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Question 1
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Which statement accurately describes acute compartment syndrome?
Your Answer: Passive stretch of affected muscles exacerbates pain
Explanation:Compartment Syndrome
Compartment syndrome is a condition that occurs when the pressure within a muscle compartment increases to a level that exceeds arterial blood pressure. This can happen even without a fracture, such as in cases of crush injuries. The earliest and most reliable symptom of compartment syndrome is pain, which can be exacerbated by passive stretching of the muscles in the affected area. As the condition progresses, loss of peripheral pulses may occur, indicating that the pressure has reached a critical level.
Treatment for compartment syndrome involves decompression of the affected compartment(s), including the skin. It is important to recognize the symptoms of compartment syndrome early on in order to prevent further damage and potential loss of function. By the signs and symptoms of this condition, individuals can seek prompt medical attention and receive the appropriate treatment to alleviate the pressure and prevent complications.
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This question is part of the following fields:
- Neurology
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Question 2
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A 55-year-old woman comes to her GP complaining of fatigue, weakness, and worsening itchiness. Upon examination, there are no significant findings. Blood tests are ordered and the results are as follows:
Test Result
Full blood count Normal
Renal profile Normal
Alkaline phosphatase Elevated
γ-glutamyl transferase Elevated
Alanine and aspartate aminotransferase Normal
Bilirubin Slightly elevated
Antimitochondrial antibody M2 (AMA) Positive
Anti-smooth muscle antibody (ASMA) Negative
Anti-liver/kidney microsomal antibody (anti-LKM) Negative
Hepatitis screen Negative
HIV virus type 1 and type 2 RNA Negative
What is the most probable diagnosis?Your Answer: Primary biliary cholangitis (PBC)
Explanation:Autoimmune Liver Diseases: Differentiating PBC, PSC, and AIH
Autoimmune liver diseases, including primary biliary cholangitis (PBC), primary sclerosing cholangitis (PSC), and autoimmune hepatitis (AIH), can present with non-specific symptoms and insidious onset. However, certain demographic and serological markers can help differentiate between them.
PBC is characterized by chronic granulomatous inflammation of small intrahepatic bile ducts, leading to progressive cholestasis, cirrhosis, and portal hypertension. It is often diagnosed incidentally or presents with lethargy and pruritus. AMA M2 subtype positivity is highly specific for PBC, and treatment involves cholestyramine for itching and ursodeoxycholic acid. Liver transplantation is the only curative treatment.
PSC is a disorder of unknown etiology characterized by non-malignant, non-bacterial inflammation, fibrosis, and strictures of the intra- and extrahepatic biliary tree. It is more common in men and frequently found in patients with ulcerative colitis. AMA is negative, and diagnosis is based on MRCP or ERCP showing a characteristic beaded appearance of the biliary tree.
AIH is a disorder of unknown cause characterized by autoantibodies directed against hepatocyte surface antigens. It can present acutely with signs of fulminant autoimmune disease or insidiously. There are three subtypes with slightly different demographic distributions and prognoses, and serological markers such as ASMA, anti-LKM, and anti-soluble liver antigen antibodies can help differentiate them.
A hepatitis screen is negative in this case, ruling out hepatitis C. A pancreatic head tumor would present with markedly elevated bilirubin and a normal autoimmune screen.
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This question is part of the following fields:
- Gastroenterology
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Question 3
Correct
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A 27-year-old female patient visits her general practitioner complaining of a dull pelvic pain and foul-smelling discharge that has been worsening for the past 5 weeks. She has been using a hormonal intrauterine device for a year and does not experience menstruation with it. She has received the human papillomavirus vaccine but has not undergone any smear tests. What is the probable diagnosis?
Your Answer: Pelvic inflammatory disease
Explanation:The patient’s symptoms suggest that she may have pelvic inflammatory disease, which is a common diagnosis for women who experience long-term pelvic pain and smelly discharge. It is possible that she has a sexually transmitted infection, as she is not using a barrier method with her intrauterine device. The doctor should take high vaginal swabs and prescribe antibiotics if necessary. It is also recommended to perform a smear test while the patient is there.
While ectopic pregnancy is a possibility, it is less likely due to the patient’s intrauterine device. However, a pregnancy test should still be conducted. Endometriosis is also a possibility, but the patient’s pain does not seem to be related to her menstrual cycle.
Although the patient missed her first cervical smear, cervical cancer is not the most likely diagnosis based on her symptoms and the fact that she has received the human papillomavirus vaccine. However, it is still important for her to have regular smear tests.
Inflammatory bowel disease is another potential cause of pelvic pain, but it is usually accompanied by other symptoms such as weight loss, rectal bleeding, and diarrhea.
Understanding Pelvic Inflammatory Disease
Pelvic inflammatory disease (PID) is a condition that occurs when the female pelvic organs, including the uterus, fallopian tubes, ovaries, and surrounding peritoneum, become infected and inflamed. The most common cause of PID is an ascending infection from the endocervix, often caused by Chlamydia trachomatis. Other causative organisms include Neisseria gonorrhoeae, Mycoplasma genitalium, and Mycoplasma hominis. Symptoms of PID include lower abdominal pain, fever, dyspareunia, dysuria, menstrual irregularities, vaginal or cervical discharge, and cervical excitation.
To diagnose PID, a pregnancy test should be done to rule out an ectopic pregnancy, and a high vaginal swab should be taken to screen for Chlamydia and gonorrhoeae. However, these tests are often negative, so consensus guidelines recommend having a low threshold for treatment due to the potential complications of untreated PID. Management typically involves a combination of antibiotics, such as oral ofloxacin and oral metronidazole or intramuscular ceftriaxone, oral doxycycline, and oral metronidazole.
Complications of PID include perihepatitis (Fitz-Hugh Curtis Syndrome), which occurs in around 10% of cases and is characterized by right upper quadrant pain that may be confused with cholecystitis. PID can also lead to infertility, with the risk as high as 10-20% after a single episode, chronic pelvic pain, and ectopic pregnancy. In mild cases of PID, intrauterine contraceptive devices may be left in, but recent guidelines suggest that removal of the IUD should be considered for better short-term clinical outcomes. Understanding PID and its potential complications is crucial for early diagnosis and effective management.
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This question is part of the following fields:
- Gynaecology
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Question 4
Correct
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A 30-year-old female presents with menorrhagia that has not responded to treatment with non-steroidal anti-inflammatory drugs.
She underwent sterilisation two years ago.
What would be the most suitable treatment for her?Your Answer: Intrauterine system (Mirena)
Explanation:Treatment Options for Menorrhagia
Menorrhagia, or heavy menstrual bleeding, can be a distressing condition for women. Current guidelines recommend the use of Mirena (IUS) as the first line of treatment, even for women who do not require contraception. Patient preference is important in the decision-making process, but IUS is still the preferred option.
If IUS is not suitable or preferred, there are several other treatment options available. Tranexamic acid, a medication that prevents the breakdown of blood clots, is a second-line option. Non-steroidal anti-inflammatory drugs (NSAIDs) and combined oral contraceptive pills can also be used to prevent the proliferation of the endometrium.
If these options are not effective, oral or injected progestogens can be used to prevent endometrial proliferation. Gonadotrophin-releasing hormone (GnRH) agonists, such as Goserelin, are also available as a last resort.
It is important for women to discuss their options with their healthcare provider and choose the treatment that is best for them. With the variety of options available, there is likely a treatment that can effectively manage menorrhagia and improve quality of life.
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This question is part of the following fields:
- Gynaecology
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Question 5
Correct
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A 16-year-old woman presents with primary amenorrhoea. She is of normal height and build and has normal intellect. Her breast development is normal, and pubic hair is of Tanner stage II. Past history revealed an inguinal mass on the right side, which was excised 2 years ago. Ultrasonography of the lower abdomen reveals no uterus.
Which of the following tests will help in diagnosis of the condition?Your Answer: Karyotype
Explanation:Diagnosis of Androgen Insensitivity Syndrome: A Case Study
The presented case strongly suggests the presence of androgen insensitivity syndrome, a condition where a patient’s phenotype and secondary sexual characteristics differ from their karyotype and gonads. In this case, the patient is likely to have a karyotype of 46,XY and be a male pseudohermaphrodite. Androgen insensitivity syndrome is associated with mutations in the AR gene, which codes for the androgen receptor. In complete androgen insensitivity, the body cannot respond to androgens at all, resulting in a female phenotype, female secondary sexual characteristics, no uterus, and undescended testes.
Karyotyping is the key diagnostic investigation to confirm the diagnosis of androgen insensitivity syndrome. Serum oestradiol levels may vary according to the type of androgen insensitivity disorder and are unlikely to aid the diagnosis. Pituitary MRI may be a second diagnostic investigation if karyotype abnormalities are ruled out. Transvaginal ultrasound is not necessary if an abdominal ultrasound has already been performed and showed an absent uterus.
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This question is part of the following fields:
- Gynaecology
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Question 6
Correct
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A 68-year-old woman comes to the clinic complaining of colicky abdominal pain for the past 2 days and vomiting for the past 24 hours. She has a medical history of hypertension, glaucoma, and hysterectomy 20 years ago. During the examination, her abdomen appears distended with tinkling bowel sounds. What is the probable diagnosis?
Your Answer: Small bowel obstruction
Explanation:Based on the patient’s history of previous intra-abdominal surgery, it is highly probable that they are suffering from small bowel obstruction caused by adhesions. Symptoms typically include early vomiting and later absolute constipation. Treatment involves administering IV fluids and inserting a nasogastric tube. Diagnostic tests such as an abdominal x-ray to check for dilated bowel loops and an erect chest x-ray to detect pneumoperitoneum may be necessary. If conservative treatment fails to improve the patient’s condition, a CT scan may be required to determine the location and type of obstruction. Close collaboration with the surgical team is also recommended.
Imaging for Bowel Obstruction
Bowel obstruction is a condition that requires immediate medical attention. One of the key indications for diagnosing this condition is through imaging, particularly an abdominal film. The imaging process is done to identify whether the obstruction is in the small or large bowel.
In small bowel obstruction, the maximum normal diameter is 35 mm, and the valvulae conniventes extend all the way across. On the other hand, in large bowel obstruction, the maximum normal diameter is 55 mm, and the haustra extend about a third of the way across.
A CT scan is also used to diagnose small bowel obstruction. The scan shows distension of small bowel loops proximally, such as the duodenum and jejunum, with an abrupt transition to an intestinal segment of normal caliber. Additionally, a small amount of free fluid intracavity may be present.
In summary, imaging is a crucial tool in diagnosing bowel obstruction. It helps identify the location of the obstruction and the extent of the damage. Early detection and treatment of bowel obstruction can prevent further complications and improve the patient’s prognosis.
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This question is part of the following fields:
- Surgery
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Question 7
Correct
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A 25-year-old man presents with a complaint of painful hands. He reports that his fingers turn white and become numb when exposed to cold, and then turn blue upon rewarming. His medical history is unremarkable, and he works in construction. On examination, there is no evidence of digital ulcers, calcinosis, chilblains, rash, or arthralgia. His blood results show a hemoglobin level of 145 g/L, platelet count of 260 * 109/L, WBC count of 6.2 * 109/L, and ESR of 10mm/hr. What is the most likely cause of his symptoms?
Your Answer: Use of vibrating tools
Explanation:Understanding Raynaud’s Phenomenon
Raynaud’s phenomenon is a condition where the digital arteries and cutaneous arteriole overreact to cold or emotional stress, causing an exaggerated vasoconstrictive response. It can be classified as primary or secondary. Primary Raynaud’s disease is more common in young women and presents with bilateral symptoms. On the other hand, secondary Raynaud’s phenomenon is associated with underlying connective tissue disorders such as scleroderma, rheumatoid arthritis, and systemic lupus erythematosus, among others.
Factors that suggest an underlying connective tissue disease include onset after 40 years, unilateral symptoms, rashes, presence of autoantibodies, and digital ulcers. Management of Raynaud’s phenomenon involves referral to secondary care for patients with suspected secondary Raynaud’s phenomenon. First-line treatment includes calcium channel blockers such as nifedipine. In severe cases, IV prostacyclin (epoprostenol) infusions may be used, and their effects may last for several weeks or months.
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This question is part of the following fields:
- Musculoskeletal
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Question 8
Incorrect
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A 50-year-old man has been diagnosed with anal cancer. What is the most significant factor that increases the risk of developing anal cancer?
Your Answer: Smoking
Correct Answer: HPV infection
Explanation:Anal cancer is primarily caused by HPV infection, which is the most significant risk factor. Other factors may also contribute, but the link between HPV infection and anal cancer is the strongest. This is similar to how HPV infection can lead to cervical cancer by causing oncogenic changes in the cervical mucosa.
Understanding Anal Cancer: Definition, Epidemiology, and Risk Factors
Anal cancer is a type of malignancy that occurs exclusively in the anal canal, which is bordered by the anorectal junction and the anal margin. The majority of anal cancers are squamous cell carcinomas, but other types include melanomas, lymphomas, and adenocarcinomas. The incidence of anal cancer is relatively rare, with an annual rate of about 1.5 in 100,000 in the UK. However, the incidence is increasing, particularly among men who have sex with men, due to widespread infection by human papillomavirus (HPV).
There are several risk factors associated with anal cancer, including HPV infection, anal intercourse, a high lifetime number of sexual partners, HIV infection, immunosuppressive medication, a history of cervical cancer or cervical intraepithelial neoplasia, and smoking. Patients typically present with symptoms such as perianal pain, perianal bleeding, a palpable lesion, and faecal incontinence.
To diagnose anal cancer, T stage assessment is conducted, which includes a digital rectal examination, anoscopic examination with biopsy, and palpation of the inguinal nodes. Imaging modalities such as CT, MRI, endo-anal ultrasound, and PET are also used. The T stage system for anal cancer is described by the American Joint Committee on Cancer and the International Union Against Cancer. It includes TX primary tumour cannot be assessed, T0 no evidence of primary tumour, Tis carcinoma in situ, T1 tumour 2 cm or less in greatest dimension, T2 tumour more than 2 cm but not more than 5 cm in greatest dimension, T3 tumour more than 5 cm in greatest dimension, and T4 tumour of any size that invades adjacent organ(s).
In conclusion, understanding anal cancer is crucial in identifying the risk factors and symptoms associated with this type of malignancy. Early diagnosis and treatment can significantly improve the prognosis and quality of life for patients.
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This question is part of the following fields:
- Surgery
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Question 9
Correct
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You are summoned to the delivery room for the forceps delivery of a baby of 37 week gestation who experienced fetal distress during labour. The attending obstetrician passes the baby to you for resuscitation. What is the initial step?
Your Answer: Dry the baby
Explanation:Can you rephrase the algorithm for newborn resuscitation recommended by the UK resuscitation council?
After birth, the first step is to dry the baby, maintain their temperature, and start timing. Next, assess the baby’s tone, breathing, and heart rate. If the baby is gasping or not breathing, open their airway and give five inflation breaths. Then, reassess the heart rate. If there is no increase, check the chest movement to ensure the inflation breaths are adequate. If the chest is not moving, recheck the head position, consider two-person airway control, and repeat the inflation breaths. If the chest is moving but the heart rate is still undetectable or less than 60 beats per minute, start chest compressions at a ratio of 3 compressions to 1 inflation breath (3:1). Reassess the heart rate every 30 seconds, and if it is still undetectable or very slow, consider IV access and drugs.
The Apgar score is a tool used to evaluate the health of a newborn baby. It is recommended by NICE to be assessed at 1 and 5 minutes after birth, and again at 10 minutes if the initial score is low. The score is based on five factors: pulse, respiratory effort, color, muscle tone, and reflex irritability. A score of 0-3 is considered very low, 4-6 is moderate low, and 7-10 indicates that the baby is in good health. The score helps healthcare professionals quickly identify any potential issues and provide appropriate care.
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This question is part of the following fields:
- Paediatrics
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Question 10
Correct
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A 63-year-old man presents to the Emergency Department with vague, crampy central abdominal ‘discomfort’ for the last three days. He was recently prescribed codeine phosphate for knee pain, which is secondary to osteoarthritis. He has never had this type of abdominal discomfort before. He last moved his bowels three days ago but denies nausea and vomiting. His past medical history is significant for hypertension. He has a 40-pack-year smoking history and denies any history of alcohol use. He has had no previous surgery.
His physical examination is normal. His observations and blood test results are shown below.
Temperature 36.3°C
Blood pressure 145/88 mmHg
Respiratory rate 15 breaths/min
Oxygen saturation (SpO2) 99% (room air)
Investigation Result Normal value
White cell count (WCC) 5.5 × 109/l 4–11 × 109/l
C-reactive protein (CRP) 1.5 mg/dl 0–10 mg/l
Total bilirubin 5.0 µmol/l 2–17 µmol/l
The Emergency doctor performs an abdominal ultrasound to examine for an abdominal aortic aneurysm. During this process, he also performs an ultrasound scan of the right upper quadrant, which shows several gallstones in a thin-walled gallbladder. The abdominal aorta is visualised and has a diameter of 2.3 cm. The patient’s abdominal pain is thought to be due to constipation.
Which of the following is the most appropriate management for this patient’s gallstones?Your Answer: No intervention required
Explanation:Differentiating Management Options for Gallstone Disease
Gallstone disease is a common condition that can present with a variety of symptoms. The management of this condition depends on the patient’s clinical presentation and the severity of their disease. Here are some differentiating management options for gallstone disease:
No Intervention Required:
If a patient presents with vague abdominal pain after taking codeine phosphate, it is important to exclude the possibility of a ruptured abdominal aortic aneurysm. However, if the patient has asymptomatic gallstone disease, no intervention is required, and they can be managed expectantly.Elective Cholecystectomy:
For patients with asymptomatic gallstone disease, prophylactic cholecystectomy is not indicated unless there is a high risk of life-threatening complications. However, if the patient has symptomatic gallstone disease, such as colicky right upper quadrant pain, elective cholecystectomy may be necessary.Endoscopic Retrograde Cholangiopancreatography (ERCP):
ERCP is indicated for patients with common duct bile stones or if stenting of benign or malignant strictures is required. However, if the patient has asymptomatic gallstone disease, ERCP is not necessary.Immediate Cholecystectomy:
If a patient has acute cholecystitis (AC), immediate cholecystectomy is indicated. AC typically presents with right upper quadrant pain and elevated inflammatory markers.Percutaneous Cholecystectomy:
For critically unwell patients who are poor surgical candidates, percutaneous cholecystectomy may be necessary. This procedure involves the image-guided placement of a drainage catheter into the gallbladder lumen to stabilize the patient before a more controlled surgical approach can be taken in the future.In summary, the management of gallstone disease depends on the patient’s clinical presentation and the severity of their disease. It is important to differentiate between the different management options to provide the best possible care for each patient.
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This question is part of the following fields:
- Gastroenterology
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