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Question 1
Incorrect
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A 30-year-old man presents with worsening pain on the left side of the floor of the mouth. He has been experiencing pain intermittently for the past three weeks, especially during meals. However, the pain has escalated significantly over the last 48 hours.
During examination, his temperature is 38.2°C. There is a smooth swelling along the floor of the mouth. Intra-oral examination reveals inadequate dental hygiene and pus seeping into the floor of the mouth anteriorly.
What is the probable diagnosis?Your Answer: Dental abscess
Correct Answer: Left submandibular gland infection
Explanation:Differentiating Left Submandibular Gland Infection from Other Conditions
Left submandibular gland infection is a condition that occurs when a submandibular gland calculus obstructs the submandibular duct, leading to stasis of duct contents and infection. It is important to differentiate this condition from other similar conditions to ensure proper diagnosis and treatment.
Sialolithiasis, another condition that affects the submandibular gland, typically presents with dull pain around the gland that worsens during mealtimes or when lemon juice is squirted onto the tongue. Dental abscess, on the other hand, causes localized tooth pain without pus draining into the floor of the mouth.
Uncomplicated sialolithiasis does not present with fever and pus oozing into the floor of the mouth, which are common symptoms of left submandibular gland infection. Ludwig’s angina, a serious and potentially life-threatening infection of the soft tissues of the floor of the mouth, typically follows a dental infection and presents with marked oedema and tenderness of submandibular, sublingual, and submental spaces.
Mumps parotitis, which typically affects younger patients, presents with bilateral smooth, enlarged parotid glands and a viral-like illness. Unlike left submandibular gland infection, pus is not seen draining into the floor of the mouth.
In summary, differentiating left submandibular gland infection from other similar conditions is crucial in ensuring proper diagnosis and treatment.
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This question is part of the following fields:
- ENT
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Question 2
Incorrect
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A 28-year-old woman attends the early pregnancy assessment clinic for a scan after a previous ectopic pregnancy treated with salpingotomy. The scan reveals an empty uterus and adnexal fluid with a yolk sac, indicating another ectopic pregnancy. The patient expresses a preference for the least invasive management option. What would be a contraindication for expectant management in this case?
Your Answer: The absence of a fetal heartbeat
Correct Answer: Abdominal pain
Explanation:Expectant management of an ectopic pregnancy is only possible if the embryo is unruptured, less than 35mm in size, has no heartbeat, is asymptomatic, and has a B-hCG level of less than 1,000IU/L and is declining. However, this management option is very uncommon as most patients present with symptoms.
Ectopic pregnancy is a serious condition that requires prompt investigation and management. Women who are stable are typically investigated and managed in an early pregnancy assessment unit, while those who are unstable should be referred to the emergency department. The investigation of choice for ectopic pregnancy is a transvaginal ultrasound, which will confirm the presence of a positive pregnancy test.
There are three ways to manage ectopic pregnancies: expectant management, medical management, and surgical management. The choice of management will depend on various criteria, such as the size of the ectopic pregnancy, whether it is ruptured or not, and the patient’s symptoms and hCG levels. Expectant management involves closely monitoring the patient over 48 hours, while medical management involves giving the patient methotrexate and requires follow-up. Surgical management can involve salpingectomy or salpingotomy, depending on the patient’s risk factors for infertility.
Salpingectomy is the first-line treatment for women with no other risk factors for infertility, while salpingotomy should be considered for women with contralateral tube damage. However, around 1 in 5 women who undergo a salpingotomy require further treatment, such as methotrexate and/or a salpingectomy. It is important to carefully consider the patient’s individual circumstances and make a decision that will provide the best possible outcome.
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This question is part of the following fields:
- Reproductive Medicine
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Question 3
Correct
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A 32-year-old woman contacts the endocrinology nurse seeking advice. She has been experiencing vomiting for the past 24 hours and has been unable to take her regular medications due to this. She has a medical history of Addison's disease and usually takes oral hydrocortisone and fludrocortisone. She denies any other symptoms apart from reduced oral intake and has not experienced dizziness on standing, blackouts, or diarrhea. Her temperature has been normal. She has IM hydrocortisone available at home. What is the most appropriate advice to give regarding her hydrocortisone?
Your Answer: Advise her to take the IM hydrocortisone at home whilst vomiting
Explanation:If a person with Addison’s disease experiences vomiting and is unable to take their regular oral hydrocortisone, they should be administered IM hydrocortisone until the vomiting subsides. This is crucial to prevent an Addisonian crisis. It is recommended that all patients with Addison’s disease have access to IM hydrocortisone in case of such situations. In case of systemic involvement, hospitalization for IV fluids and IV hydrocortisone may be necessary.
Addison’s disease is a condition that requires patients to undergo both glucocorticoid and mineralocorticoid replacement therapy. This treatment usually involves taking a combination of hydrocortisone and fludrocortisone. Hydrocortisone is typically given in 2 or 3 divided doses, with patients requiring 20-30 mg per day, mostly in the first half of the day. Patient education is crucial, and it is essential to emphasize the importance of not missing glucocorticoid doses. Additionally, patients should consider wearing MedicAlert bracelets and steroid cards, and they should be provided with hydrocortisone for injection with needles and syringes to treat an adrenal crisis.
During an intercurrent illness, it is crucial to manage the glucocorticoid dose properly. In simple terms, the glucocorticoid dose should be doubled, while the fludrocortisone dose should remain the same. The Addison’s Clinical Advisory Panel has produced guidelines that detail specific scenarios, and patients should refer to these guidelines for more information. It is essential to discuss how to adjust the glucocorticoid dose during an intercurrent illness with a healthcare professional. Proper management of Addison’s disease is crucial to ensure that patients can lead healthy and fulfilling lives.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 4
Correct
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A 5-year-old girl is seen in the Paediatric Admissions Unit with a fever lasting for a week. During examination, she presents with red, painful lips and conjunctival injection. Additionally, her hands are swollen and red. Blood tests reveal the following results: Hb 13.1 g/dl, WBC 12.7 *109/l, Platelets 520 *109/l, and CRP 96 mg/L. What is the probable diagnosis?
Your Answer: Kawasaki disease
Explanation:Understanding Kawasaki Disease
Kawasaki disease is a rare type of vasculitis that primarily affects children. It is important to identify this disease early on as it can lead to serious complications, such as coronary artery aneurysms. The disease is characterized by a high-grade fever that lasts for more than five days and is resistant to antipyretics. Other symptoms include conjunctival injection, bright red, cracked lips, strawberry tongue, cervical lymphadenopathy, and red palms and soles that later peel.
Diagnosis of Kawasaki disease is based on clinical presentation as there is no specific diagnostic test available. Management of the disease involves high-dose aspirin, which is one of the few indications for aspirin use in children. Intravenous immunoglobulin is also used as a treatment option. Echocardiogram is the initial screening test for coronary artery aneurysms, rather than angiography.
Complications of Kawasaki disease can be serious, with coronary artery aneurysm being the most common. It is important to recognize the symptoms of Kawasaki disease early on and seek medical attention promptly to prevent potential complications.
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This question is part of the following fields:
- Paediatrics
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Question 5
Incorrect
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A 32-year-old woman presents to her General Practitioner with a 4-day history of abdominal cramps and watery diarrhoea. Her symptoms started two days after she ate a salad from a restaurant.
Which of the following is the most likely causative organism?Your Answer: Staphylococcus aureus
Correct Answer: Campylobacter jejuni
Explanation:Campylobacter jejuni is a prevalent cause of bacterial food poisoning in the UK, typically transmitted through contaminated food or drink. Symptoms usually appear 2-5 days after exposure and may include abdominal cramps, diarrhea (which may or may not be bloody), nausea, vomiting, and fever. While symptoms are usually mild and self-limiting, severe cases or immunocompromised patients may require antibiotic treatment. Bacillus cereus and Clostridium perfringens are less likely causes of food poisoning due to their short incubation periods and milder symptoms. Rotavirus is a common cause of viral gastroenteritis in children, but adults are rarely affected due to immunity. Staphylococcus aureus can also cause food poisoning, with symptoms appearing 2-6 hours after ingestion and including nausea, vomiting, and abdominal pain.
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This question is part of the following fields:
- Infectious Diseases
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Question 6
Correct
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A 50-year-old woman, who is currently four weeks into a course of postoperative radiotherapy for locally advanced cervical carcinoma, is admitted with abdominal pain and diarrhoea.
Which of the following is the most likely cause of the clinical picture?Your Answer: Radiation enteritis
Explanation:Understanding Radiation Enteritis and Other Possible Causes of Bowel Symptoms
Radiation enteritis is a condition that occurs when the bowel becomes inflamed due to radiation therapy. It can manifest as ileitis, colitis, or proctitis, and can be acute or chronic. Acute radiation enteritis typically occurs during therapy and presents with symptoms such as anorexia, diarrhoea, and abdominal pain. Chronic radiation enteritis, on the other hand, can develop months or years after treatment and may cause weight loss, steatorrhoea, and small bowel obstruction.
While radiation enteritis is a likely cause of bowel symptoms in patients who have undergone radiation therapy, other conditions should also be considered. Bowel obstruction, for example, can cause nausea, vomiting, and bloating, but does not typically cause diarrhoea. Local malignant infiltration to the bowel may present with obstruction, while bowel perforation is a medical emergency that causes peritonitis and sepsis.
In summary, understanding the possible causes of bowel symptoms is important in determining the appropriate treatment for patients. While radiation enteritis is a common consequence of radiation therapy, other conditions such as bowel obstruction, local malignant infiltration, and bowel perforation should also be considered.
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This question is part of the following fields:
- Haematology/Oncology
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Question 7
Correct
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A 65-year-old man is referred by his general practitioner for advice regarding optimisation of secondary prevention. He has a history of non-ST-elevation myocardial infarction (NSTEMI) two years ago. He is on a combination of clopidogrel, atenolol 50 mg once daily and atorvastatin 80 mg once daily. He also has diabetes for which he takes metformin 1 g twice daily. His pulse rate is 70 bpm, and blood pressure 144/86 mmHg. His past medical history includes an ischaemic stroke two years ago, from which he made a complete recovery.
What additional therapy would you consider?
Select the SINGLE most appropriate option from the list below. Select ONE option only.Your Answer: Perindopril
Explanation:The Importance of ACE Inhibitors in Post-MI Patients with Vascular Disease and Diabetes
Following a myocardial infarction (MI), the National Institute for Health and Care Excellence (NICE) recommends the use of angiotensin-converting enzyme (ACE) inhibitors for all patients, regardless of left ventricular function. This is based on evidence from trials such as PROGRESS and HOPE, which demonstrate the benefits of ACE inhibitors in patients with vascular disease. Additionally, for patients with diabetes, the use of ACE inhibitors is preferable. The benefits of ACE inhibition are not solely related to blood pressure reduction, but also include favorable local vascular and myocardial effects. Calcium channel blockers, such as amlodipine and diltiazem, are not recommended for post-MI patients with systolic dysfunction. Nicorandil should also be avoided. Clopidogrel is the preferred antiplatelet for patients with clinical vascular disease who have had an MI and a stroke. Blood pressure should be optimized in post-MI patients, and further antihypertensive therapy may be necessary, including the addition of an ACE inhibitor to achieve the desired level.
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This question is part of the following fields:
- Cardiovascular
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Question 8
Incorrect
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A 72-year-old man presents to the Haematology Clinic with symptoms of bone pain and anaemia. The medical team suspects multiple myeloma (MM) and orders a set of blood tests, including a full blood count, urea, serum creatinine and electrolytes, serum calcium, albumin, serum protein electrophoresis, serum-free light-chain assay, and serum beta-2 microglobulin. The team also plans to perform an imaging investigation to look for osteolytic lesions. What initial scan should be ordered?
Your Answer: Skeletal survey (X-ray)
Correct Answer: Whole-body low-dose CT (WBLD-CT)
Explanation:When investigating suspected multiple myeloma (MM), it is crucial to use whole-body low-dose CT (WBLD-CT) imaging. This method is more effective than traditional radiology in detecting lytic lesions and should be the first option if available. Lesions with a diameter of 5mm or more are considered positive. If WBLD-CT and MRI fail to show lesions with a strong clinical indication, an FDG-PET or FDG-PET-CT can be used to detect bone lesions. During treatment follow-up, an FDG-PET-CT can detect active lesions and provide prognostic information. While a skeletal survey (X-ray) is less sensitive than WBLD-CT, it can still be useful. If suspicion remains high for MM despite negative WBLD-CT or skeletal survey results, a whole-body MRI should be performed. This method can detect focal lesions and bone marrow infiltration and may also be of prognostic value in asymptomatic patients. The presence of focal lesions is a strong predictor of progression to symptomatic MM.
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This question is part of the following fields:
- Haematology/Oncology
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Question 9
Correct
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A 28-year-old woman who is 20 weeks pregnant visits the GP clinic to inquire about the whooping cough vaccine. She mentions that her friend, who also sees the same GP, received the vaccine at 32 weeks of pregnancy. She wants to know if she can get the vaccine at this stage of her pregnancy.
Your Answer: She can have the vaccine now
Explanation:Pregnant women at 16-32 weeks are given the option to receive the pertussis vaccine.
Whooping Cough: Causes, Symptoms, Diagnosis, and Management
Whooping cough, also known as pertussis, is a contagious disease caused by the bacterium Bordetella pertussis. It is commonly found in children, with around 1,000 cases reported annually in the UK. The disease is characterized by a persistent cough that can last up to 100 days, hence the name cough of 100 days.
Infants are particularly vulnerable to whooping cough, which is why routine immunization is recommended at 2, 3, 4 months, and 3-5 years. However, neither infection nor immunization provides lifelong protection, and adolescents and adults may still develop the disease.
Whooping cough has three phases: the catarrhal phase, the paroxysmal phase, and the convalescent phase. The catarrhal phase lasts around 1-2 weeks and presents symptoms similar to a viral upper respiratory tract infection. The paroxysmal phase is characterized by a severe cough that worsens at night and after feeding, and may be accompanied by vomiting and central cyanosis. The convalescent phase is when the cough subsides over weeks to months.
To diagnose whooping cough, a person must have an acute cough that has lasted for 14 days or more without another apparent cause, and have one or more of the following features: paroxysmal cough, inspiratory whoop, post-tussive vomiting, or undiagnosed apnoeic attacks in young infants. A nasal swab culture for Bordetella pertussis is used to confirm the diagnosis, although PCR and serology are increasingly used.
Infants under 6 months with suspected pertussis should be admitted, and in the UK, pertussis is a notifiable disease. An oral macrolide, such as clarithromycin, azithromycin, or erythromycin, is indicated if the onset of the cough is within the previous 21 days to eradicate the organism and reduce the spread. Household contacts should be offered antibiotic prophylaxis, although antibiotic therapy has not been shown to alter the course of the illness. School exclusion is recommended for 48 hours after commencing antibiotics or 21 days from onset of symptoms if no antibiotics are given.
Complications of whooping cough include subconjunctival haemorrhage, pneumonia, bronchiectasis, and
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This question is part of the following fields:
- Paediatrics
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Question 10
Incorrect
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A 78-year-old man comes to the clinic complaining of a swollen left upper eyelid that has been bothering him for the past 3 months. He recalls noticing a bump on the eyelid that was uncomfortable at first, but it gradually grew into a hard lump. He denies any pain at present and has not experienced any vision problems. Upon examination, the eye appears to be in good health. What is the probable diagnosis?
Your Answer: Hordeolum externa
Correct Answer: Chalazion
Explanation:A painless, firm lump in the eyelid is indicative of a chalazion or Meibomian cyst. This occurs when the Meibomian gland becomes blocked, resulting in the formation of a cyst. It is often a consequence of an internal stye (hordeolum internum). Although cysts may resolve on their own, they may require topical antibiotics if they become infected. The absence of pain and the prolonged history suggest that it is not an internal or external stye. Blepharitis and ectropion are unlikely to cause a lump in the eyelid.
Eyelid problems are quite common and can include a variety of issues. One such issue is blepharitis, which is inflammation of the eyelid margins that can cause redness in the eye. Another problem is a stye, which is an infection of the glands in the eyelids. Chalazion, also known as Meibomian cyst, is another eyelid problem that can occur. Entropion is when the eyelids turn inward, while ectropion is when they turn outward.
Styes can come in different forms, such as external or internal. An external stye is an infection of the glands that produce sebum or sweat, while an internal stye is an infection of the Meibomian glands. Treatment for styes typically involves hot compresses and pain relief, with topical antibiotics only being recommended if there is also conjunctivitis present. A chalazion, on the other hand, is a painless lump that can form in the eyelid due to a retention cyst of the Meibomian gland. While most cases will resolve on their own, some may require surgical drainage.
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This question is part of the following fields:
- Ophthalmology
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Question 11
Incorrect
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A 56-year-old woman with a history of rheumatoid arthritis complains of bloody diarrhoea, accompanied by fever and abdominal pain for the past week. She is on methotrexate for her rheumatoid arthritis, which is usually well-controlled. Upon testing her stool sample, Campylobacter jejuni is detected. What is the best course of action for treatment?
Your Answer: Fluids + ciprofloxacin
Correct Answer: Fluids + clarithromycin
Explanation:Campylobacter: The Most Common Bacterial Cause of Intestinal Disease in the UK
Campylobacter is a Gram-negative bacillus that is responsible for causing infectious intestinal disease in the UK. The bacteria is primarily spread through the faecal-oral route and has an incubation period of 1-6 days. Symptoms of Campylobacter infection include a prodrome of headache and malaise, diarrhoea (often bloody), and abdominal pain that may mimic appendicitis.
In most cases, Campylobacter infection is self-limiting and does not require treatment. However, the British National Formulary (BNF) recommends treatment with antibiotics if the patient is immunocompromised or if symptoms are severe (high fever, bloody diarrhoea, or more than eight stools per day) and have lasted for more than one week. The first-line antibiotic for Campylobacter infection is clarithromycin, although ciprofloxacin is an alternative. It is important to note that strains with decreased sensitivity to ciprofloxacin are frequently isolated.
Complications of Campylobacter infection may include Guillain-Barre syndrome, reactive arthritis, septicaemia, endocarditis, and arthritis. It is important to seek medical attention if symptoms are severe or persist for an extended period of time.
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This question is part of the following fields:
- Infectious Diseases
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Question 12
Correct
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A 68-year-old man presents with complaints of weight loss and fatigue that have been ongoing for several months. Upon examination, the only notable finding is pallor. A blood film reveals the presence of immature blasts, and genetic testing shows the presence of a chromosomal translocation t(9;22) - the Philadelphia chromosome. Further investigations reveal the following results: Hb of 95 g/l (normal range: 135-175 g/l), leukocytes of 62 × 109/l (normal range: 4.0-11.0 × 109/l), and PLT of 101 × 109/l (normal range: 150-400 × 109/l). What is the most likely diagnosis?
Your Answer: Chronic myeloid leukaemia (CML)
Explanation:Chronic myeloid leukaemia (CML) is a rare form of cancer that occurs due to the abnormal growth of myeloid precursors or blasts. This leads to an increase in white blood cells and a decrease in the normal functions of the bone marrow, resulting in anaemia and thrombocytopenia. CML is most commonly seen in people between the ages of 60 and 70 and has a slow onset that can last for months or even years. The majority of cases are caused by a genetic mutation called the Philadelphia chromosome, which produces a protein that promotes the growth of cancer cells. Symptoms of CML include fatigue, weight loss, night sweats, abdominal distension, and left upper quadrant pain. Treatment for CML involves inhibiting the genetic mutation with a drug called imatinib.
Acute lymphocytic leukaemia (ALL) is a type of cancer that occurs due to the abnormal growth of immature lymphocytes, which replace the normal cells of the bone marrow and lead to a decrease in blood cell production. ALL is most commonly seen in children and presents with symptoms such as anaemia, fever, and abdominal pain. Diagnosis is made through bone marrow biopsy and genetic analysis, which can reveal chromosomal abnormalities associated with the disease.
Hodgkin’s lymphoma (HL) is a type of cancer that typically presents with enlarged lymph nodes and is associated with the presence of Reed-Sternberg cells, which are abnormal B cells. Multiple myeloma (MM) is a cancer that affects plasma cells in the bone marrow, leading to a decrease in blood cell production and other symptoms such as hypercalcemia and kidney dysfunction. Non-Hodgkin’s lymphoma (NHL) is a type of cancer that arises from the abnormal growth of B cells, T cells, or natural killer cells and can be caused by genetic mutations, infections, or chronic inflammation. Symptoms of NHL include enlarged lymph nodes throughout the body.
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This question is part of the following fields:
- Haematology/Oncology
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Question 13
Correct
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A 30-year-old woman presents with a swollen first finger and wrist pain associated with a 5 month history of generalised fatigue. She has no other symptoms including no skin changes, and no previous medical history. Her mother suffers from psoriasis. She had the following blood tests as part of her investigations.
Hb 125 g/l
Platelets 390 * 109/l
WBC 9.5 * 109/l
ESR 78 mm/h
Rheumatoid Factor Negative
Antinuclear Antibody Negative
What is the most probable diagnosis?Your Answer: Psoriatic arthritis
Explanation:Although females in this age group can be affected by SLE and rheumatoid arthritis, the most probable diagnosis for this patient is psoriatic arthritis due to the presence of dactylitis and a first-degree relative with psoriasis. Furthermore, rheumatoid factor and antinucleur antibody are typically positive in rheumatoid arthritis, while antinucleur antibody is mainly positive in SLE. Gout usually targets the first metatarsophalangeal joint of the first toe.
Psoriatic arthropathy is a type of inflammatory arthritis that is associated with psoriasis. It is classified as one of the seronegative spondyloarthropathies and is known to have a poor correlation with cutaneous psoriasis. In fact, it often precedes the development of skin lesions. This condition affects both males and females equally, with around 10-20% of patients with skin lesions developing an arthropathy.
The presentation of psoriatic arthropathy can vary, with different patterns of joint involvement. The most common type is symmetric polyarthritis, which is very similar to rheumatoid arthritis and affects around 30-40% of cases. Asymmetrical oligoarthritis is another type, which typically affects the hands and feet and accounts for 20-30% of cases. Sacroiliitis, DIP joint disease, and arthritis mutilans (severe deformity of fingers/hand) are other patterns of joint involvement. Other signs of psoriatic arthropathy include psoriatic skin lesions, periarticular disease, enthesitis, tenosynovitis, dactylitis, and nail changes.
To diagnose psoriatic arthropathy, X-rays are often used. These can reveal erosive changes and new bone formation, as well as periostitis and a pencil-in-cup appearance. Management of this condition should be done by a rheumatologist, and treatment is similar to that of rheumatoid arthritis. However, there are some differences, such as the use of monoclonal antibodies like ustekinumab and secukinumab. Mild peripheral arthritis or mild axial disease may be treated with NSAIDs alone, rather than all patients being on disease-modifying therapy as with RA. Overall, psoriatic arthropathy has a better prognosis than RA.
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This question is part of the following fields:
- Musculoskeletal
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Question 14
Correct
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A 65-year-old woman has a significant anterior non-ST-elevation myocardial infarction (MI) but recovers well in hospital. Her predischarge echocardiogram shows her to have an ejection fraction of 40%. She is otherwise asymptomatic.
Which of the following should her medications on discharge include?
Your Answer: Aspirin, ticagrelor, bisoprolol, ramipril and a statin
Explanation:Medication Options for Post-Myocardial Infarction Patients
After a myocardial infarction (MI), it is important for patients to receive appropriate medication to prevent further cardiovascular events. The National Institute for Health and Care Excellence (NICE) guidelines recommend the use of aspirin, ticagrelor, bisoprolol, ramipril, and a statin for dual antiplatelet therapy, β-blocker, ACE inhibitor, and cholesterol-lowering medication. The β-blocker and ACE inhibitor should be increased to the maximum tolerated dose.
While isosorbide mononitrate (ISMN) is a useful anti-anginal medication, it is not indicated for post-MI patients. Instead, aspirin, bisoprolol, ramipril, losartan, and a statin may be prescribed. However, the use of an ACE inhibitor alongside an angiotensin receptor blocker (ARB) is not recommended due to their similar mechanism of action. Nitrates, such as ISMN, are also used as anti-anginals, but ACE inhibitors are preferred over ARBs.
For patients on aspirin, bisoprolol, ramipril, and a statin, a second antiplatelet medication, such as clopidogrel, may be added for the first 12 months following an MI, unless there is a contraindication such as concomitant use of warfarin. It is important for healthcare providers to carefully consider the appropriate medication regimen for each post-MI patient to optimize their cardiovascular health.
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This question is part of the following fields:
- Cardiovascular
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Question 15
Correct
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A 57-year-old man presents with papilloedema during examination. What could be the possible cause?
Your Answer: Hypercapnia
Explanation:In emergency situations, inducing hypocapnia through hyperventilation may be employed as a means to decrease intracranial pressure.
Understanding Papilloedema: Optic Disc Swelling Caused by Increased Intracranial Pressure
Papilloedema is a condition characterized by swelling of the optic disc due to increased pressure within the skull. This condition is typically bilateral and can be identified through fundoscopy. During this examination, venous engorgement is usually the first sign observed, followed by loss of venous pulsation, blurring of the optic disc margin, elevation of the optic disc, loss of the optic cup, and the presence of Paton’s lines, which are concentric or radial retinal lines cascading from the optic disc.
There are several potential causes of papilloedema, including space-occupying lesions such as tumors or vascular abnormalities, malignant hypertension, idiopathic intracranial hypertension, hydrocephalus, and hypercapnia. In rare cases, papilloedema may also be caused by hypoparathyroidism and hypocalcaemia, or vitamin A toxicity.
Overall, understanding papilloedema is important for identifying potential underlying conditions and providing appropriate treatment to prevent further complications.
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This question is part of the following fields:
- Ophthalmology
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Question 16
Correct
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A 45-year-old male dental practice nurse is admitted for elective surgery. During induction with a general anaesthetic, he develops tachycardia, rash and diffuse wheeze. He mentioned that he had a rash when assisting with an anaesthetic case at work.
Which of the following is the most likely diagnosis?
Select the SINGLE most likely diagnosis from the list below. Select ONE option only.Your Answer: Anaphylaxis
Explanation:Understanding Allergic Reactions: Types and Symptoms
Allergic reactions can take many forms, each with its own set of symptoms and causes. Anaphylaxis is a severe and potentially life-threatening reaction that can occur in response to drugs, insect stings, or certain foods. It is characterized by rapid onset of airway, breathing, and circulation problems, as well as skin and mucosal changes. Systemic mastocytosis is another type of allergic reaction that can cause symptoms such as itching, abdominal cramping, and even shock. Pseudoallergy, on the other hand, can mimic true allergies but has different underlying causes, such as altered histamine metabolism or food intolerance.
Serum sickness is a self-limited allergic reaction that occurs after exposure to foreign proteins. It is a type III hypersensitivity reaction that can cause fever, skin rash, and joint symptoms. Contact dermatitis is an inflammatory skin reaction that can be caused by either an irritant or an allergen. Allergic contact dermatitis is a type IV delayed hypersensitivity reaction that occurs after sensitization and subsequent re-exposure to an allergen, while irritant contact dermatitis is an inflammatory response that occurs after damage to the skin by chemicals.
It is important to recognize the symptoms of these different types of allergic reactions and seek medical attention if necessary. Anaphylaxis, in particular, is a medical emergency that can lead to death if not treated promptly. By understanding the different types of allergic reactions and their causes, we can take steps to prevent them and manage their symptoms effectively.
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This question is part of the following fields:
- Immunology/Allergy
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Question 17
Correct
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A 25-year-old woman presents for her yearly asthma check-up. She reports experiencing her typical symptoms of chest tightness, wheezing, and shortness of breath about three times per week, usually at night. She also wakes up feeling wheezy once a week. At present, she only uses a salbutamol inhaler as needed, which provides her with good relief. The patient has no medical history, takes no other medications, and has no allergies. What is the appropriate management plan for this patient?
Your Answer: Add a budesonide inhaler
Explanation:According to NICE (2017) guidelines, patients with asthma should be prescribed a SABA as the first step of treatment. However, if a patient experiences symptoms three or more times per week or night waking, they should also be prescribed a low-dose ICS inhaler as the second step of treatment. This is also necessary for patients who have had an acute exacerbation requiring oral corticosteroids in the past two years. In this case, the patient’s symptoms are not well-controlled with a SABA alone, and she experiences frequent symptoms and night waking. Therefore, she requires a low-dose ICS inhaler, and the only option available is budesonide.
Adding a salmeterol inhaler is not appropriate at this stage, as LABAs are only used as the fourth step of treatment if a patient is not controlled with a SABA, low-dose ICS, and a trial of LTRAs. Similarly, adding montelukast and a beclomethasone inhaler is not appropriate, as LTRAs are only added if a patient is still not controlled on a low-dose ICS and a SABA. However, it may be appropriate to trial beclomethasone without montelukast.
Continuing with the current salbutamol-only treatment is not appropriate, as the patient’s asthma is poorly controlled, which increases the risk of morbidity and mortality. Regular salbutamol has no role in the management of asthma, as it does not improve outcomes and may even worsen them by downregulating beta receptors that are important for bronchodilation.
The management of asthma in adults has been updated by NICE in 2017, following the 2016 BTS guidelines. One of the significant changes is in ‘step 3’, where patients on a SABA + ICS whose asthma is not well controlled should be offered a leukotriene receptor antagonist instead of a LABA. NICE does not follow the stepwise approach of the previous BTS guidelines, but to make the guidelines easier to follow, we have added our own steps. The steps range from newly-diagnosed asthma to SABA +/- LTRA + one of the following options, including increasing ICS to high-dose, a trial of an additional drug, or seeking advice from a healthcare professional with expertise in asthma. Maintenance and reliever therapy (MART) is a form of combined ICS and LABA treatment that is only available for ICS and LABA combinations in which the LABA has a fast-acting component. It should be noted that NICE does not recommend changing treatment in patients who have well-controlled asthma simply to adhere to the latest guidance. The definitions of what constitutes a low, moderate, or high-dose ICS have also changed, with <= 400 micrograms budesonide or equivalent being a low dose, 400 micrograms - 800 micrograms budesonide or equivalent being a moderate dose, and > 800 micrograms budesonide or equivalent being a high dose for adults.
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This question is part of the following fields:
- Respiratory Medicine
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Question 18
Correct
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A 32-year-old male presents with vomiting and central abdominal pain that radiates to the back. The following laboratory result is obtained:
Amylase 1,245 u/dl. Which medication is the most probable cause of these symptoms?Your Answer: Sodium valproate
Explanation:Acute pancreatitis is a condition that is mainly caused by gallstones and alcohol in the UK. A popular mnemonic to remember the causes is GET SMASHED, which stands for gallstones, ethanol, trauma, steroids, mumps, autoimmune diseases, scorpion venom, hypertriglyceridaemia, hyperchylomicronaemia, hypercalcaemia, hypothermia, ERCP, and certain drugs. CT scans of patients with acute pancreatitis show diffuse parenchymal enlargement with oedema and indistinct margins. It is important to note that pancreatitis is seven times more common in patients taking mesalazine than sulfasalazine.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 19
Incorrect
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You are summoned to the examination room of a pediatric clinic as a 15-month-old girl has developed a rash and difficulty breathing after receiving a routine vaccination. Upon assessment, she is exhibiting swelling in the mouth and neck area. What is the best initial course of action?
Your Answer: IM adrenaline 300 mcg (0.3ml of 1 in 1,000)
Correct Answer: IM adrenaline 150 mcg (0.15ml of 1 in 1,000)
Explanation:For children between 6 months and 6 years old, the recommended dose of adrenaline for anaphylaxis is 150 mcg (0.15ml of 1 in 1,000 solution).
Anaphylaxis is a severe and potentially life-threatening allergic reaction that affects the entire body. It can be caused by various triggers, including food, drugs, and insect venom. The symptoms of anaphylaxis typically occur suddenly and progress rapidly, affecting the airway, breathing, and circulation. Common signs include swelling of the throat and tongue, hoarse voice, respiratory wheeze, dyspnea, hypotension, and tachycardia. In addition, around 80-90% of patients experience skin and mucosal changes, such as generalized pruritus, erythematous rash, or urticaria.
The management of anaphylaxis requires prompt and decisive action, as it is a medical emergency. The Resuscitation Council guidelines recommend intramuscular adrenaline as the most important drug for treating anaphylaxis. The recommended doses of adrenaline vary depending on the patient’s age, ranging from 100-150 micrograms for infants under 6 months to 500 micrograms for adults and children over 12 years. Adrenaline can be repeated every 5 minutes if necessary, and the best site for injection is the anterolateral aspect of the middle third of the thigh. In cases of refractory anaphylaxis, IV fluids and expert help should be sought.
Following stabilisation, patients may be given non-sedating oral antihistamines to manage persisting skin symptoms. It is important to refer all patients with a new diagnosis of anaphylaxis to a specialist allergy clinic and provide them with an adrenaline injector as an interim measure before the specialist assessment. Patients should also be prescribed two adrenaline auto-injectors and trained on how to use them. A risk-stratified approach to discharge should be taken, as biphasic reactions can occur in up to 20% of patients. The Resus Council UK recommends a fast-track discharge for patients who have had a good response to a single dose of adrenaline and complete resolution of symptoms, while those who require two doses of IM adrenaline or have a history of biphasic reaction should be observed for at least 12 hours following symptom resolution.
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This question is part of the following fields:
- Immunology/Allergy
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Question 20
Correct
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A woman who is 32 weeks pregnant has been diagnosed with syphilis during her routine booking visit bloods. What is the best course of action for management?
Your Answer: IM benzathine penicillin G
Explanation:Management of Syphilis
Syphilis can be effectively managed with intramuscular benzathine penicillin as the first-line treatment. In cases where penicillin cannot be used, doxycycline may be used as an alternative. After treatment, nontreponemal titres such as rapid plasma reagin (RPR) or Venereal Disease Research Laboratory (VDRL) should be monitored to assess the response. A fourfold decline in titres is often considered an adequate response to treatment.
It is important to note that the Jarisch-Herxheimer reaction may occur following treatment. This reaction is characterized by fever, rash, and tachycardia after the first dose of antibiotic. Unlike anaphylaxis, there is no wheezing or hypotension. The reaction is thought to be due to the release of endotoxins following bacterial death and typically occurs within a few hours of treatment. However, no treatment is needed other than antipyretics if required.
In summary, the management of syphilis involves the use of intramuscular benzathine penicillin or doxycycline as an alternative. Nontreponemal titres should be monitored after treatment, and the Jarisch-Herxheimer reaction may occur but does not require treatment unless symptomatic.
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This question is part of the following fields:
- Reproductive Medicine
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Question 21
Incorrect
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A 45-year-old woman visits her primary care physician (PCP) complaining of bilateral tinnitus. She denies any changes in her hearing or other ear-related symptoms. The PCP conducts ear and cranial nerve examinations, which reveal no abnormalities. The patient's medication list is reviewed.
Which ONE medication from the following list is most likely responsible for the patient's tinnitus?Your Answer: Nifedipine
Correct Answer: Quinine
Explanation:Medication and Tinnitus: Understanding the Association
Tinnitus, the perception of sounds in the ears or head without an external source, can be distressing and may indicate an underlying condition. While it is often considered a minor symptom, certain medications have been associated with tinnitus. Quinine, commonly used to treat malaria, is one such medication. Other medications that may cause tinnitus include aspirin, aminoglycosides, loop diuretics, and non-steroidal anti-inflammatory drugs. However, medications like spironolactone, salbutamol, metformin, and nifedipine are not associated with tinnitus. It is important to understand the potential side effects of medications and to consult with a healthcare provider if experiencing tinnitus or any other concerning symptoms.
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This question is part of the following fields:
- ENT
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Question 22
Correct
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A 14-year-old female complains of persistent pain in her left knee. The pain usually occurs after running and is accompanied by occasional swelling and joint locking. What is the probable diagnosis?
Your Answer: Osteochondritis dissecans
Explanation:Common Knee Problems in Children and Young Adults
Knee problems are common in children and young adults, especially those who are active in sports.
Chondromalacia patellae is a condition that is more common in teenage girls. It is characterized by the softening of the cartilage of the patella, which can cause anterior knee pain when walking up and down stairs or rising from prolonged sitting. This condition usually responds well to physiotherapy.Osgood-Schlatter disease, also known as tibial apophysitis, is often seen in sporty teenagers. It causes pain, tenderness, and swelling over the tibial tubercle.
Osteochondritis dissecans can cause pain after exercise, as well as intermittent swelling and locking of the knee.
Patellar subluxation can cause medial knee pain due to lateral subluxation of the patella. The knee may also give way.
Patellar tendonitis is more common in athletic teenage boys. It causes chronic anterior knee pain that worsens after running. On examination, the area below the patella is tender. It is important to note that referred pain may come from hip problems such as slipped upper femoral epiphysis.
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This question is part of the following fields:
- Paediatrics
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Question 23
Correct
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A 60-year-old man comes in with complaints of nocturia, hesitancy, and terminal dribbling. During prostate examination, a moderately enlarged prostate with no irregular features and a well-defined median sulcus is found. Blood tests reveal a PSA level of 1.3 ng/ml.
What is the best course of action for management?Your Answer: Alpha-1 antagonist
Explanation:First-line treatment for benign prostatic hyperplasia involves the use of alpha-1 antagonists.
Benign prostatic hyperplasia (BPH) is a common condition that affects older men, with around 50% of 50-year-old men showing evidence of BPH and 30% experiencing symptoms. The risk of BPH increases with age, with around 80% of 80-year-old men having evidence of the condition. BPH typically presents with lower urinary tract symptoms (LUTS), which can be categorised into voiding symptoms (obstructive) and storage symptoms (irritative). Complications of BPH can include urinary tract infections, retention, and obstructive uropathy.
Assessment of BPH may involve dipstick urine tests, U&Es, and PSA tests. A urinary frequency-volume chart and the International Prostate Symptom Score (IPSS) can also be used to assess the severity of LUTS and their impact on quality of life. Management options for BPH include watchful waiting, alpha-1 antagonists, 5 alpha-reductase inhibitors, combination therapy, and surgery. Alpha-1 antagonists are considered first-line treatment for moderate-to-severe voiding symptoms, while 5 alpha-reductase inhibitors may be indicated for patients with significantly enlarged prostates and a high risk of progression. Combination therapy and antimuscarinic drugs may also be used in certain cases. Surgery, such as transurethral resection of the prostate (TURP), may be necessary in severe cases.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 24
Correct
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A 47-year-old man presents to the clinic with concerns about his risk of coronary heart disease after a friend recently had a heart attack. He has a history of anxiety but is not currently taking any medication. He is a smoker, consuming around 20 cigarettes a day. On examination, his cardiovascular system appears normal, with a BMI of 26 kg/m² and blood pressure of 126/82 mmHg.
As his healthcare provider, you strongly advise him to quit smoking. What would be the most appropriate next step?Your Answer: Arrange a lipid profile then calculate his QRISK2 score
Explanation:The 2014 NICE guidelines recommend using the QRISK2 tool to identify patients over 40 years old who are at high risk of CVD, with a 10-year risk of 10% or greater. A full lipid profile should be checked before starting a statin, and atorvastatin 20mg should be offered first-line. Lifestyle modifications include a cardioprotective diet, physical activity, weight management, limiting alcohol intake, and smoking cessation. Follow-up should occur at 3 months, with consideration of increasing the dose of atorvastatin up to 80 mg if necessary.
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This question is part of the following fields:
- Cardiovascular
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Question 25
Correct
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An 80-year-old male visits his GP complaining of new visual symptoms. He is having difficulty reading the newspaper, particularly at night, and his symptoms appear to be fluctuating in severity. Upon fundoscopy, the doctor observes small deposits of extracellular material between Bruch's membrane and the retinal pigment epithelium, but otherwise the examination is unremarkable. The patient has a history of lifelong smoking. What is the most probable diagnosis?
Your Answer: Dry age-related macular degeneration
Explanation:Dry macular degeneration is also known as drusen. This condition is characterized by a gradual loss of central vision, which can fluctuate and worsen over time. Symptoms may include difficulty seeing in low light conditions and distorted or blurry vision. There are two forms of macular degeneration: dry and wet.
Age-related macular degeneration (ARMD) is a common cause of blindness in the UK, characterized by the degeneration of the central retina (macula) and the formation of drusen. It is more prevalent in females and is strongly associated with advancing age, smoking, family history, and conditions that increase the risk of ischaemic cardiovascular disease. ARMD can be classified into two forms: dry and wet. Dry ARMD is more common and is characterized by drusen, while wet ARMD is characterized by choroidal neovascularisation and carries a worse prognosis. Clinical features of ARMD include subacute onset of visual loss, difficulties in dark adaptation, and visual disturbances such as photopsia and glare.
To diagnose ARMD, slit-lamp microscopy and color fundus photography are used to identify any pigmentary, exudative, or haemorrhagic changes affecting the retina. Fluorescein angiography and indocyanine green angiography may also be used to visualize changes in the choroidal circulation. Treatment for dry ARMD involves a combination of zinc with anti-oxidant vitamins A, C, and E, which has been shown to reduce disease progression by around one third. For wet ARMD, anti-VEGF agents such as ranibizumab, bevacizumab, and pegaptanib are used to limit disease progression and stabilize or reverse visual loss. Laser photocoagulation may also be used to slow progression, but anti-VEGF therapies are usually preferred due to the risk of acute visual loss after treatment.
In summary, ARMD is a common cause of blindness in the UK that is strongly associated with advancing age, smoking, and family history. It can be classified into dry and wet forms, with wet ARMD carrying a worse prognosis. Diagnosis involves the use of various imaging techniques, and treatment options include a combination of zinc and anti-oxidant vitamins for dry ARMD and anti-VEGF agents or laser photocoagulation for wet ARMD.
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This question is part of the following fields:
- Ophthalmology
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Question 26
Correct
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Sarah is a 44-year-old hairdresser who contacts her GP due to a 2-day history of cough and fever. Her Covid-19 test is negative and she does not sound breathless on the phone. Sarah has been taking paracetamol regularly but despite this, she is still feeling feverish; she has recorded her temperature as 37.8ºC. She has a past medical history of eczema, gilbert's syndrome and adrenal insufficiency. She takes hydrocortisone 15 mg in the morning and 10mg at lunchtime, and also takes fludrocortisone 200 micrograms once a day.
What is the most appropriate management plan for Sarah?Your Answer: Double the dose of his hydrocortisone
Explanation:To manage an Addison’s patient with an intercurrent illness, it is recommended to double the dose of their glucocorticoids, specifically hydrocortisone, while keeping the fludrocortisone dose the same. This is because the patient’s fever >37.5 indicates a moderate intercurrent illness. Continuing paracetamol regularly is not the main priority in this situation. Advising the patient to call 999 for admission is unnecessary unless there are severe symptoms such as vomiting or persistent diarrhea. Doubling the dose of fludrocortisone is not recommended as it is a mineralocorticoid with weak glucocorticoid activity, and increasing the glucocorticoid is necessary to mimic a stress response.
Addison’s disease is a condition that requires patients to undergo both glucocorticoid and mineralocorticoid replacement therapy. This treatment usually involves taking a combination of hydrocortisone and fludrocortisone. Hydrocortisone is typically given in 2 or 3 divided doses, with patients requiring 20-30 mg per day, mostly in the first half of the day. Patient education is crucial, and it is essential to emphasize the importance of not missing glucocorticoid doses. Additionally, patients should consider wearing MedicAlert bracelets and steroid cards, and they should be provided with hydrocortisone for injection with needles and syringes to treat an adrenal crisis.
During an intercurrent illness, it is crucial to manage the glucocorticoid dose properly. In simple terms, the glucocorticoid dose should be doubled, while the fludrocortisone dose should remain the same. The Addison’s Clinical Advisory Panel has produced guidelines that detail specific scenarios, and patients should refer to these guidelines for more information. It is essential to discuss how to adjust the glucocorticoid dose during an intercurrent illness with a healthcare professional. Proper management of Addison’s disease is crucial to ensure that patients can lead healthy and fulfilling lives.
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This question is part of the following fields:
- Infectious Diseases
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Question 27
Correct
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A 29-year-old man presents to the emergency department with a 3-day history of fever, fatigue, and a tingling sensation in the lateral aspect of his left thigh. The tingling was initially tolerable but has become increasingly painful over the past 24 hours. Upon examination, the area described is erythematous with a macular rash appearing. The patient has a history of HIV and is currently taking antiretroviral therapy with an undetectable viral load. He denies any cough, coryzal symptoms, focal neurological signs, or trauma to the site.
What is the appropriate management for this patient, given the likely diagnosis? Choose from the options provided.Your Answer: Aciclovir
Explanation:Patients suspected of having shingles should receive antiviral treatment within 72 hours of symptom onset, as this can help reduce the risk of post-herpetic complications. In the case of this patient, who is experiencing symptoms of shingles within the 72-hour window and has an immunosuppressive condition, antivirals such as aciclovir should be prescribed. Amitriptyline, which is used to manage post-herpetic neuralgia, would not be appropriate at this stage. Chlorphenamine is typically used to manage itching associated with chickenpox, but as this patient is only experiencing symptoms in one dermatome, it is more likely to be shingles. Flucloxacillin, an antibiotic used to treat bacterial skin infections, would not be appropriate in this case as the patient’s symptoms are consistent with herpes zoster infection.
Shingles is a painful blistering rash caused by reactivation of the varicella-zoster virus. It is more common in older individuals and those with immunosuppressive conditions. The rash is well demarcated by the affected dermatome and may be accompanied by fever and lethargy. Treatment includes analgesia, antivirals, and potentially oral corticosteroids. Complications include post-herpetic neuralgia, ocular and ear complications. Antivirals should be used within 72 hours to reduce the risk of post-herpetic neuralgia.
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This question is part of the following fields:
- Dermatology
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Question 28
Incorrect
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A 25-year-old male presents to the Emergency Department with severe abdominal pain. He appears to be in distress, shivering and writhing on the trolley. Despite previous investigations for abdominal pain, no cause has been found. The patient insists that he will harm himself unless he is given morphine for the pain. Which of the following best describes this behavior?
Your Answer: Munchausen's syndrome
Correct Answer: Malingering
Explanation:Fabricating or inflating symptoms for financial benefit is known as malingering, such as an individual who feigns whiplash following a car accident in order to receive an insurance payout.
This can be challenging as the individual may be experiencing withdrawal symptoms from opioid abuse. Nevertheless, among the given choices, the most suitable term to describe the situation is malingering since the individual is intentionally reporting symptoms to obtain morphine.
Psychiatric Terms for Unexplained Symptoms
There are various psychiatric terms used to describe patients who exhibit symptoms for which no organic cause can be found. One such disorder is somatisation disorder, which involves the presence of multiple physical symptoms for at least two years, and the patient’s refusal to accept reassurance or negative test results. Another disorder is illness anxiety disorder, which is characterized by a persistent belief in the presence of an underlying serious disease, such as cancer, despite negative test results.
Conversion disorder is another condition that involves the loss of motor or sensory function, and the patient does not consciously feign the symptoms or seek material gain. Patients with this disorder may be indifferent to their apparent disorder, a phenomenon known as la belle indifference. Dissociative disorder, on the other hand, involves the process of ‘separating off’ certain memories from normal consciousness, and may manifest as amnesia, fugue, or stupor. Dissociative identity disorder (DID) is the most severe form of dissociative disorder and was previously known as multiple personality disorder.
Factitious disorder, also known as Munchausen’s syndrome, involves the intentional production of physical or psychological symptoms. Finally, malingering is the fraudulent simulation or exaggeration of symptoms with the intention of financial or other gain. Understanding these psychiatric terms can help healthcare professionals better diagnose and treat patients with unexplained symptoms.
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This question is part of the following fields:
- Psychiatry
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Question 29
Incorrect
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An elderly woman of 74 years old comes in with a vesicular rash surrounding her left eye. The eye appears red and she is experiencing some sensitivity to light. The initial diagnosis is herpes zoster ophthalmicus and an immediate referral to ophthalmology is arranged. What is the probable treatment she will receive?
Your Answer: Oral prednisolone + topical aciclovir
Correct Answer: Oral aciclovir
Explanation:If systemic therapy is administered, topical antivirals are unnecessary. However, secondary inflammation may be treated with topical corticosteroids.
Herpes Zoster Ophthalmicus: Symptoms, Treatment, and Complications
Herpes zoster ophthalmicus (HZO) is a condition that occurs when the varicella-zoster virus reactivates in the area supplied by the ophthalmic division of the trigeminal nerve. It is responsible for approximately 10% of shingles cases. The main symptom of HZO is a vesicular rash around the eye, which may or may not involve the eye itself. Hutchinson’s sign, a rash on the tip or side of the nose, is a strong indicator of nasociliary involvement and increases the risk of ocular involvement.
Treatment for HZO involves oral antiviral medication for 7-10 days, ideally started within 72 hours of symptom onset. Intravenous antivirals may be necessary for severe infections or immunocompromised patients. Topical antiviral treatment is not recommended for HZO, but topical corticosteroids may be used to treat any secondary inflammation of the eye. Ocular involvement requires urgent ophthalmology review to prevent complications such as conjunctivitis, keratitis, episcleritis, anterior uveitis, ptosis, and post-herpetic neuralgia.
In summary, HZO is a condition caused by the reactivation of the varicella-zoster virus in the ophthalmic division of the trigeminal nerve. It presents with a vesicular rash around the eye and may involve the eye itself. Treatment involves oral antiviral medication and urgent ophthalmology review is necessary for ocular involvement. Complications of HZO include various eye conditions, ptosis, and post-herpetic neuralgia.
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This question is part of the following fields:
- Ophthalmology
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Question 30
Correct
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A 67-year-old man contacts emergency services due to experiencing central crushing chest pain that spreads to his left arm and jaw. Upon arrival at the emergency department, his heart rate is recorded at 50/min. An ECG is conducted, revealing ST elevation and bradycardia with a 1st-degree heart block. Based on the provided information, which leads are expected to display the ST elevation?
Your Answer: II, III and aVF
Explanation:An ST-elevated myocardial infarction affecting the inferior leads (II, III, aVF) can cause arrhythmias due to the involvement of the right coronary artery, which supplies blood to the AV node. This is evidenced by the patient’s presentation with 1st-degree heart block following the MI.
Anteroseptal changes in V1-V4 indicate involvement of the left anterior descending artery. Inferior changes in II, III, and aVF suggest the right coronary artery is affected. Anterolateral changes in V1-6, I, and aVL indicate the proximal left anterior descending artery is involved. Lateral changes in I, aVL, and possibly V5-6 suggest the left circumflex artery is affected. Posterior changes in V1-3 may indicate a posterior infarction, which is confirmed by ST elevation and Q waves in posterior leads (V7-9). This type of infarction is usually caused by the left circumflex artery, but can also be caused by the right coronary artery. Reciprocal changes of STEMI are typically seen as horizontal ST depression, tall and broad R waves, upright T waves, and a dominant R wave in V2. It is important to note that a new left bundle branch block (LBBB) may indicate acute coronary syndrome.
Overall, understanding the correlation between ECG changes and coronary artery territories is crucial in diagnosing acute coronary syndrome. By identifying the specific changes in the ECG, medical professionals can determine which artery is affected and provide appropriate treatment. Additionally, recognizing the reciprocal changes of STEMI and the significance of a new LBBB can aid in making an accurate diagnosis.
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This question is part of the following fields:
- Cardiovascular
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