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vomiting

Practice targeted AMC-style multiple-choice questions on vomiting.

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Post-embolization arteriogram showing coiled aneurysm (indicated by yellow arrows) of the posteriorcerebral artery with a residual aneurysmal sac.
Image by Promod Pillai, Aftab Karim, Anil Nanda CC BY 2.0 · Source

A 72-year-old woman with a history of well-controlled hypertension presents with sudden-onset headache and vomiting. Neurological exam reveals mild neck stiffness but is otherwise normal. A CT angiogram reveals a posterior communicating artery aneurysm, which was subsequently coiled. The image shows a post-coiling angiogram. 24 hours post-procedure, she develops worsening headache and new-onset right-sided weakness. What is the MOST appropriate next step?

A. Start aspirin and clopidogrel
B. Increase the dose of her antihypertensive medication
C. Perform lumbar puncture
D. Repeat CT angiogram
E. Administer nimodipine
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). Based on this finding, what is the most appropriate next step in management?

A. Upper gastrointestinal endoscopy
B. Pneumatic or hydrostatic enema reduction
C. Immediate surgical exploration
D. Abdominal CT scan with contrast
E. Observation with serial abdominal exams
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Synchronous multiple small bowel intussusceptions in an adult with blue rubber bleb naevus syndrome. CT scan of abdomen showing i) multiple intussusceptions demonstrating doughnut signs (white arrows), intussusceptiens [A], intussusceptum [B], distended loop of small

bowel [C] and ii) haemangioma of right quadratus lumborum muscle (dark arrow).
Image by Lee C, Debnath D, Whitburn T, Farrugia M, Gonzalez F CC BY 2.0 · Source

A 38-year-old male presents to the emergency department with a 2-day history of intermittent abdominal pain, nausea, and vomiting. He reports passing dark, tarry stools. He has a known history of multiple cutaneous hemangiomas since childhood. On examination, his abdomen is distended and tender to palpation, particularly in the periumbilical region. Bowel sounds are hyperactive. Vitals are: HR 110 bpm, BP 100/60 mmHg, RR 20 breaths/min, SpO2 97% on room air, Temp 37.2°C. A CT scan of the abdomen and pelvis is performed, and a representative image is shown. Given the clinical presentation and imaging findings, what is the MOST appropriate initial management strategy?

A. Endoscopic evaluation with possible cauterization
B. Initiation of high-dose corticosteroids
C. Administration of intravenous antibiotics
D. Surgical exploration
E. Observation with serial abdominal examinations
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset, intermittent, severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. Vitals are stable. An ultrasound is performed, shown above. Based on the clinical presentation and the provided image, what is the most appropriate next step in the management of this patient?

A. Urgent surgical consultation for laparotomy
B. Administration of broad-spectrum antibiotics
C. CT scan of the abdomen and pelvis
D. Admission for observation and serial abdominal exams
E. Air enema reduction
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents to the emergency department with a 2-week history of progressively worsening non-bilious vomiting, which has become projectile over the past few days. His parents report he is feeding eagerly but vomits most feeds shortly after completion. He has had fewer wet nappies than usual and appears more lethargic. On examination, he is irritable but consolable. His weight is below the 3rd percentile, having dropped from the 10th percentile at birth. Vital signs are: Temperature 36.8°C, Heart Rate 155 bpm, Respiratory Rate 40 bpm, Blood Pressure 85/50 mmHg, Oxygen Saturation 98% on room air. Capillary refill time is 3 seconds. Abdominal examination reveals a soft, non-distended abdomen with active bowel sounds; no palpable masses are appreciated. Initial blood gas shows pH 7.52, pCO2 40 mmHg, Bicarbonate 32 mmol/L, Na+ 132 mmol/L, K+ 3.0 mmol/L, Cl- 88 mmol/L. A point-of-care ultrasound was performed, and the image provided was obtained. Considering the clinical presentation, the laboratory results, and the findings demonstrated in the image, which of the following represents the most appropriate immediate therapeutic intervention?

A. Intravenous administration of 5% dextrose in 0.45% sodium chloride.
B. Oral rehydration therapy with an electrolyte solution.
C. Urgent surgical consultation for pyloromyotomy without prior fluid resuscitation.
D. Placement of a nasogastric tube for continuous gastric drainage.
E. Intravenous administration of 0.9% sodium chloride with added potassium chloride.
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with intermittent abdominal pain, vomiting, and currant jelly stools. An ultrasound is performed, revealing the finding shown. What is the MOST appropriate next step in the management of this patient?

A. Appendectomy
B. Exploratory laparotomy
C. Air enema
D. Stool culture
E. Observation and intravenous fluids
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 5-week-old male presents with projectile vomiting. Ultrasound (shown). What electrolyte abnormality is MOST likely?

A. Hyperchloremic metabolic acidosis
B. Hyperkalemia
C. Hyponatremia
D. Hypophosphatemia
E. Hypochloremic metabolic alkalosis
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents to the emergency department with a 12-hour history of sudden onset, severe, colicky abdominal pain, drawing his legs up, and non-bilious vomiting. His parents report he has been listless between episodes and had a small amount of red jelly-like stool earlier. Vitals: T 37.2°C, HR 110, RR 24, BP 95/60, Sats 98% on air. Abdominal examination reveals tenderness in the right upper quadrant and a palpable mass. Bowel sounds are diminished. A point-of-care ultrasound is performed. Based on the clinical presentation and the findings demonstrated in the provided ultrasound image, what is the most appropriate initial management step for this patient?

A. Initiate intravenous antibiotics and observe for improvement.
B. Proceed directly to urgent surgical exploration.
C. Attempt pneumatic or hydrostatic reduction under fluoroscopic guidance.
D. Administer opioid analgesia and arrange for outpatient follow-up.
E. Obtain a contrast-enhanced CT scan of the abdomen and pelvis.
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Acute cholecystitis with gallbladder wall thickening, a large gallstone, and a large gallbladder
Image by James Heilman, MD CC BY-SA 4.0 · Source

A 62-year-old woman presents to the emergency department with a 2-day history of right upper quadrant abdominal pain, nausea, and vomiting. She reports that the pain started gradually but has become increasingly severe and constant. She denies any fever or chills. Her past medical history is significant for hypertension and hyperlipidemia, both well-controlled with medications. On physical examination, she is afebrile, with a heart rate of 92 bpm, blood pressure of 140/85 mmHg, and an oxygen saturation of 98% on room air. Abdominal examination reveals marked tenderness to palpation in the right upper quadrant with guarding. Murphy's sign is positive. The provided image was obtained. Which of the following is the MOST appropriate next step in the management of this patient?

A. Initiate intravenous antibiotics and observe
B. Perform an endoscopic retrograde cholangiopancreatography (ERCP)
C. Order a hepatobiliary iminodiacetic acid (HIDA) scan
D. Administer oral analgesics and discharge with outpatient follow-up
E. Surgical consultation for cholecystectomy
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with intermittent abdominal pain and vomiting. Stool examination reveals a positive occult blood test. An ultrasound is performed, as shown. What is the MOST appropriate next step in management?

A. Air enema
B. Appendectomy
C. Laparotomy
D. Stool culture
E. IV antibiotics
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 35-year-old presents with colicky abdominal pain and vomiting. An X-ray is performed. What is the MOST likely finding on subsequent CT imaging?

A. Splenic infarct
B. Pneumatosis intestinalis
C. Free intraperitoneal air
D. Mesenteric stranding
E. Transition point with proximal bowel dilatation
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A 62-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of poorly controlled hypertension and is currently on no medications. On examination, he is drowsy but arousable, with a blood pressure of 210/120 mmHg and a heart rate of 90 bpm. Neurological examination reveals right-sided hemiparesis and a left gaze preference. A CT scan of the head shows a large hyperdense area in the left basal ganglia with surrounding edema. What is the most appropriate initial management for this patient?

A. Immediate surgical evacuation of the hematoma
B. Intravenous labetalol to lower blood pressure
C. Oral antihypertensive therapy to gradually lower blood pressure
D. Intravenous mannitol to reduce intracranial pressure
E. Intravenous thrombolysis to dissolve the clot
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Acute cholecystitis with gallbladder wall thickening, a large gallstone, and a large gallbladder
Image by James Heilman, MD CC BY-SA 4.0 · Source

A 58-year-old woman with poorly controlled diabetes presents with severe RUQ pain, fever, and vomiting for 3 days. The provided CT was performed. What is the MOST appropriate initial management strategy?

A. Urgent cholecystectomy
B. Oral ursodeoxycholic acid
C. IV antibiotics and bowel rest
D. Percutaneous cholecystostomy tube placement
E. ERCP with stone extraction
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 4-week-old male presents with non-bilious emesis. An upper GI series is performed (image shown). What acid-base abnormality is MOST likely?

A. Respiratory alkalosis
B. Hyperchloremic metabolic acidosis
C. Normal acid-base status
D. Respiratory acidosis
E. Hypochloremic metabolic alkalosis
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents with increasing frequency of non-bilious vomiting after feeds for the past week. He is otherwise well, afebrile, and has wet nappies. On examination, he is alert and interactive. Abdominal examination is unremarkable. Vitals are stable. You order an ultrasound, which is shown. Based on the clinical presentation and the provided image, what is the most appropriate immediate next step in management?

A. Obtain an upper gastrointestinal barium study.
B. Discharge home with advice on feeding techniques and follow-up.
C. Proceed directly to surgical pyloromyotomy.
D. Initiate intravenous fluid resuscitation and correct electrolyte abnormalities.
E. Prescribe a proton pump inhibitor and trial smaller, more frequent feeds.
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An incarcerated inguinal hernia as seen on CT
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 65-year-old male presents with groin pain and vomiting. The provided image was taken. What is the most appropriate next step in management?

A. Discharge with stool softeners
B. Administer intravenous antibiotics
C. Apply ice packs to the groin
D. Start a clear liquid diet
E. Surgical consultation for possible bowel resection
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 4-week-old male presents with persistent non-bilious vomiting after feeding. He is mildly dehydrated, but otherwise active. An ultrasound is performed, as shown. What is the MOST likely acid-base disturbance?

A. Metabolic acidosis
B. Normal acid-base balance
C. Respiratory acidosis
D. Respiratory alkalosis
E. Metabolic alkalosis
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A 6-month-old baby has abdominal swelling and vomiting. An abdominal X-ray shows a 'double bubble' sign. What is the most likely diagnosis?

A. Pyloric stenosis
B. Duodenal atresia
C. Meconium ileus
D. Intussusception
E. Malrotation with volvulus.
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A neonate, born at 38 weeks gestation, presents with bilious vomiting starting 12 hours after birth. Antenatal ultrasound revealed polyhydramnios. On examination, the baby is active and has a distended upper abdomen but a scaphoid lower abdomen. An abdominal X-ray shows a 'double bubble' sign. Which of the following is the most appropriate next step in the management of this neonate, considering potential associated complications?

A. Immediately perform a contrast enema to rule out meconium ileus as a cause of the obstruction.
B. Initiate intravenous fluids, nasogastric decompression, and prepare for surgical intervention after stabilization.
C. Begin feeds with a hydrolysed formula to assess tolerance and rule out milk protein allergy.
D. Start the neonate on broad-spectrum antibiotics to cover potential bacterial translocation.
E. Perform an upper gastrointestinal endoscopy to visualize the obstruction and obtain biopsies.
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with a 12-hour history of intermittent, severe abdominal pain, drawing his legs up to his chest. He has vomited several times. His vital signs are stable: HR 110, BP 95/60, RR 24, Temp 37.2°C. On examination, he is irritable but comfortable between episodes of pain. His abdomen is soft but mildly distended. A focused abdominal ultrasound is performed, yielding the image provided. Based on the clinical presentation and the findings shown, which of the following non-surgical interventions is typically attempted first to resolve the underlying issue?

A. Nasogastric tube insertion for decompression and bowel rest
B. Pneumatic reduction under fluoroscopic guidance
C. Administration of intravenous opioids for pain control followed by observation
D. Intravenous fluid resuscitation and broad-spectrum antibiotics
E. Urgent surgical exploration and manual reduction
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A 40-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He describes the headache as the worst he has ever experienced. He has a history of hypertension but is otherwise healthy. On examination, he is alert but in distress, with a blood pressure of 180/110 mmHg, heart rate of 90 bpm, and respiratory rate of 18 breaths per minute. Neurological examination reveals neck stiffness but no focal neurological deficits. A CT scan of the head shows no acute intracranial hemorrhage. What is the most appropriate next step in the management of this patient?

A. Lumbar puncture
B. Administer analgesics and observe
C. Start antihypertensive therapy
D. MRI of the brain
E. Repeat CT scan with contrast
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 4-week-old male presents with projectile vomiting after feeding. He is irritable and appears mildly dehydrated. An abdominal exam reveals a palpable, olive-shaped mass in the epigastrium. An upper GI contrast study is performed, and relevant images are shown. What is the MOST appropriate initial step in managing this patient's electrolyte imbalance?

A. Initiate feeding with a hypoallergenic formula
B. Administer intravenous normal saline bolus
C. Administer intravenous sodium bicarbonate
D. Administer oral rehydration solution
E. Administer intravenous potassium chloride
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 3-week-old male infant presents with persistent, non-bilious projectile vomiting after each feed. He appears hungry and eagerly accepts the bottle, but vomits shortly after. On examination, mild dehydration is noted. An abdominal X-ray is ordered, the relevant image is attached. What is the MOST appropriate next step in management?

A. Perform an upper endoscopy
B. Administer intravenous ondansetron
C. Initiate a course of erythromycin
D. Surgical pyloromyotomy
E. Start a trial of thickened feeds
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A 67-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on amlodipine. On examination, he is drowsy but arousable, with a blood pressure of 210/120 mmHg and a heart rate of 90 bpm. Neurological examination reveals a left-sided hemiparesis and a right-sided facial droop. A CT scan of the head shows a hyperdense lesion in the right basal ganglia with surrounding edema. Which of the following is the most appropriate initial management step?

A. Intravenous labetalol to lower blood pressure
B. Oral aspirin to prevent further clot formation
C. Immediate surgical evacuation of the hematoma
D. Intravenous alteplase for thrombolysis
E. Intravenous mannitol to reduce intracranial pressure
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A neonate is born at term following an uneventful pregnancy. Immediately after birth, the baby develops bilious vomiting. Abdominal examination reveals epigastric distension, but the rest of the abdomen is scaphoid. An abdominal X-ray is performed. Which of the following findings on the abdominal X-ray would be most consistent with the likely diagnosis?

A. Double-bubble sign
B. Multiple air-fluid levels throughout the abdomen
C. Free air under the diaphragm
D. Pneumatosis intestinalis
E. Ground glass appearance
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 68-year-old male presents to the ED with colicky abdominal pain, nausea, and vomiting. He reports no bowel movements for 3 days. His abdomen is distended and tender. An X-ray is performed. Given the findings, what is the MOST likely underlying cause of this patient's condition?

A. Hernia
B. Volvulus
C. Adhesions from prior surgery
D. Intussusception
E. Diverticulitis
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset, intermittent, severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). Based on the clinical presentation and the image, what is the most appropriate next step in management?

A. Pneumatic reduction under fluoroscopy
B. Urgent surgical exploration
C. CT scan of the abdomen and pelvis
D. Admission for observation and IV fluids
E. Administration of broad-spectrum antibiotics
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Giant hiatal hernia, CT image. 63 year old man.
Image by Jmarchn CC BY 4.0 · Source

A 63-year-old male presents with postprandial vomiting and persistent retrosternal discomfort. He reports feeling full quickly after eating only small amounts. An abdominal CT scan is performed, the axial view is shown. What is the MOST likely underlying mechanism contributing to this patient's symptoms?

A. Gastric malignancy
B. Pyloric stenosis
C. Esophageal dysmotility
D. Mechanical obstruction of the gastric outflow
E. Increased gastric acid production
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Ultrasonographic picture taken from a patient with left ureteral stone with hydronephrosis, created in Taiwan
Image by morning2k CC BY 2.5 · Source

A 38-year-old male presents to the emergency department complaining of sudden onset, severe left flank pain that radiates to his groin. He reports associated nausea and vomiting. He denies any fever, dysuria, or hematuria. His vital signs are stable: blood pressure 120/80 mmHg, heart rate 88 bpm, respiratory rate 16 breaths/min, and temperature 37.0°C. A urinalysis reveals microscopic hematuria. A point-of-care ultrasound is performed, and the image is shown. Given the clinical presentation and ultrasound findings, what is the MOST appropriate next step in management?

A. Consult nephrology for possible percutaneous nephrostomy
B. Insert a Foley catheter to monitor urine output
C. Prescribe oral antibiotics for presumed pyelonephritis
D. Order a non-contrast CT scan of the abdomen and pelvis
E. Administer intravenous ketorolac and discharge with outpatient urology follow-up
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents to the emergency department with a 2-week history of progressively worsening non-bilious vomiting, which has become projectile over the past few days. His parents report he is feeding eagerly but vomits most feeds shortly after completion. He has had fewer wet nappies than usual and appears more lethargic. On examination, he is irritable but consolable. His weight is below the 3rd percentile, having dropped from the 10th percentile at birth. Vital signs are: Temperature 36.8°C, Heart Rate 155 bpm, Respiratory Rate 40 bpm, Blood Pressure 85/50 mmHg, Oxygen Saturation 98% on room air. Capillary refill time is 3 seconds. Abdominal examination reveals a soft, non-distended abdomen with active bowel sounds; no palpable masses are appreciated. Initial blood gas shows pH 7.52, pCO2 40 mmHg, Bicarbonate 32 mmol/L, Na+ 132 mmol/L, K+ 3.0 mmol/L, Cl- 88 mmol/L. A point-of-care ultrasound was performed, and the image provided was obtained. Considering the clinical presentation and the findings demonstrated in the image, what is the most appropriate immediate next step in the management of this infant?

A. Administer intravenous ondansetron and observe for improvement in vomiting.
B. Discharge home with instructions for smaller, more frequent feeds and review by the general practitioner in 24 hours.
C. Insert a nasogastric tube for continuous drainage and commence total parenteral nutrition.
D. Obtain an urgent upper gastrointestinal contrast study to confirm the diagnosis and assess for malrotation.
E. Initiate intravenous fluid resuscitation with 0.9% sodium chloride and potassium chloride supplementation, and arrange urgent surgical consultation.
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 75-year-old female presents to the emergency department with a 24-hour history of worsening colicky abdominal pain, nausea, and multiple episodes of bilious vomiting. She reports no passage of flatus or stool for the past 18 hours. Her past medical history includes an open appendectomy 30 years ago and a hysterectomy 10 years ago. On examination, she is afebrile, heart rate 92 bpm, blood pressure 130/80 mmHg, respiratory rate 18/min, oxygen saturation 98% on room air. Her abdomen is distended and diffusely tender to palpation, with high-pitched tinkling bowel sounds on auscultation. A plain abdominal X-ray series, including the image provided, was obtained. Considering the patient's clinical presentation and the findings demonstrated in the provided image, which of the following represents the most appropriate immediate next step in her management?

A. Administer a large volume enema
B. Administer broad-spectrum intravenous antibiotics
C. Order a CT scan of the abdomen and pelvis with intravenous contrast
D. Proceed directly to exploratory laparotomy
E. Insert a nasogastric tube for decompression
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 5-week-old male presents with non-bilious projectile vomiting after each feed for the past week. He is alert but appears dehydrated. An ultrasound is performed, as shown. What electrolyte abnormality is MOST likely present?

A. Hyperchloremic metabolic acidosis
B. Hyponatremia
C. Normal electrolytes
D. Hypochloremic metabolic alkalosis
E. Hyperkalemia
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 5-week-old male presents with non-bilious projectile vomiting. An ultrasound is performed (shown). What acid-base disturbance is MOST likely?

A. Hypochloremic metabolic alkalosis
B. Hyperchloremic metabolic acidosis
C. Respiratory acidosis
D. Respiratory alkalosis
E. Normal acid-base balance
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old infant presents with a 1-week history of increasing frequency of non-bilious, projectile vomiting occurring shortly after feeds. He has lost some weight since his last check-up. Examination is otherwise unremarkable. An ultrasound is performed, shown in the image. Based on the clinical presentation and the provided image, which of the following electrolyte abnormalities is the most likely consequence if this condition remains untreated?

A. Hypernatremic metabolic acidosis
B. Hyponatremic respiratory alkalosis
C. Hypochloremic metabolic alkalosis
D. Hypokalemic respiratory acidosis
E. Hypercalcemic metabolic alkalosis
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 3-week-old male presents with projectile vomiting after each feed. He appears hungry and eagerly feeds, but vomits shortly after. An abdominal X-ray is ordered, the result of which is shown. What is the most appropriate next step in management?

A. Surgical pyloromyotomy
B. Upper endoscopy with biopsy
C. Start erythromycin
D. Administer ondansetron
E. Trial of thickened feeds
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male infant presents with a 1-week history of progressively worsening non-bilious vomiting, often projectile, occurring shortly after feeds. His parents report he is constantly hungry and irritable but has had poor weight gain. On examination, he is alert but appears thin. Vital signs are stable. Abdominal examination is soft, non-tender, with no palpable mass. An abdominal ultrasound is performed, the image of which is shown. Considering the clinical presentation and the findings depicted, what is the most appropriate initial management strategy?

A. Referral to a paediatric gastroenterologist for further investigation
B. Discharge home with advice on smaller, more frequent feeds
C. Urgent upper gastrointestinal contrast study
D. Surgical pyloromyotomy after fluid and electrolyte correction
E. Trial of antiemetic medication and thickened feeds
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 5-week-old male presents with projectile vomiting after feeds. He is irritable and appears dehydrated. An upper GI contrast study is performed, with relevant images attached. What is the MOST likely underlying cause?

A. Malrotation with volvulus
B. Duodenal atresia
C. Gastroesophageal reflux
D. Hypertrophy of the pyloric sphincter
E. Esophageal stricture
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A 45-year-old woman presents to the emergency department with acute onset of severe right upper quadrant abdominal pain radiating to the back, accompanied by nausea and vomiting. She has a history of gallstones but no previous surgeries. On examination, she is febrile with a temperature of 38.5°C, her heart rate is 110 bpm, and she has tenderness in the right upper quadrant with a positive Murphy's sign. Laboratory tests reveal elevated white blood cell count, elevated liver enzymes, and elevated serum amylase. An abdominal ultrasound shows gallstones and a thickened gallbladder wall. Which of the following is the most appropriate next step in management?

A. Intravenous antibiotics and cholecystectomy
B. Magnetic resonance cholangiopancreatography (MRCP)
C. Endoscopic retrograde cholangiopancreatography (ERCP)
D. Observation and pain management
E. Percutaneous cholecystostomy
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 72-year-old male presents with abdominal distension, vomiting, and inability to pass flatus for 48 hours. He has a history of prior bowel resection. Examination reveals a tympanitic abdomen and tenderness to palpation. His vitals are stable. An abdominal X-ray is performed, as shown. Considering the clinical context and the radiographic findings, what is the MOST likely underlying cause of this presentation?

A. Post-surgical adhesions
B. Inflammatory bowel disease stricture
C. Volvulus
D. Hernia
E. Malignancy
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 75-year-old female presents to the emergency department with a 24-hour history of worsening colicky abdominal pain, nausea, and multiple episodes of bilious vomiting. She reports no passage of flatus or stool for the past 18 hours. Her past medical history includes an open appendectomy 30 years ago and a hysterectomy 10 years ago. On examination, she is afebrile, heart rate 92 bpm, blood pressure 130/80 mmHg, respiratory rate 18/min, oxygen saturation 98% on room air. Her abdomen is distended and diffusely tender to palpation, with high-pitched tinkling bowel sounds on auscultation. A plain abdominal X-ray series, including the image provided, was obtained. Given the clinical presentation and the findings demonstrated in the provided image, which of the following is the most appropriate *next* investigation to guide definitive management?

A. Repeat plain abdominal X-ray series in 6 hours
B. Upper endoscopy
C. Barium enema
D. MRI of the abdomen
E. CT scan of the abdomen and pelvis with intravenous contrast
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 72-year-old male with a history of diverticulitis presents with severe abdominal pain, vomiting, and inability to pass flatus for 24 hours. An upright abdominal X-ray is performed. Based on the image, what is the MOST likely underlying cause?

A. Hernia
B. Volvulus
C. Intussusception
D. Adhesions
E. Neoplasm
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 72-year-old male presents with abdominal distension, vomiting, and inability to pass flatus for 48 hours. He has a history of prior bowel resection. Examination reveals a tympanitic abdomen and tenderness to palpation. His vitals are stable. An abdominal X-ray is performed, as shown. Considering the clinical context and the radiographic findings, what is the primary purpose of inserting a nasogastric tube in this patient?

A. Obtaining a sample of gastric contents for analysis.
B. Administering oral contrast for further imaging.
C. Decompressing the dilated bowel loops and reducing vomiting.
D. Providing nutritional support to the patient.
E. Facilitating the passage of flatus.
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Hypertrophic pyloric stenosis
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A 4-week-old male presents with projectile vomiting after feeding. He is irritable and appears dehydrated. An upper GI series is performed, as shown. After addressing immediate concerns, what is the MOST appropriate next step?

A. Perform an upper endoscopy with biopsy
B. Administer intravenous antibiotics
C. Surgical pyloromyotomy
D. Start H2 receptor antagonist therapy
E. Initiate a trial of thickened feeds
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is afebrile with a soft but slightly distended abdomen. An ultrasound is performed (image provided). Based on the clinical presentation and the image findings, what is the most appropriate next step in the management of this patient?

A. Pneumatic reduction under fluoroscopy
B. Admission for observation and IV fluids
C. Discharge home with pain relief
D. CT abdomen and pelvis
E. Urgent surgical exploration
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset intermittent severe abdominal pain, vomiting, and lethargy. On examination, he is pale and has a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). Based on this finding, what is the most appropriate next step in management?

A. Pneumatic or hydrostatic enema reduction
B. Immediate surgical exploration
C. Abdominal CT scan with contrast
D. Observation with IV fluids and analgesia
E. Barium swallow study
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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes CC BY-SA 4.0 · Source

A 6-week-old male presents with projectile vomiting after feeds. He is otherwise well-appearing, with normal vital signs. An abdominal ultrasound is performed (image attached). What is the MOST appropriate next step in management?

A. Initiate a proton pump inhibitor
B. Surgical consultation for pyloromyotomy
C. Reassurance and close follow-up
D. Upper endoscopy with biopsy
E. Trial of thickened feeds
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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 72-year-old male presents with abdominal distension, vomiting, and inability to pass flatus for 48 hours. He has a history of prior bowel resection. Examination reveals a tympanitic abdomen and tenderness to palpation. His vitals are stable. An abdominal X-ray is performed, as shown. What is the MOST appropriate next step in the management of this patient?

A. Insert a nasogastric tube and administer intravenous fluids
B. Administer a Fleet enema
C. Order a CT scan of the abdomen and pelvis with intravenous contrast
D. Administer oral contrast and repeat abdominal X-ray in 6 hours
E. Perform a flexible sigmoidoscopy to rule out sigmoid volvulus
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A 72-year-old man with a history of a reducible inguinal hernia presents to the emergency department with severe groin pain and a firm, tender mass in the right inguinal region. He reports that he has been unable to reduce the hernia despite his usual maneuvers. He also reports nausea and vomiting for the past 6 hours. On examination, his vital signs are stable, but he appears uncomfortable. The mass in his groin is erythematous and exquisitely tender to palpation. Which of the following is the most appropriate next step in management?

A. Administration of intravenous antibiotics and observation
B. Surgical exploration
C. CT scan of the abdomen and pelvis with intravenous contrast
D. Attempt manual reduction with sedation and analgesia
E. Ultrasound of the groin to assess blood flow
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with sudden onset, intermittent, severe abdominal pain, vomiting, and lethargy. His vital signs are stable. On examination, he is pale. An abdominal ultrasound is performed, shown in the image. Based on the clinical presentation and imaging findings, what is the most appropriate next step in management?

A. Admission for intravenous fluids and observation
B. Urgent laparotomy for surgical reduction
C. Administer intravenous broad-spectrum antibiotics
D. Pneumatic reduction under fluoroscopic guidance
E. Obtain a CT scan of the abdomen and pelvis
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An ultrasound showing target sign which is a characteristic finding for intussusception on ultrasound, this ultrasound is for a 3 year old boy with intestinal intussusception.
Image by Frank Gaillard CC BY-SA 3.0 · Source

A 3-year-old boy presents with intermittent abdominal pain, vomiting, and currant jelly stools. An ultrasound is performed, revealing the image shown. What is the MOST appropriate next step in management?

A. Observation and supportive care
B. Surgical resection
C. IV antibiotics
D. Appendectomy
E. Air enema
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