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Question 1
Incorrect
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A 50-year-old businessman comes to the clinic complaining of watery, non-bloody diarrhea, anorexia, and abdominal bloating that has been going on for 10 days. He recently returned from a trip to India and his symptoms started 3 days after his return. Upon examination, he has dry mucous membranes but normal skin turgor and no fever. What is the probable organism responsible for his symptoms?
Your Answer: Escherichia coli
Correct Answer: Giardia lamblia
Explanation:The symptoms experienced by the patient, such as bloating and watery diarrhoea lasting for an extended period, suggest that the cause of their illness is Giardiasis rather than the more typical culprit, Escherichia coli, which is commonly associated with travellers’ diarrhoea.
Understanding Giardiasis
Giardiasis is a condition caused by a type of protozoan called Giardia lamblia. It is transmitted through the faeco-oral route and can be contracted through various means such as foreign travel, drinking water from rivers or lakes, and even male-male sexual contact. While some individuals may not experience any symptoms, others may suffer from non-bloody diarrhea, bloating, abdominal pain, lethargy, flatulence, and weight loss. In severe cases, malabsorption and lactose intolerance may occur. Diagnosis can be made through stool microscopy, stool antigen detection assay, or PCR assays. Treatment typically involves the use of metronidazole.
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This question is part of the following fields:
- Infectious Diseases
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Question 2
Incorrect
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A 56-year-old male patient presents to the emergency department with a 3-day history of severe right upper quadrant pain preceded by a 2-month history of intermittent ache in the right upper quadrant. His basic observations include heart rate 115 beats/minute, respiratory rate 28 breaths/minute, blood pressure 90/55 mmHg, temperature 38.9°C, oxygen saturation 93% on air. His past medical history includes hypertension and type 2 diabetes mellitus.
WCC 14 x 109cells/L
Bilirubin 80 mg/dL
Alkaline phosphatase 377 IU/L
Alanine aminotransferase 70 U/L
Amylase 300 U/L
What is the most likely diagnosis?Your Answer: Cholecystitis
Correct Answer: Ascending cholangitis
Explanation:The three main symptoms of Charcot’s cholangitis are fever, jaundice, and pain in the upper right quadrant. This type of cholangitis is known for causing these three symptoms, which are collectively referred to as Charcot’s triad. When there is inflammation in the gastrointestinal tract, amylase levels may be slightly elevated. While cholecystitis can lead to jaundice, it is usually not severe. On the other hand, pancreatitis typically does not cause jaundice, and amylase levels are typically much higher.
Understanding Ascending Cholangitis
Ascending cholangitis is a bacterial infection that affects the biliary tree, with E. coli being the most common culprit. This condition is often associated with gallstones, which can predispose individuals to the infection. Patients with ascending cholangitis may present with Charcot’s triad, which includes fever, right upper quadrant pain, and jaundice. However, this triad is only present in 20-50% of cases. Other common symptoms include hypotension and confusion. In severe cases, Reynolds’ pentad may be observed, which includes the additional symptoms of hypotension and confusion.
To diagnose ascending cholangitis, ultrasound is typically used as a first-line investigation to look for bile duct dilation and stones. Raised inflammatory markers may also be observed. Treatment involves intravenous antibiotics and endoscopic retrograde cholangiopancreatography (ERCP) after 24-48 hours to relieve any obstruction.
Overall, ascending cholangitis is a serious condition that requires prompt diagnosis and treatment. Understanding the symptoms and risk factors associated with this condition can help individuals seek medical attention early and improve their chances of a successful recovery.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 3
Correct
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You are examining test results. The midstream urine specimen (MSU) of a 26-year-old woman who is 14 weeks pregnant indicates a urinary tract infection. During the discussion of the outcome with the patient, she reports experiencing dysuria and having 'foul-smelling urine.' What is the best course of action?
Your Answer: Nitrofurantoin for 7 days
Explanation:As the woman is experiencing symptoms, she requires treatment with a pregnancy-safe antibiotic. Trimethoprim is not recommended for use during the first trimester of pregnancy, making nitrofurantoin the appropriate choice. According to NICE CKS, amoxicillin should not be used due to its high resistance levels.
Urinary tract infections (UTIs) are common in adults and can affect different parts of the urinary tract. The management of UTIs depends on various factors such as the patient’s age, gender, and pregnancy status. For non-pregnant women, local antibiotic guidelines should be followed if available. Trimethoprim or nitrofurantoin for three days are recommended by NICE Clinical Knowledge Summaries. However, if the patient is aged over 65 years or has visible or non-visible haematuria, a urine culture should be sent. Pregnant women with UTIs should be treated with nitrofurantoin, amoxicillin, or cefalexin for seven days. Trimethoprim should be avoided during pregnancy as it is teratogenic in the first trimester. Asymptomatic bacteriuria in pregnant women should also be treated to prevent progression to acute pyelonephritis. Men with UTIs should be offered a seven-day course of trimethoprim or nitrofurantoin unless prostatitis is suspected. A urine culture should be sent before antibiotics are started. Catheterised patients should not be treated for asymptomatic bacteria, but if symptomatic, a seven-day course of antibiotics should be given. Acute pyelonephritis requires hospital admission and treatment with a broad-spectrum cephalosporin or quinolone for 10-14 days. Referral to urology is not routinely required for men who have had one uncomplicated lower UTI.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 4
Correct
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A 38-year-old, overweight woman presents to the clinic with complaints of occasional abdominal pain for the past few months. She experienced a constant pain episode two days ago that started in the epigastric region and then moved to the right upper quadrant, accompanied by vomiting.
What is the most probable diagnosis?Your Answer: Biliary colic
Explanation:Biliary Colic and Other Abdominal Conditions: A Brief Overview
Biliary colic, diverticulitis, chronic pancreatitis, ulcerative colitis, and coeliac disease are all conditions that can cause abdominal pain and discomfort. Understanding the risk factors, symptoms, and diagnostic criteria for each can help healthcare professionals make accurate diagnoses and provide appropriate treatment. Biliary colic, for example, is characterized by severe, constant pain in the epigastrium or right upper quadrant, often accompanied by nausea and vomiting. Diverticulitis, on the other hand, typically presents with left lower quadrant pain and changes in bowel habits. Chronic pancreatitis is associated with intermittent attacks of severe pain in the mid-abdomen or left upper abdomen, while ulcerative colitis is characterized by rectal bleeding, frequent stools, and mucus discharge. Coeliac disease, the most common food intolerance worldwide, can present with a range of gastrointestinal and extraintestinal symptoms. By understanding the unique features of each condition, healthcare professionals can provide effective care and improve patient outcomes.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 5
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: Salbutamol
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 6
Correct
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A 30-year-old woman has been diagnosed with breast cancer. She had been using the combined pill for contraception before her diagnosis. Now, she wants to switch to a different method of contraception before starting chemotherapy. What would be the most suitable option?
Your Answer: Copper Intrauterine Device
Explanation:The copper intrauterine device is the recommended form of contraception for individuals with breast cancer. Hormonal forms of contraception are not recommended and are rated as a Category 4 risk, which is deemed unacceptable for the patient’s health.
The decision to prescribe the combined oral contraceptive pill is now based on the UK Medical Eligibility Criteria (UKMEC), which categorizes potential contraindications and cautions on a four-point scale. UKMEC 1 indicates no restrictions for use, while UKMEC 2 suggests that the benefits outweigh the risks. UKMEC 3 indicates that the disadvantages may outweigh the advantages, and UKMEC 4 represents an unacceptable health risk. Examples of UKMEC 3 conditions include controlled hypertension, a family history of thromboembolic disease in first-degree relatives under 45 years old, and current gallbladder disease. Examples of UKMEC 4 conditions include a history of thromboembolic disease or thrombogenic mutation, breast cancer, and uncontrolled hypertension. Diabetes mellitus diagnosed over 20 years ago is classified as UKMEC 3 or 4 depending on severity. In 2016, breast feeding between 6 weeks and 6 months postpartum was changed from UKMEC 3 to UKMEC 2.
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This question is part of the following fields:
- Reproductive Medicine
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Question 7
Incorrect
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A 10-year-old girl has been treated in the hospital for her first acute asthma exacerbation. She was previously only taking salbutamol as needed. After 24 hours, she is stable on inhaled salbutamol six puffs four times a day via a spacer and twice-daily steroid inhaler.
What is the most suitable next step in managing this acute asthma exacerbation?Your Answer: Wean down salbutamol to 2 puffs twice a day before hospital discharge
Correct Answer: Course of oral steroids
Explanation:Correct and Incorrect Treatment Approaches for Acute Asthma Exacerbation in Children
Acute asthma exacerbation in children requires prompt and appropriate treatment to prevent complications. Here are some correct and incorrect treatment approaches for this condition:
Course of oral steroids: Giving oral steroids early in the treatment of acute asthma attacks in children is advisable. The initial course length should be tailored to response.
Wean down salbutamol to 2 puffs twice a day before hospital discharge: Weaning down salbutamol to two puffs twice a day before hospital discharge is incorrect. Children may be discharged from hospital once stable on 3- to 4-hourly bronchodilators which can be continued at home.
Addition of salmeterol inhaler: Adding a salmeterol inhaler is incorrect. The initial next step of treatment should be inhaled corticosteroids (ICSs) for patients who have had an asthma attack in the last two years.
Continue monitoring in hospital until salbutamol is no longer required: Continuing monitoring in hospital until salbutamol is no longer required is incorrect. Children may be discharged from hospital once stable on 3- to 4-hourly bronchodilators which can be continued at home.
IV hydrocortisone: Administering IV hydrocortisone is incorrect. It is reserved for the treatment of acute life-threatening asthma.
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This question is part of the following fields:
- Respiratory Medicine
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Question 8
Correct
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A 28-year-old woman visits her doctor to discuss her fertility and the possibility of conceiving. She is worried about the risk of spina bifida after a friend had a baby with the condition. The patient has no notable medical history and no family history of birth defects. What is the recommended dosage of the supplement used to prevent neural tube defects during the first 12 weeks of pregnancy?
Your Answer: 400 micrograms
Explanation:To prevent neural tube defects in the foetus, it is crucial to consume folic acid. It is advised that women who are planning to conceive should take a supplement of 400 micrograms of folic acid daily. This dose should be continued until the 12th week of pregnancy. If there is a family history or a previous pregnancy affected by neural tube defects, the recommended dose should be increased.
Folic Acid: Importance, Deficiency, and Prevention
Folic acid is a vital nutrient that is converted to tetrahydrofolate (THF) in the body. It is found in green, leafy vegetables and plays a crucial role in the transfer of 1-carbon units to essential substrates involved in the synthesis of DNA and RNA. However, certain factors such as phenytoin, methotrexate, pregnancy, and alcohol excess can cause a deficiency in folic acid. This deficiency can lead to macrocytic, megaloblastic anemia and neural tube defects.
To prevent neural tube defects during pregnancy, it is recommended that all women take 400mcg of folic acid until the 12th week of pregnancy. Women at higher risk of conceiving a child with a neural tube defect should take 5mg of folic acid from before conception until the 12th week of pregnancy. Women are considered higher risk if they or their partner has a neural tube defect, they have had a previous pregnancy affected by a neural tube defect, or they have a family history of a neural tube defect. Additionally, women with certain medical conditions such as coeliac disease, diabetes, or thalassaemia trait, or those taking antiepileptic drugs, or who are obese (BMI of 30 kg/m2 or more) are also considered higher risk.
In summary, folic acid is an essential nutrient that plays a crucial role in DNA and RNA synthesis. Deficiency in folic acid can lead to serious health consequences, including neural tube defects. However, taking folic acid supplements during pregnancy can prevent these defects and ensure a healthy pregnancy.
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This question is part of the following fields:
- Reproductive Medicine
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Question 9
Correct
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What advice should you give a young adult (who is NOT pregnant) if they ask what is the recommended amount of alcohol they can consume?
Your Answer: No more than 14 units of alcohol per week. If you do drink as much as 14 units per week, it is best to spread this evenly over 3 days or more
Explanation:Alcohol consumption guidelines were revised in 2016 by the Chief Medical Officer, based on recommendations from an expert group report. The most significant change was a reduction in the recommended maximum number of units of alcohol for men from 21 to 14, aligning with the guidelines for women. The government now advises that both men and women should not exceed 14 units of alcohol per week, and if they do, it is best to spread it evenly over three or more days. Pregnant women are advised not to drink alcohol at all, as it can cause long-term harm to the baby. One unit of alcohol is equivalent to 10 mL of pure ethanol, and the strength of a drink is determined by its alcohol by volume (ABV). Examples of one unit of alcohol include a 25ml single measure of spirits with an ABV of 40%, a third of a pint of beer with an ABV of 5-6%, and half a 175ml standard glass of red wine with an ABV of 12%. To calculate the number of units in a drink, multiply the number of millilitres by the ABV and divide by 1,000.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 10
Correct
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A 55-year-old man requests a PSA test due to his father's recent prostate cancer diagnosis. You perform a digital rectal exam and inform him that his prostate feels normal. After further conversation, you agree to proceed with the test. What is the appropriate timing for PSA testing to ensure accurate results?
Your Answer: PSA testing can be done after abstaining from ejaculation or vigorous exercise for 48 hours
Explanation:To ensure accurate results, NICE recommends avoiding PSA testing for at least the following periods: 6 weeks after a prostate biopsy, 4 weeks after a confirmed urinary infection, 1 week after a digital rectal examination, and 48 hours after vigorous exercise or ejaculation, as these factors may cause an increase in PSA levels.
Prostate specific antigen (PSA) is an enzyme produced by both normal and cancerous prostate cells. It is commonly used as a marker for prostate cancer, but its effectiveness as a screening tool is still debated. The NHS Prostate Cancer Risk Management Programme (PCRMP) has released guidelines for handling requests for PSA testing in asymptomatic men. While a recent European trial showed a reduction in prostate cancer deaths, it also revealed a high risk of over-diagnosis and over-treatment. As a result, the National Screening Committee has decided not to introduce a screening programme, but rather allow men to make an informed decision. The PCRMP recommends age-adjusted upper limits for PSA levels, while NICE Clinical Knowledge Summaries suggest a lower threshold for referral. PSA levels can also be raised by factors such as benign prostatic hyperplasia, prostatitis, and urinary tract infections.
The specificity and sensitivity of PSA testing are poor, with a significant number of men with elevated PSA levels not having prostate cancer, and some with normal PSA levels having the disease. Various methods are used to add meaning to PSA levels, including age-adjusted upper limits and monitoring changes in PSA levels over time. It is also debated whether digital rectal examination causes a rise in PSA levels. It is important to note that PSA testing should be postponed after certain events, such as ejaculation or instrumentation of the urinary tract.
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This question is part of the following fields:
- Renal Medicine/Urology
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Question 11
Incorrect
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Which one of the following statements regarding scabies is untrue?
Your Answer:
Correct Answer: Patients who complain of pruritus 4 weeks following treatment should be retreated
Explanation:It is typical for itching to continue for a period of 4-6 weeks after elimination.
Scabies: Causes, Symptoms, and Treatment
Scabies is a skin condition caused by the Sarcoptes scabiei mite, which is spread through prolonged skin contact. It is most commonly seen in children and young adults. The mite burrows into the skin and lays its eggs in the stratum corneum, leading to intense itching. This itching is caused by a delayed-type IV hypersensitivity reaction to the mites/eggs, which occurs about 30 days after the initial infection. Symptoms of scabies include widespread itching, linear burrows on the fingers, interdigital webs, and flexor aspects of the wrist. In infants, the face and scalp may also be affected. Scratching can lead to secondary features such as excoriation and infection.
The first-line treatment for scabies is permethrin 5%, while malathion 0.5% is second-line. Patients should be advised to avoid close physical contact with others until treatment is complete. All household and close physical contacts should be treated at the same time, even if asymptomatic. Clothing, bedding, and towels should be laundered, ironed, or tumble-dried on the first day of treatment to kill off mites. The insecticide should be applied to all areas, including the face and scalp, contrary to the manufacturer’s recommendation. Patients should apply the insecticide cream or liquid to cool, dry skin, paying close attention to areas between fingers and toes, under nails, armpit area, and creases of the skin such as at the wrist and elbow. The insecticide should be left on the skin for 8-12 hours for permethrin or 24 hours for malathion before washing off. Treatment should be repeated 7 days later.
Crusted scabies, also known as Norwegian scabies, is seen in patients with suppressed immunity, especially HIV. The crusted skin will be teeming with hundreds of thousands of organisms. Isolation is essential, and ivermectin is the treatment of choice.
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This question is part of the following fields:
- Dermatology
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Question 12
Incorrect
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An 80-year-old man presents to the Emergency Department with a history of vomiting blood earlier in the day. What is the most significant factor indicating an upper gastrointestinal bleed?
Your Answer:
Correct Answer: Urea = 15.4 mmol/l on a background of normal renal function
Explanation:A temporary and disproportionate increase in blood urea can be caused by an upper gastrointestinal bleed, which can function as a source of protein.
Acute upper gastrointestinal bleeding is a common and significant medical issue that can be caused by various conditions, with oesophageal varices and peptic ulcer disease being the most common. The clinical features of this condition include haematemesis, melena, and a raised urea level due to the protein meal of the blood. The differential diagnosis for acute upper gastrointestinal bleeding includes oesophageal, gastric, and duodenal causes.
The management of acute upper gastrointestinal bleeding involves risk assessment using the Glasgow-Blatchford score, which helps clinicians decide whether patients can be managed as outpatients or not. Resuscitation is also necessary, including ABC, wide-bore intravenous access, and platelet transfusion if actively bleeding platelet count is less than 50 x 10*9/litre. Endoscopy should be offered immediately after resuscitation in patients with a severe bleed, and all patients should have endoscopy within 24 hours.
For non-variceal bleeding, proton pump inhibitors (PPIs) should not be given before endoscopy to patients with suspected non-variceal upper gastrointestinal bleeding. However, PPIs should be given to patients with non-variceal upper gastrointestinal bleeding and stigmata of recent haemorrhage shown at endoscopy. If further bleeding occurs, options include repeat endoscopy, interventional radiology, and surgery. For variceal bleeding, terlipressin and prophylactic antibiotics should be given to patients at presentation, and band ligation should be used for oesophageal varices and injections of N-butyl-2-cyanoacrylate for patients with gastric varices. Transjugular intrahepatic portosystemic shunts (TIPS) should be offered if bleeding from varices is not controlled with the above measures.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 13
Incorrect
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You assess a 10-month-old infant with parents of Jamaican descent. The parents have observed a minor bulge near the belly button. The child is healthy and falls on the 50th percentile. During the examination, you observe a small umbilical hernia that is less than 1 cm in size and can be reduced. What is the best course of action for this situation?
Your Answer:
Correct Answer: Reassure the parents that the vast majority resolve by the age of 4-5 years
Explanation:Abdominal wall hernias occur when an organ or the fascia of an organ protrudes through the wall of the cavity that normally contains it. Risk factors for developing these hernias include obesity, ascites, increasing age, and surgical wounds. Symptoms of abdominal wall hernias include a palpable lump, cough impulse, pain, obstruction (more common in femoral hernias), and strangulation (which can compromise the bowel blood supply and lead to infarction). There are several types of abdominal wall hernias, including inguinal hernias (which account for 75% of cases and are more common in men), femoral hernias (more common in women and have a high risk of obstruction and strangulation), umbilical hernias (symmetrical bulge under the umbilicus), paraumbilical hernias (asymmetrical bulge), epigastric hernias (lump in the midline between umbilicus and xiphisternum), incisional hernias (which may occur after abdominal surgery), Spigelian hernias (rare and seen in older patients), obturator hernias (more common in females and can cause bowel obstruction), and Richter hernias (a rare type of hernia that can present with strangulation without symptoms of obstruction). In children, congenital inguinal hernias and infantile umbilical hernias are the most common types, with surgical repair recommended for the former and most resolving on their own for the latter.
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This question is part of the following fields:
- Paediatrics
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Question 14
Incorrect
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A 35-year-old man with type 1 diabetes visits his GP for a check-up on his blood sugar levels. He has been monitoring his daily blood glucose readings and the GP calculates an average of 7.8 mmol/L, indicating the need for better control. However, his HbA1c level is 41.5 mmol/mol (5.9%), indicating good glycaemic control. What could be causing this inconsistency?
Your Answer:
Correct Answer: Sickle-cell anaemia
Explanation:Individuals with sickle cell anaemia and other haemoglobinopathies may have inaccurate HbA1c readings due to the shortened lifespan of their red blood cells, resulting in lower than actual levels. Conversely, conditions such as splenectomy, iron-deficiency anaemia, B12 deficiency, and alcoholism can lead to falsely elevated HbA1c levels. The accuracy of HbA1c as a measure of average blood glucose concentration is dependent on the lifespan of red blood cells.
Understanding Glycosylated Haemoglobin (HbA1c) in Diabetes Mellitus
Glycosylated haemoglobin (HbA1c) is a commonly used measure of long-term blood sugar control in diabetes mellitus. It is produced when glucose attaches to haemoglobin in the blood at a rate proportional to the glucose concentration. The level of HbA1c is influenced by the lifespan of red blood cells and the average blood glucose concentration. However, certain conditions such as sickle-cell anaemia, GP6D deficiency, and haemodialysis can interfere with accurate interpretation of HbA1c levels.
HbA1c is believed to reflect the blood glucose levels over the past 2-4 weeks, although it is generally thought to represent the previous 3 months. It is recommended that HbA1c be checked every 3-6 months until stable, then every 6 months. The Diabetes Control and Complications Trial (DCCT) has studied the complex relationship between HbA1c and average blood glucose. The International Federation of Clinical Chemistry (IFCC) has developed a new standardised method for reporting HbA1c in mmol per mol of haemoglobin without glucose attached.
Understanding HbA1c is crucial in managing diabetes mellitus and achieving optimal blood sugar control.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 15
Incorrect
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A 72-year-old man undergoing evaluation in the Medical Outpatient Department for complaints of joint pain is found to have weakly positive serum antinuclear antibodies (ANAs). All his other blood tests are within normal limits.
What is the most probable cause of this patient's ANA positivity?Your Answer:
Correct Answer: Age related
Explanation:Understanding the Relationship Between ANAs and Various Medical Conditions
As individuals age, the level of anti-nuclear antibodies (ANAs) in their blood tends to increase, particularly in those over 65 years old. Therefore, a weakly positive ANA sample in an older patient with normal blood results is likely due to age-related factors.
Chronic fatigue syndrome (CFS) is not associated with ANA positivity. This diagnosis is made only after ruling out all other possibilities and finding no biochemical evidence to support it.
Ankylosing spondylitis (AS) is not linked to any known antibodies. While patients with AS may have elevated levels of non-specific inflammatory markers, such as C-reactive protein and erythrocyte sedimentation rate, genetic testing for human leukocyte antigen (HLA)-B27 may aid in diagnosis.
Primary antiphospholipid (APL) antibody syndrome does not typically involve ANA positivity. If ANAs are present in a patient with APL syndrome, it suggests a secondary form of the condition associated with a connective tissue disorder. APL syndrome is usually characterized by anti-cardiolipin antibodies and abnormal clotting studies.
Myasthenia gravis, a condition characterized by fatiguability and weakness induced by repeated actions, is not related to ANAs. Instead, it is caused by antibodies targeting the nicotinic acetylcholine receptor.
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This question is part of the following fields:
- Immunology/Allergy
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Question 16
Incorrect
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A mother brings in her 3-day-old female baby to the pediatrician's office. She noticed a small cyst on the roof of the baby's mouth. Upon examination, a small white cystic vesicle measuring approximately 2 mm in diameter is found on the hard palate near the midline. What is the probable diagnosis?
Your Answer:
Correct Answer: Epstein's pearl
Explanation:Epstein’s pearl, a type of congenital cyst found in the mouth, typically does not require any treatment. These cysts are commonly found on the hard palate, but can also be mistaken for a tooth eruption when located on the gums. They usually resolve on their own within a few weeks. Neonatal teeth, on the other hand, are rare and not typically found on the hard palate. Bohn’s nodules are mucous gland cysts that are usually located on the buccal or lingual aspects of the alveolar ridges, and rarely on the palate. A congenital ranula is a papule or nodule that is firm and translucent, and is typically found on the anterior floor of the mouth, lateral to the lingual frenulum.
Understanding Epstein’s Pearl
Epstein’s pearl is a type of cyst that is present in the mouth from birth. It is commonly found on the hard palate, but can also be seen on the gums, which may be mistaken for a tooth eruption. The good news is that no treatment is usually required as these cysts tend to disappear on their own within a few weeks.
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This question is part of the following fields:
- Paediatrics
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Question 17
Incorrect
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A 21-year-old college student is brought to the emergency department by her roommates, presenting confusion and fever. She had been complaining of a severe headache and neck stiffness since yesterday. Her roommates have also noticed what appears to be bruising.
Upon examination, she appears acutely unwell, with a fever and nuchal rigidity. A widespread purpuric rash is observed, as well as general pallor and mottling.
Considering the probable diagnosis, what should be provided to her roommates?Your Answer:
Correct Answer: Oral ciprofloxacin now
Explanation:Prophylaxis for contacts of patients with meningococcal meningitis involves the use of oral ciprofloxacin or rifampicin. In this case, the patient’s symptoms indicate meningococcal meningitis, and therefore, household members and close contacts should be offered prophylaxis with ciprofloxacin as the preferred drug. Intramuscular benzylpenicillin is not appropriate for prophylaxis, but may be given to a patient with suspected meningococcal meningitis in a pre-hospital setting. Intravenous benzylpenicillin is a treatment option for the patient, not for contacts. Intravenous cefotaxime is also a treatment option for the patient, but not a suitable prophylactic antibiotic for contacts. Waiting until symptoms develop to give oral ciprofloxacin is not recommended – it should be given immediately.
The investigation and management of suspected bacterial meningitis are intertwined due to the potential negative impact of delayed antibiotic treatment. Patients should be urgently transferred to the hospital, and an ABC approach should be taken initially. A lumbar puncture should be delayed in certain circumstances, and IV antibiotics should be given as a priority if there is any doubt. The bloods and CSF should be tested for various parameters, and prophylaxis should be offered to households and close contacts of patients affected with meningococcal meningitis.
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This question is part of the following fields:
- Infectious Diseases
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Question 18
Incorrect
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A 15-year-old boy presents to his General Practitioner as he has been suffering from recurrent infections for the last few months. He has also been losing weight. He has taken four courses of antibiotics in the last six months for various respiratory tract infections. He also experienced an episode of shingles that took a few years to clear after becoming secondarily infected.
On examination, he is pale and underweight, with a body mass index (BMI) of 17.5 kg/m2. He has fine, downy hair on his back, abdomen and forearms. His temperature is 35.9 °C. His blood pressure is 90/45 mmHg while his pulse is 52 bpm.
What is the most likely cause of this patientâs immunodeficiency?
Your Answer:
Correct Answer: Malnutrition
Explanation:Differential diagnosis of immunodeficiency in an adolescent with weight loss and recurrent infection
Malnutrition, primary immunodeficiency, cytomegalovirus (CMV) infection, human immunodeficiency virus (HIV) infection, and diabetes mellitus are among the possible causes of immunodeficiency in an adolescent with weight loss and recurrent infection. Malnutrition can suppress the immune system and is often associated with anorexia nervosa, which can be characterized by a very low body mass index (BMI), lanugo hair growth, hypothermia, bradycardia, and hypotension. Primary immunodeficiency syndromes, which are usually inherited as single-gene disorders, tend to present in infancy or early childhood with poor growth and weight gain and recurrent, prolonged, severe, or atypical infections. Cytomegalovirus (CMV) is a herpes virus that can cause serious complications in immunocompromised individuals or congenital cases, but is usually asymptomatic in immunocompetent individuals. Human immunodeficiency virus (HIV) infection can result in immunodeficiency by infecting and destroying CD4 cells, and should be suspected in individuals with prolonged, severe, or recurrent infections, particularly if they are a member of a high-risk group. Diabetes mellitus, especially type I, can also cause dysfunction of the immune system and increase the risk of infection. However, in an adolescent with a low BMI, type II diabetes would be very unlikely.
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This question is part of the following fields:
- Immunology/Allergy
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Question 19
Incorrect
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A 56-year-old woman presents to the Emergency Department with severe loin to groin pain that had been intermittent throughout the day. She tells the doctor that she has a previous history of gout.
What is the most appropriate investigation?Your Answer:
Correct Answer: Abdomino-pelvic/KUB CT (non-contrast)
Explanation:A non-contrast abdomino-pelvic/KUB CT scan is the preferred imaging modality for diagnosing nephrolithiasis in patients with a history of gout. This test has a high sensitivity and specificity and can also detect other pathologies.
Intravenous urography is less sensitive and requires IV contrast material, which can cause allergic reactions or renal failure.
Renal ultrasonography is useful in pregnancy or in combination with a KUB radiograph but is less accurate for diagnosing ureteral stones.
Retrograde ureterography is rarely performed for diagnostic purposes but is essential when surgery is necessary.
Uric acid stones are associated with low urine pH, high purine intake, or malignancy, and can be treated with allopurinol or alkali therapy depending on the patient’s uric acid levels. -
This question is part of the following fields:
- Renal Medicine/Urology
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Question 20
Incorrect
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A 28-year-old pregnant woman comes to the clinic complaining of severe vomiting. She is currently 10 weeks pregnant and this is her first pregnancy. According to RCOG guidelines, what are the diagnostic criteria for hyperemesis gravidarum?
Your Answer:
Correct Answer: 5% pre-pregnancy weight loss AND dehydration AND electrolyte imbalance
Explanation:Weight loss before pregnancy
Lack of proper hydration
Disruption in electrolyte balanceHyperemesis gravidarum is an extreme form of nausea and vomiting of pregnancy that occurs in around 1% of pregnancies and is most common between 8 and 12 weeks. It is associated with raised beta hCG levels and can be caused by multiple pregnancies, trophoblastic disease, hyperthyroidism, nulliparity, and obesity. Referral criteria for nausea and vomiting in pregnancy include continued symptoms with ketonuria and/or weight loss, a confirmed or suspected comorbidity, and inability to keep down liquids or oral antiemetics. The diagnosis of hyperemesis gravidarum requires the presence of 5% pre-pregnancy weight loss, dehydration, and electrolyte imbalance. Management includes first-line use of antihistamines and oral cyclizine or promethazine, with second-line options of ondansetron and metoclopramide. Admission may be needed for IV hydration. Complications can include Wernicke’s encephalopathy, Mallory-Weiss tear, central pontine myelinolysis, acute tubular necrosis, and fetal growth issues.
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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 36-year-old woman visits her General Practitioner complaining of a 3 kg weight gain, fatigue, dry hair and skin, and a small diffuse goitre. She always feels cold and has a family history of thyroid disease.
Investigation Result Normal value
Thyroid-stimulating hormone (TSH) 18.0 mU/l 0.25â4.0 mU/l
Free T4 6 pmol/l 12â22 pmol/l
Thyroid peroxidase antibody Positive at high titres
What is the most probable diagnosis?Your Answer:
Correct Answer: Hashimotoâs thyroiditis
Explanation:The patient’s symptoms and blood test results suggest hypothyroidism, which is commonly caused by Hashimoto’s thyroiditis, an autoimmune disorder affecting the thyroid gland. Risk factors for this condition include a family history of autoimmune disease, being female, and having another autoimmune disorder. Positive thyroid antibodies and a diffuse goitre may also be present. De Quervain’s thyroiditis, on the other hand, typically presents with hyperthyroidism after a viral infection and is associated with neck pain and fever. Follicular thyroid carcinoma is characterized by a painless thyroid nodule and possible hoarseness or stridor if the recurrent laryngeal nerve is affected. Graves’ disease, the most common cause of hyperthyroidism, presents with symptoms such as sweating, anxiety, and weight loss, as well as eye signs in some cases. Multinodular goitre, which involves multiple autonomously functioning thyroid nodules, typically presents as hyperthyroidism with a multinodular goitre, but the patient in this scenario is hypothyroid.
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This question is part of the following fields:
- Endocrinology/Metabolic Disease
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Question 22
Incorrect
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A 32-year-old woman presents for follow-up regarding her frequent migraine attacks. Despite taking a combination of paracetamol and ibuprofen, she has not experienced significant relief. Her current medications include as-needed paracetamol and ibuprofen, as well as Cerazette, a progestogen-only pill. What is the most suitable medication to consider for reducing the frequency of her migraines?
Your Answer:
Correct Answer: Propranolol
Explanation:For women of childbearing age who suffer from migraines, propranolol is a better option than topiramate. This is because NICE recommends both drugs for migraine prophylaxis, but the combined oral contraceptive pill cannot be used due to the patient’s migraine history. While zolmitriptan can be used to stop attacks, it is not effective for prophylaxis.
Managing Migraines: Guidelines and Treatment Options
Migraines can be debilitating and affect a significant portion of the population. To manage migraines, it is important to understand the different treatment options available. According to the National Institute for Health and Care Excellence (NICE) guidelines, acute treatment for migraines involves a combination of an oral triptan and an NSAID or paracetamol. For young people aged 12-17 years, a nasal triptan may be preferred. If these measures are not effective, non-oral preparations of metoclopramide or prochlorperazine may be considered, along with a non-oral NSAID or triptan.
Prophylaxis should be given if patients are experiencing two or more attacks per month. NICE recommends topiramate or propranolol, depending on the patient’s preference, comorbidities, and risk of adverse events. Propranolol is preferred in women of childbearing age as topiramate may be teratogenic and reduce the effectiveness of hormonal contraceptives. Acupuncture and riboflavin may also be effective in reducing migraine frequency and intensity for some people. For women with predictable menstrual migraines, frovatriptan or zolmitriptan may be recommended as a type of mini-prophylaxis.
Specialists may consider other treatment options, such as candesartan or monoclonal antibodies directed against the calcitonin gene-related peptide (CGRP) receptor, like erenumab. However, pizotifen is no longer recommended due to common adverse effects like weight gain and drowsiness. It is important to exercise caution with young patients as acute dystonic reactions may develop. By following these guidelines and considering various treatment options, migraines can be effectively managed.
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This question is part of the following fields:
- Neurology
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Question 23
Incorrect
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A young adult woman complains that her mother interferes in every aspect of her life and tries to control her. The woman no longer speaks to her parents or eats meals with them. The mother has increased her efforts to maintain control.
Which of the following conditions could arise from this situation?Your Answer:
Correct Answer: Anorexia nervosa
Explanation:Psychological Disorders and Family Dynamics
Family dynamics can play a role in the development of certain psychological disorders. Anorexia nervosa, for example, may be linked to attempts to regain control and self-esteem through food restriction and weight loss. Dissociative identity disorder, on the other hand, is associated with severe childhood trauma, particularly sexual abuse. Narcissistic personality disorder is characterised by exaggerated feelings of self-importance and a strong need for approval from others. Schizophrenia may be influenced by highly expressed emotions within the family. Separation anxiety disorder, however, does not seem to be present in the given vignette. Understanding the relationship between family dynamics and psychological disorders can aid in diagnosis and treatment.
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This question is part of the following fields:
- Psychiatry
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Question 24
Incorrect
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A 52-year-old man has recently been diagnosed with type 2 diabetes mellitus. He was prescribed medication but a few days later he complained of stomach cramps and loose stools.
Which of the following medications is most likely responsible for these symptoms?Your Answer:
Correct Answer: Metformin
Explanation:Side Effects of Common Oral Diabetic Medications
Managing diabetes often involves the use of oral medications to help control blood sugar levels. However, these medications can come with side effects that need to be considered when choosing a treatment plan. Here are some common side effects of four oral diabetic medications:
Metformin: The most common side effects of metformin are abdominal pain, anorexia, diarrhea, nausea, taste disturbance, and vomiting. There is also a risk of developing lactic acidosis, particularly in patients with a history of heart failure and concomitant use of drugs that can acutely impair renal function.
Furosemide: Furosemide is a less likely option due to its potential to exacerbate diabetes and cause hypokalemia, which can be dangerous in certain patients. It can also cause urinary retention in patients with enlarged prostates.
Gliclazide: Gliclazide can encourage weight gain and may cause hypoglycemia if the dosage is excessive.
Pioglitazone: Pioglitazone should be used with caution in patients with cardiovascular disease or in combination with insulin due to an increased risk of heart failure, particularly in elderly people.
It is important to be familiar with these side effects to ensure patient compliance with medication and to choose the most appropriate treatment plan for each individual.
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This question is part of the following fields:
- Pharmacology/Therapeutics
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Question 25
Incorrect
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A 35-year-old woman with indigestion has been taking her friend's omeprazole for the past week, which has improved her symptoms. You want to check for the presence of Helicobacter pylori by using a stool antigen test (SAT) or a carbon-13-labelled urea breath test (UBT). What is the recommended waiting period after stopping a proton pump inhibitor (PPI) before conducting these tests?
Your Answer:
Correct Answer: 2-week washout period for either UBT or SAT
Explanation:H. pylori Testing and Treatment Guidelines
To ensure accurate diagnosis and appropriate treatment for H. pylori infection, it is recommended that adults with dyspepsia or reflux symptoms undergo a 2-week washout period before testing for H. pylori if they are receiving PPI therapy. This applies to both the carbon-13-labelled urea breath test (UBT) and stool antigen test (SAT). Testing should not be performed within two weeks of PPI use, as this can lead to false negatives.
Patients with dyspepsia should be offered H. pylori ‘test and treat’ using a UBT, SAT, or laboratory-based serology. Office-based serological tests should not be used due to their inadequate performance. Retesting for eradication should be performed using a UBT, as there is insufficient evidence to recommend the SAT for this purpose.
First-line treatment for H. pylori eradication involves a 7-day, twice-daily course of a PPI, amoxicillin, and either clarithromycin or metronidazole. Multiple regimens are available, and local protocols should be consulted.
Guidelines for Accurate H. pylori Testing and Treatment
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 26
Incorrect
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A 30-year-old man with a history of schizophrenia is prescribed olanzapine. What is the most probable adverse effect he may encounter?
Your Answer:
Correct Answer: Weight gain
Explanation:Olanzapine, an atypical antipsychotic, often leads to weight gain as a prevalent negative outcome.
Atypical antipsychotics are now recommended as the first-line treatment for patients with schizophrenia, as per the 2005 NICE guidelines. These medications have the advantage of significantly reducing extrapyramidal side-effects. However, they can also cause adverse effects such as weight gain, hyperprolactinaemia, and in the case of clozapine, agranulocytosis. The Medicines and Healthcare products Regulatory Agency has issued warnings about the increased risk of stroke and venous thromboembolism when antipsychotics are used in elderly patients. Examples of atypical antipsychotics include clozapine, olanzapine, risperidone, quetiapine, amisulpride, and aripiprazole.
Clozapine, one of the first atypical antipsychotics, carries a significant risk of agranulocytosis and requires full blood count monitoring during treatment. Therefore, it should only be used in patients who are resistant to other antipsychotic medication. The BNF recommends introducing clozapine if schizophrenia is not controlled despite the sequential use of two or more antipsychotic drugs, one of which should be a second-generation antipsychotic drug, each for at least 6-8 weeks. Adverse effects of clozapine include agranulocytosis, neutropaenia, reduced seizure threshold, constipation, myocarditis, and hypersalivation. Dose adjustment of clozapine may be necessary if smoking is started or stopped during treatment.
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This question is part of the following fields:
- Psychiatry
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Question 27
Incorrect
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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 37.8ÂșC. 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:
Correct 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 28
Incorrect
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A 47-year-old woman visits her GP and reports experiencing night sweats, hot flashes, and painful sexual intercourse due to vaginal dryness. The GP suspects that she may be going through menopause and orders a set of blood tests to check her hormonal levels.
What hormonal changes are probable in this patient?Your Answer:
Correct Answer: Cessation of oestradiol and progesterone production
Explanation:The cessation of oestradiol and progesterone production in the ovaries, which can be caused naturally or by medical intervention, leads to menopause. This decrease in hormone production often results in elevated levels of FSH and LH.
Understanding Menopause and Contraception
Menopause is a natural biological process that marks the end of a woman’s reproductive years. On average, women in the UK experience menopause at the age of 51. However, prior to menopause, women may experience a period known as the climacteric. During this time, ovarian function starts to decline, and women may experience symptoms such as hot flashes, mood swings, and vaginal dryness.
It is important for women to understand that they can still become pregnant during the climacteric period. Therefore, it is recommended to use effective contraception until a certain period of time has passed. Women over the age of 50 should use contraception for 12 months after their last period, while women under the age of 50 should use contraception for 24 months after their last period. By understanding menopause and the importance of contraception during the climacteric period, women can make informed decisions about their reproductive health.
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This question is part of the following fields:
- Reproductive Medicine
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Question 29
Incorrect
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An 18-year-old woman presents to her GP with painful lumps in her neck that appeared two days ago. She also reports a sore throat and fever. Upon examination, she has tender, enlarged, smooth masses on both sides. What is the most probable diagnosis?
Your Answer:
Correct Answer: Reactive lymphadenopathy
Explanation:Differentiating Neck Lumps: Causes and Characteristics
When a patient presents with a neck lump, it is important to consider the possible causes and characteristics to determine the appropriate course of action. In this case, the patient’s sore throat and fever suggest a throat infection, which has resulted in reactive lymphadenopathy. This is a common cause of neck lump presentations in primary care.
Other possible causes of neck lumps include goitre, which is a painless mass in the midline of the throat that is not associated with fever and may be functional if accompanied by hyperthyroidism. An abscess could also present as a painful neck lump, but the history of a sore throat and bilateral swelling make this less likely.
Branchial cysts are smooth, soft masses in the lateral neck that are usually benign and congenital in origin. Lipomas, on the other hand, are lumps caused by the accumulation of soft, fatty deposits under the skin and do not typically present with systemic features.
In summary, understanding the characteristics and possible causes of neck lumps can aid in the diagnosis and management of patients presenting with this symptom.
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This question is part of the following fields:
- ENT
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Question 30
Incorrect
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A 32-year-old man visits the general surgery practice with a 2-year history of occasional abdominal discomfort, bloating and change in bowel habit, which alternates between loose stools and constipation. He reports that these episodes are most intense during his work-related stress and after consuming spicy food. There is no history of weight loss or presence of blood or mucus in the stool. Physical examination, including digital rectal examination, is unremarkable. Bloods, including full blood count, liver function test, thyroid function test and coeliac screen are all normal.
Which of the following is the most likely diagnosis?Your Answer:
Correct Answer: Irritable bowel syndrome (IBS)
Explanation:Differential Diagnosis for Abdominal Symptoms: Irritable Bowel Syndrome, Ulcerative Colitis, Colorectal Cancer, Polycystic Ovarian Syndrome, and Ovarian Cancer
Abdominal symptoms can be caused by a variety of conditions, making differential diagnosis crucial. Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder characterized by abdominal pain, bloating, and altered bowel habits. It is more prevalent in women and can be associated with stress. Diagnosis is made by excluding other differential diagnoses, and management includes psychological support and dietary measures, with pharmacological treatment as adjunctive therapy.
Ulcerative colitis (UC) presents with rectal bleeding, frequent stools, and mucus discharge from the rectum. Physical examination may reveal proctitis and left-sided abdominal tenderness. UC is associated with extracolonic manifestations, but this patient’s symptoms are not consistent with a diagnosis of UC.
Colorectal cancer typically presents with rectal bleeding, change in bowel habits, abdominal pain, weight loss, and malaise. However, this patient’s age, clinical history, and normal examination findings make this diagnosis unlikely.
Polycystic ovarian syndrome (PCOS) presents with hyperandrogenism symptoms such as oligomenorrhea, hirsutism, and acne. Abdominal pain, bloating, and change in bowel habits are not features of PCOS.
Ovarian cancer may present with minimal or non-specific symptoms, but persistent abdominal distension and/or pain, early satiety, or lethargy may be present. However, this patient’s young age makes this diagnosis less likely.
The National Institute for Health and Care Excellence recommends that any woman aged over 50 years who presents with new IBS-like symptoms within the past year should have ovarian cancer excluded with a serum CA125 measurement.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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