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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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Upright X-ray demonstrating small bowel obstruction
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 68-year-old male presents with abdominal distension, obstipation, and vomiting. He has a history of prior abdominal surgery. An upright abdominal X-ray is performed. What is the MOST appropriate next step in management?

A. Colonoscopy
B. Surgical consultation
C. Barium enema
D. Stool softeners
E. Oral antibiotics
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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 previously healthy 3-year-old boy presents with colicky abdominal pain and non-bilious vomiting. Physical exam reveals a palpable abdominal mass in the RUQ. An ultrasound is performed, revealing the finding shown. What is the MOST likely lead point?

A. Polyp
B. Appendix
C. Lymphoma
D. Ileocolic valve
E. Meckel's diverticulum
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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 previously well 3-year-old boy presents to the emergency department with a 12-hour history of sudden onset, intermittent, severe, colicky abdominal pain, associated with non-bilious vomiting. Between episodes, he appears lethargic and pale. His vital signs are stable: HR 110, BP 90/60, RR 24, Temp 37.2. Abdominal examination reveals mild distension and tenderness, but no guarding or rebound. Bowel sounds are present. A point-of-care ultrasound is performed by the emergency physician. Considering the clinical presentation, the patient's current stable vital signs, and the specific findings demonstrated in the provided ultrasound image, which of the following represents the single most appropriate immediate next step in the management of this patient in an Australian tertiary paediatric centre?

A. Proceed directly to surgical exploration.
B. Attempt pneumatic or hydrostatic reduction under fluoroscopic guidance.
C. Obtain a CT scan of the abdomen and pelvis.
D. Administer IV fluids and observe for resolution.
E. Discharge home with pain relief and follow-up.
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 3-week-old male infant is brought to the emergency department by his parents due to persistent, non-bilious vomiting after each feeding for the past week. The vomiting has become increasingly forceful. The infant appears mildly dehydrated, and his weight has remained stable since birth. On examination, an olive-shaped mass is palpated in the epigastric region when the infant is not actively vomiting. An upper GI series is performed, and the image is shown. What is the most appropriate next step in the management of this patient?

A. Initiate a trial of thickened feeds
B. Surgical pyloromyotomy
C. Administer intravenous ondansetron and observe
D. Start erythromycin to stimulate gastric emptying
E. Perform an upper endoscopy with biopsy
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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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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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A 32-year-old man presents to the emergency department with severe abdominal pain that started suddenly 6 hours ago. The pain is located in the right lower quadrant and is associated with nausea and vomiting. On examination, he has rebound tenderness and guarding in the right lower quadrant. His temperature is 37.8°C, heart rate is 110 beats per minute, and blood pressure is 120/80 mmHg. A CT scan of the abdomen shows an inflamed appendix with surrounding fat stranding. What is the most appropriate next step in management?

A. Percutaneous drainage
B. Laparoscopic cholecystectomy
C. Appendectomy
D. Observation and repeat imaging
E. Intravenous antibiotics only
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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 abdominal distension, obstipation, and vomiting. He reports a history of multiple abdominal surgeries. An upright abdominal X-ray is performed. Based on the image, what is the MOST appropriate next step in management?

A. CT abdomen with contrast
B. Increase oral fluid intake
C. Stool softeners
D. Surgical consultation
E. Oral antibiotics
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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 sudden onset, intermittent, severe abdominal pain, vomiting, and lethargy. On examination, he is pale but haemodynamically stable. An abdominal ultrasound is performed. 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. Nasogastric tube insertion and IV fluids only
C. Air enema reduction
D. Observation with serial abdominal examinations
E. CT abdomen and pelvis
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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 persistent non-bilious vomiting after feeding. He appears hungry and has lost weight since birth. Examination reveals visible peristaltic waves across the abdomen. An abdominal ultrasound is performed, as shown. What is the most likely acid-base disturbance seen in this patient?

A. Metabolic alkalosis
B. Respiratory acidosis
C. Normal acid-base balance
D. Respiratory alkalosis
E. Metabolic acidosis
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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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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 vomiting and abdominal pain. An abdominal X-ray is performed. What is the MOST likely underlying cause?

A. Appendicitis
B. Diverticulitis
C. Volvulus
D. Adhesions from prior surgery
E. Pancreatitis
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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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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 infant presents to the emergency department with a 3-day history of non-bilious, projectile vomiting after each feed. He is otherwise well-appearing and afebrile. His mother reports that he is feeding well but seems increasingly hungry after vomiting. On examination, the infant is alert and active, with slightly dry mucous membranes. Abdominal examination is unremarkable, with no palpable masses. An ultrasound of the abdomen is performed, the image of which is shown. What is the most appropriate next step in the management of this patient?

A. Surgical consultation for pyloromyotomy
B. Administer intravenous ondansetron and observe
C. Upper gastrointestinal endoscopy with biopsy
D. Discharge home with instructions for frequent small-volume feeds
E. Initiate a trial of thickened feeds
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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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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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X-ray of hiatal hernia
Image by Ahmed Farhat, Daryn Towle CC BY 4.0 · Source

A 78-year-old male presents with persistent vomiting and epigastric pain. He reports a history of NSAID use for chronic arthritis. An X-ray is performed. Which of the following is the MOST likely complication associated with this finding?

A. Aortic dissection
B. Gastric volvulus
C. Pneumonia
D. Pericarditis
E. Esophageal stricture
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Ovarian Cyst
Image by James Heilman, MD CC BY-SA 3.0 · Source

A 28-year-old female presents to the ED with acute onset right lower quadrant pain. She reports nausea and vomiting. Her last menstrual period was 6 weeks ago, and she denies any vaginal bleeding. She is hemodynamically stable. A CT scan of the abdomen and pelvis is performed, with a relevant image shown. What is the MOST appropriate next step in the management of this patient?

A. Laparoscopic cystectomy
B. Immediate laparotomy
C. Expectant management with analgesia
D. Oral contraceptive pills
E. Serum CA-125 level
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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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A 25-year-old man presents to the emergency department with severe abdominal pain that started around his umbilicus and has now localized to the right lower quadrant. He has nausea and has vomited twice. On examination, he has tenderness and guarding in the right lower quadrant. His temperature is 37.8°C, and his white blood cell count is elevated. What is the most likely diagnosis?

A. Diverticulitis
B. Renal colic
C. Cholecystitis
D. Gastroenteritis
E. Acute appendicitis
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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 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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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 but haemodynamically stable. Abdominal examination reveals a palpable mass in the right upper quadrant. An ultrasound is performed (image provided). What is the most appropriate next step in management?

A. Administration of broad-spectrum antibiotics
B. Admission for observation and IV fluids
C. Abdominal CT scan with contrast
D. Immediate surgical exploration
E. Air or hydrostatic enema reduction
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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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Diverticular disease
Image by James Heilman, MD CC BY-SA 4.0 · Source

A 62-year-old male presents with acute onset of LLQ pain, fever, and vomiting. His WBC count is elevated. A CT scan of the abdomen and pelvis is performed. Based on the image, what is the most appropriate next step in management?

A. Flexible sigmoidoscopy
B. IV antibiotics and bowel rest
C. Stool softeners
D. Surgical resection
E. High-fiber diet
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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. Perform an upper gastrointestinal endoscopy.
B. Arrange for an urgent contrast-enhanced computed tomography scan of the abdomen and pelvis.
C. Discharge the patient home with oral analgesia and instructions to return if symptoms worsen.
D. Administer a high-dose osmotic laxative orally.
E. Proceed directly to exploratory laparotomy.
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 4-week-old male presents with persistent projectile vomiting after feeding. He is otherwise well-appearing. An upper GI series is performed, with relevant images attached. What acid-base disturbance is MOST likely present?

A. Respiratory acidosis
B. Normal acid-base balance
C. Hypochloremic metabolic alkalosis
D. Hyperchloremic metabolic acidosis
E. Respiratory alkalosis
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 3-week-old male infant is brought to the emergency department by his parents. They report that he has been experiencing projectile vomiting after every feed for the past week. The vomiting is non-bilious. He appears dehydrated, with sunken fontanelles and decreased skin turgor. His weight has decreased since his last check-up. An abdominal X-ray is ordered, the results of which are shown. What is the most appropriate next step in the management of this patient?

A. Surgical consultation for pyloromyotomy
B. Discharge home with oral rehydration solution
C. Perform an upper endoscopy
D. Start feeds with thickened formula
E. Administer intravenous antibiotics
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X-ray of hiatal hernia
Image by Ahmed Farhat, Daryn Towle CC BY 4.0 · Source

A 68-year-old male with a history of reflux presents with epigastric pain and vomiting. An X-ray is performed (shown). What is the most likely complication?

A. Gastric volvulus
B. Pericarditis
C. Esophageal stricture
D. Aortic dissection
E. Pneumonia
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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 definitive management strategy after initial fluid and electrolyte correction?

A. Trial of antiemetic medication
B. Laparoscopic pyloromyotomy
C. Barium meal study
D. Discharge home with feeding advice
E. Endoscopic balloon dilation
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Hypertrophic pyloric stenosis
Image by Adityagupta95 CC0 1.0 · Source

A 4-week-old male presents with persistent 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. Start a trial of hypoallergenic formula
B. Initiate intravenous antibiotics
C. Surgical pyloromyotomy
D. Administer antiemetics and observe
E. Upper endoscopy with biopsy
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A 45-year-old man presents to the emergency department with severe epigastric pain radiating to his back, which started suddenly a few hours ago. He has a history of alcohol use disorder and has been drinking heavily over the past week. On examination, he is diaphoretic and in distress. His vital signs show a blood pressure of 100/60 mmHg, heart rate of 110 bpm, respiratory rate of 22 breaths per minute, and temperature of 37.8°C. Laboratory tests reveal elevated serum lipase and amylase levels. An abdominal ultrasound shows no gallstones. Which of the following is the most appropriate initial management step for this patient?

A. Nasogastric tube insertion
B. Intravenous fluid resuscitation
C. Initiation of broad-spectrum antibiotics
D. Immediate surgical consultation
E. Oral rehydration therapy
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A 28-year-old woman presents to the emergency department with sudden onset of severe right lower abdominal pain. She reports nausea and vomiting but denies fever or urinary symptoms. Her last menstrual period was two weeks ago, and she is sexually active. On examination, she has tenderness in the right lower quadrant with guarding. A pelvic ultrasound reveals a 5 cm right ovarian cyst with free fluid in the pelvis. What is the most likely diagnosis?

A. Pelvic inflammatory disease
B. Ruptured ovarian cyst
C. Ovarian torsion
D. Ectopic pregnancy
E. Appendicitis
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A 65-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 antihypertensive medication. On examination, he is alert but in distress due to the headache. His blood pressure is 180/110 mmHg, heart rate is 90 bpm, and he has no focal neurological deficits. A CT scan of the head shows a subarachnoid hemorrhage. Which of the following is the most appropriate initial management step in this patient?

A. Administer nimodipine to prevent cerebral vasospasm
B. Perform immediate surgical clipping of the aneurysm
C. Administer mannitol to reduce intracranial pressure
D. Start intravenous labetalol to control blood pressure
E. Initiate anticonvulsant therapy to prevent seizures
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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 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, what is the most appropriate next step in the management of this patient?

A. Pneumatic reduction under fluoroscopy
B. Abdominal CT scan with contrast
C. Admission for observation and serial abdominal exams
D. Immediate surgical consultation for laparotomy
E. Administration of broad-spectrum intravenous antibiotics
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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, what is the most appropriate initial therapeutic intervention?

A. Intravenous fluid resuscitation and pain control
B. Administer a nasogastric tube for decompression and observe
C. Air or hydrostatic enema under fluoroscopic guidance
D. Obtain a CT scan of the abdomen
E. Urgent surgical exploration
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A 32-year-old woman presents to the emergency department with severe right lower quadrant abdominal pain, nausea, and vomiting. She reports her last menstrual period was 6 weeks ago. On examination, she has tenderness and guarding in the right lower quadrant. A urine pregnancy test is positive. What is the most appropriate next step in management?

A. Prescribe analgesics and discharge
B. Schedule an exploratory laparotomy
C. Perform a transvaginal ultrasound
D. Administer methotrexate
E. Order a CT scan of the abdomen
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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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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. Examination reveals a pale child with a soft abdomen. Vitals are stable. An abdominal ultrasound is performed (image provided). What is the most appropriate next step in management?

A. Admission for observation and serial abdominal exams
B. Intravenous antibiotics and fluid resuscitation
C. CT abdomen/pelvis with contrast
D. Pneumatic reduction under fluoroscopy
E. Urgent surgical exploration
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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 42-year-old male presents to the emergency department with a 3-day history of colicky abdominal pain, nausea, and vomiting. He reports that he has not had a bowel movement in 2 days and has noticed some blood in his vomit. He has a known history of multiple cutaneous hemangiomas since childhood. On examination, his abdomen is distended and tympanic, with tenderness to palpation in all quadrants. Bowel sounds are high-pitched and infrequent. Vitals are stable. A CT scan of the abdomen and pelvis is performed, and a representative image is shown. What is the MOST likely underlying cause of the patient's acute presentation, considering his history and the imaging findings?

A. Sigmoid volvulus
B. Bleeding from intestinal hemangiomas leading to intussusception
C. Appendicitis with perforation
D. Crohn's disease exacerbation
E. Adhesions from previous abdominal surgery
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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 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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