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Question 1
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A 32-year-old female with a history of alcoholic liver disease presents with frank haematemesis. She had been discharged just two months ago after receiving treatment for bleeding oesophageal varices. What is the most suitable course of action to take while waiting for endoscopy after resuscitation?
Your Answer: Terlipressin
Explanation:Variceal haemorrhage is a serious condition that requires prompt management. The initial treatment involves resuscitation of the patient before endoscopy. Correcting clotting with FFP and vitamin K is important, as is the use of vasoactive agents such as terlipressin or octreotide. Prophylactic IV antibiotics are also recommended to reduce mortality in patients with liver cirrhosis. Endoscopic variceal band ligation is the preferred method of treatment, and the use of a Sengstaken-Blakemore tube or Transjugular Intrahepatic Portosystemic Shunt (TIPSS) may be necessary if bleeding cannot be controlled. Propranolol and EVL are effective in preventing rebleeding and mortality, and are recommended by NICE guidelines. Proton pump inhibitor cover is given to prevent EVL-induced ulceration.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 2
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What is the most frequent non-intestinal symptom of Crohn's disease?
Your Answer: Arthritis
Explanation:Both Crohn’s and UC have arthritis as their most common extra-intestinal feature.
Understanding Crohn’s Disease
Crohn’s disease is a type of inflammatory bowel disease that affects various parts of the digestive tract, from the mouth to the anus. Although the exact cause of Crohn’s disease is unknown, there is a strong genetic susceptibility. The disease is characterized by inflammation in all layers of the digestive tract, which can lead to complications such as strictures, fistulas, and adhesions. Symptoms of Crohn’s disease typically appear in late adolescence or early adulthood and may include non-specific symptoms such as weight loss and lethargy, diarrhea, abdominal pain, and perianal disease. Extra-intestinal features, such as arthritis, erythema nodosum, and osteoporosis, are also common in patients with Crohn’s disease.
To diagnose Crohn’s disease, doctors may look for raised inflammatory markers, increased faecal calprotectin, anemia, and low levels of vitamin B12 and vitamin D. It is important to note that Crohn’s disease shares some extra-intestinal features with ulcerative colitis, another type of inflammatory bowel disease. Arthritis is the most common extra-intestinal feature in both Crohn’s disease and ulcerative colitis, while primary sclerosing cholangitis is much more common in ulcerative colitis. Understanding the symptoms and features of Crohn’s disease can help with early diagnosis and management of the disease.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 3
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A 30-year-old woman presents with chronic diarrhoea. She says that her stools float and are difficult to flush away.
Investigations reveal the following:
Investigation Result Normal value
Potassium (K+) 3.1 mmol/l 3.5–5.0 mmol/l
Corrected calcium (Ca2+) 2.08 mmol/l 2.20–2.60 mmol/l
Albumin 29 g/l 35–55 g/l
Haemoglobin (Hb) 91 g/l 115–155 g/l
Mean corpuscular volume (MCV) 89 fl 76–98 fl
Coeliac disease is suspected.
Which of the following is the initial investigation of choice?Your Answer: Anti-tissue transglutaminase (anti-TTG)
Explanation:Diagnosis and Investigation of Coeliac Disease
Coeliac disease is a possible diagnosis in patients presenting with chronic diarrhoea and steatorrhoea. The initial investigation of choice is the anti-tissue transglutaminase (anti-TTG) test, which has a sensitivity of over 96%. However, it is important to check immunoglobulin A (IgA) levels concurrently, as anti-TTG is an IgA antibody and may not be raised in the presence of IgA deficiency.
The treatment of choice for coeliac disease is a lifelong gluten-free diet, avoiding gluten-containing foods such as wheat, barley, rye, and oats. Patients with coeliac disease are at increased risk of small bowel lymphoma and oesophageal carcinoma over the long term.
While faecal fat estimation may be useful in estimating steatorrhoea, small bowel biopsy is the gold standard investigation for coeliac disease. However, this would not be the initial investigation of choice as it is invasive. An anti-TTG test is more sensitive and specific than an anti-gliadin test in untreated coeliac disease. Magnesium (Mg2+) levels may be abnormal in coeliac disease, but this would not be diagnostic and therefore not the first investigation of choice.
In summary, the diagnosis of coeliac disease requires a combination of clinical presentation, laboratory investigations, and small bowel biopsy if necessary. The anti-TTG test is the initial investigation of choice, and a gluten-free diet is the treatment of choice.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 4
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A 32-year-old woman with a 9-month history of weight loss, intermittent bloody mucus stools and abdominal pain undergoes a colonoscopy, which shows a mucosal ‘cobblestone’ pattern and skip lesions. She drinks approximately four units of alcohol a week and has a smoking history of five pack years.
Which of the following is the most appropriate lifestyle advice for this patient?Your Answer: Stop smoking
Explanation:Lifestyle Advice for Patients with Inflammatory Bowel Disease
Inflammatory bowel disease (IBD) is a chronic inflammatory process that can affect any part of the gastrointestinal tract. Patients with IBD may experience symptoms such as diarrhoea, abdominal pain, and bleeding. Here are some lifestyle advice for patients with IBD:
Stop smoking: Research suggests that smoking can make Crohn’s disease worse. Smokers with Crohn’s disease have more severe symptoms and complications, require more medication, and are more likely to need surgery.
Eat a balanced diet: Patients with IBD may need to be careful about the amount and type of fibre in their diet. During flare-ups, it may be helpful to reduce the amount of insoluble fibre consumed, but, once the flare-up is over, it is important to increase fibre intake again.
Avoid alcohol: Although there is no evidence that alcohol consumption worsens IBD symptoms, alcohol can affect the lining of the gastrointestinal tract and interact with certain medications.
Quit smoking: Although smoking may delay or even prevent ulcerative colitis, the health risks of smoking outweigh any benefits seen in UC, and strongly discourage smoking in everyone, whether or not they have IBD.
Consider probiotics: The role of probiotics in IBD is not fully understood, but their use can be discussed with a General Practitioner or dietitian. More research is needed on their general effectiveness.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 5
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A 44-year-old woman presents to the emergency department with sudden onset abdominal pain and vomiting for the past 5 days. She feels nauseated and cannot tolerate any food and only minimal liquid. She denies diarrhoea and has not had a bowel movement for 4 days.
Her past medical history includes chronic lower back pain for which she takes regular co-codamol. The last time she was in hospital was for her cesarean section 10 years ago.
Upon examination, she appears clammy and dehydrated. Her abdomen is distended and tender throughout. Bowel sounds are inaudible.
What is the most probable underlying cause of this patient's presentation?Your Answer: Adhesions
Explanation:The most common cause of small bowel obstruction is adhesions. This patient is experiencing symptoms such as abdominal pain, distention, and constipation, which are similar to those of large bowel obstruction. However, the onset of nausea and vomiting is an early sign of small bowel obstruction, indicating a proximal lesion. Adhesions are scar tissue that can form due to inflammation or manipulation of the abdominal contents during surgery, and they are often present in patients who are asymptomatic for years before experiencing symptoms. Given the patient’s history of a previous cesarean section, adhesional small bowel obstruction is a likely diagnosis.
Large bowel obstruction is most commonly caused by colorectal cancer, and symptoms include abdominal pain, distention, and constipation. However, nausea and vomiting are later signs compared to small bowel obstruction.
Gallstone ileus is a rare complication of cholecystitis where a gallstone passes through a fistula between the gallstone and small bowel before becoming impacted, leading to small bowel obstruction.
Inguinal hernias can also cause small bowel obstruction, as they involve a protrusion of abdominal contents through a defect in the abdominal wall. However, the patient’s history of previous abdominal surgery makes adhesions a more likely cause.
While regular opioid use can lead to constipation, it is not a cause of obstruction. In this case, the patient’s bilious vomiting and positive findings of abdominal tenderness and distension suggest intestinal obstruction rather than simple constipation.
Small bowel obstruction occurs when the small intestines are blocked, preventing the passage of food, fluids, and gas. The most common cause of this condition is adhesions, which can develop after previous surgeries, followed by hernias. Symptoms of small bowel obstruction include diffuse, central abdominal pain, nausea and vomiting (often bilious), constipation, and abdominal distension. Tinkling bowel sounds may also be present in early stages of obstruction. Abdominal x-ray is typically the first-line imaging for suspected small bowel obstruction, showing distended small bowel loops with fluid levels. CT is more sensitive and considered the definitive investigation, particularly in early obstruction. Management involves initial steps such as NBM, IV fluids, and nasogastric tube with free drainage. Some patients may respond to conservative management, but others may require surgery.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 6
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Crohn's disease is characterized by which of the following features? Please select the ONE most characteristic feature from the list provided.
Your Answer: Skip lesions
Explanation:Comparison of Crohn’s Disease and Ulcerative Colitis
Crohn’s disease and ulcerative colitis are two types of inflammatory bowel disease that affect the gastrointestinal tract. Crohn’s disease can occur anywhere along the GI tract, while ulcerative colitis typically only affects the large intestine.
One characteristic of Crohn’s disease is the presence of skip lesions, or areas of inflammation discontinuity. The colon wall may also appear thickened and have a cobblestone appearance. In contrast, ulcerative colitis shows continuous inflammation in affected areas, with a thinner colon wall and ulcers limited to the mucous lining of the large intestine.
Both diseases can cause rectal bleeding, but it is more common in ulcerative colitis. Other symptoms of ulcerative colitis include frequent stools and mucus discharge from the rectum, while Crohn’s disease often presents with prolonged diarrhea and abdominal pain.
Pseudopolyps, or benign lesions originating from the mucosa, can occur in both diseases but are more prevalent in ulcerative colitis. Crypt abscess formation, characterized by intense infiltration of the mucosa and submucosa with neutrophils and crypt abscesses, is a hallmark of ulcerative colitis.
Management of these diseases includes medical therapy, endoscopy, and surgery for complications such as bleeding or obstruction. Understanding the differences between Crohn’s disease and ulcerative colitis is crucial for proper diagnosis and treatment.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 7
Incorrect
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A 28-year-old woman presents with bloody diarrhoea that has been ongoing for six weeks. She reports passing 3-4 loose stools per day with small amounts of blood. She feels lethargic but has no fever or significant abdominal pain. A colonoscopy reveals inflammatory changes in the ascending, transverse, and descending colon consistent with ulcerative colitis. Her blood work shows Hb of 142 g/L, platelets of 323 * 109/L, WBC of 8.1 * 109/L, and CRP of 22 mg/L. What is the most appropriate first-line medication for inducing remission?
Your Answer: Rectal aminosalicylate
Correct Answer: Oral aminosalicylate + rectal aminosalicylate
Explanation:For a patient experiencing a mild to moderate flare-up of ulcerative colitis that extends beyond the left-sided colon, it is recommended to supplement rectal aminosalicylates with oral aminosalicylates. This is because enemas have limited reach and may not effectively treat the disease outside of their range.
Ulcerative colitis can be managed through inducing and maintaining remission. The severity of the condition is classified as mild, moderate, or severe based on the number of stools and presence of systemic upset. Treatment for mild-to-moderate cases of proctitis involves using topical aminosalicylate, while proctosigmoiditis and left-sided ulcerative colitis may require a combination of oral and topical medications. Extensive disease may require a high-dose oral aminosalicylate and topical treatment. Severe colitis should be treated in a hospital with intravenous steroids or ciclosporin. Maintaining remission can involve using a low maintenance dose of an oral aminosalicylate or oral azathioprine/mercaptopurine. Methotrexate is not recommended, but probiotics may prevent relapse in mild to moderate cases.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 8
Incorrect
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A 49-year-old woman with poorly controlled type 1 diabetes mellitus presents with complaints of bloating and vomiting after meals. She reports that her blood glucose levels have been fluctuating more frequently lately. Which medication is most likely to provide relief for her symptoms?
Your Answer: Cyclizine
Correct Answer: Metoclopramide
Explanation:Gastric emptying dysfunction can cause upper gastrointestinal symptoms and disrupt glucose control. Metoclopramide, a pro-kinetic medication, can help improve gastric emptying and alleviate these issues.
Diabetes can cause peripheral neuropathy, which typically results in sensory loss rather than motor loss. This often affects the lower legs first due to the length of the sensory neurons supplying this area, resulting in a glove and stocking distribution. Painful diabetic neuropathy is a common issue that can be managed with drugs such as amitriptyline, duloxetine, gabapentin, or pregabalin. If these drugs do not work, tramadol may be used as a rescue therapy, and topical capsaicin may be used for localized neuropathic pain. Pain management clinics may also be helpful for patients with resistant problems.
Gastrointestinal autonomic neuropathy can cause gastroparesis, which can lead to erratic blood glucose control, bloating, and vomiting. This can be managed with prokinetic agents such as metoclopramide, domperidone, or erythromycin. Chronic diarrhea, which often occurs at night, is another potential complication of diabetic neuropathy. Gastroesophageal reflux disease can also occur due to decreased lower esophageal sphincter pressure.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 9
Correct
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You perform a home visit on an 80-year-old man, whose son is concerned by increased confusion in the last 3 days. His past medical history includes mild cognitive impairment, ischaemic heart disease and diverticular disease.
When you arrive, he reports feeling well and denies any recent health problems. However, you suspect he may not be giving an accurate account of his health as he appears slightly confused about his surroundings.
During the examination, he complains of mild lower abdominal discomfort. On deep palpation, you feel a fullness in the left iliac fossa. All observations are within normal limits.
What is the most likely cause of this man's confusion?Your Answer: Constipation
Explanation:In elderly patients, constipation is a frequent cause of heightened confusion and is the most probable reason for the symptoms described in this case. The patient’s confusion, slight abdominal discomfort, and palpable mass can all be attributed to constipation. While a colonic tumor could explain the discomfort and fullness on palpation, it is unlikely that its metastases would cause a sudden increase in confusion without a prior diagnosis. Constipation is a common presentation in elderly patients, and it is important to consider it as a potential cause of confusion. Mild cognitive impairment does not typically progress rapidly to dementia with disorientation to time and place. A urinary tract infection or acute diverticulitis would not account for the fullness in the left iliac fossa or the other symptoms described.
Acute confusional state, also known as delirium or acute organic brain syndrome, is a condition that affects up to 30% of elderly patients admitted to hospital. It is more common in patients over the age of 65, those with a background of dementia, significant injury, frailty or multimorbidity, and those taking multiple medications. The condition is often triggered by a combination of factors, such as infection, metabolic imbalances, change of environment, and underlying medical conditions.
The symptoms of acute confusional state can vary widely, but may include memory disturbances, agitation or withdrawal, disorientation, mood changes, visual hallucinations, disturbed sleep, and poor attention. Treatment involves identifying and addressing the underlying cause, modifying the patient’s environment, and using sedatives such as haloperidol or olanzapine. However, managing the condition can be challenging in patients with Parkinson’s disease, as antipsychotics can worsen Parkinsonian symptoms. In such cases, careful reduction of Parkinson medication may be helpful, and atypical antipsychotics such as quetiapine and clozapine may be preferred for urgent treatment.
Overall, acute confusional state is a complex condition that requires careful management and individualized treatment. By addressing the underlying causes and providing appropriate sedation, healthcare professionals can help patients recover from this condition and improve their overall quality of life.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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Question 10
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A 55-year-old man visits the clinic with concerns about his worsening haemorrhoids. He reports having to manually push them back in after bowel movements.
Which class of haemorrhoids is most likely present?Your Answer: Grade III
Explanation:Understanding the Grading System for Hemorrhoids
Hemorrhoids are a common condition that affects many people. To help diagnose and treat this condition, clinicians use a grading system to classify the severity of the hemorrhoids. The grading system proposed by Banov et al. in 1985 is the most commonly used system.
Grade I hemorrhoids are the mildest form and only project into the anal canal. They often bleed but do not prolapse. Grade II hemorrhoids may protrude beyond the anal verge with straining or defecating, but reduce spontaneously when straining ceases. Grade III hemorrhoids protrude spontaneously or with straining and require manual reduction. Grade IV hemorrhoids are the most severe and chronically prolapse. They cannot be reduced and may present with acute thrombosis or strangulation. These lesions usually contain both internal and external components.
The grading system helps clinicians correlate symptoms with therapeutic approaches. For example, grade I and II hemorrhoids may be treated with conservative measures such as dietary changes and topical medications. Grade III and IV hemorrhoids may require more invasive treatments such as rubber band ligation or surgery.
In conclusion, understanding the grading system for hemorrhoids is important for both patients and clinicians. It helps guide treatment decisions and ensures the best possible outcome for those affected by this condition.
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This question is part of the following fields:
- Gastroenterology/Nutrition
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