Partial Small Bowel Obstruction/ Complete Small Bowel Obstruction
MCQs with answers on Partial Small Bowel Obstruction/ Complete Small Bowel Obstruction as TEST/ Quiz
Partial Small Bowel Obstruction/ Complete Small Bowel Obstruction
Here is the MCQs test on Partial Small Bowel Obstruction/ Complete Small Bowel Obstruction as quiz or test. These MCQs are prepared to fulfil the requirement for all types of medical exams as NEET, USMLE, PLAB, Promatric and ALL TYPES OF MEDICAL BOARD Exams all over the world.
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#1. A 58-year-old woman with a history of hysterectomy presents with crampy abdominal pain, vomiting, and abdominal distension. She reports passing small amounts of flatus this morning. On exam, her abdomen is tender but soft. What is the most likely diagnosis? ? The key clue is passing flatus despite obstructive symptoms (pain, distension, vomiting). This distinguishes partial from complete SBO, where no flatus/stool passes.
The key clue is passing flatus despite obstructive symptoms (pain, distension, vomiting). This distinguishes partial from complete SBO, where no flatus/stool passes.
#2. What is the most common cause of SBO worldwide? ? Post-surgical adhesions cause ~60% of SBO cases.
Post-surgical adhesions cause ~60% of SBO cases.
#3. Which patient is NOT a candidate for nonoperative management? ? Pneumoperitoneum = perforation, requiring urgent surgery.
Pneumoperitoneum = perforation, requiring urgent surgery.
#4. Which laboratory finding is most concerning in SBO? ? Lactate elevation suggests ischemia.
Lactate elevation suggests ischemia.
#5. A 78-year-old woman with no surgical history presents with intermittent abdominal pain and vomiting. CT shows a transition point near the ileocecal valve with a calcified lesion and pneumobilia. What is the most likely diagnosis? ? The classic triad of gallstone ileus includes (1) SBO symptoms, (2) pneumobilia (air in biliary tree), and (3) ectopic calcification (gallstone) at transition point. This occurs via cholecystoenteric fistula formation.
The classic triad of gallstone ileus includes (1) SBO symptoms, (2) pneumobilia (air in biliary tree), and (3) ectopic calcification (gallstone) at transition point. This occurs via cholecystoenteric fistula formation.
#6. A patient with SBO develops tachycardia (HR 120), fever (38.5°C), and metabolic acidosis. What is the most urgent intervention? ? Systemic signs (fever, acidosis, tachycardia) suggest bowel compromise, requiring immediate surgery.
Systemic signs (fever, acidosis, tachycardia) suggest bowel compromise, requiring immediate surgery.
#7. A 72-year-old man with prior laparotomy presents with 12 hours of unrelenting abdominal pain and vomiting. He has not passed stool or flatus for 24 hours. Abdominal X-ray shows multiple dilated small bowel loops with no colonic gas. What is the next best step? ? Absolute constipation + no colonic gas suggests complete SBO, requiring hospitalization, NGT decompression, and surgical evaluation.
Absolute constipation + no colonic gas suggests complete SBO, requiring hospitalization, NGT decompression, and surgical evaluation.
#8. Which imaging finding is pathognomonic for bowel ischemia in SBO? ? Conservative management (fluids, NGT, bowel rest) is first-line for partial SBO without red flags.
Conservative management (fluids, NGT, bowel rest) is first-line for partial SBO without red flags.
#9. Which of the following physical exam findings most strongly suggests bowel ischemia in a patient with SBO? ? Peritonitis (guarding/rebound) indicates strangulation or ischemia, a surgical emergency.
Peritonitis (guarding/rebound) indicates strangulation or ischemia, a surgical emergency.
#10. A patient with SBO develops sudden, severe pain and hypotension. What is the most likely cause? ? Sudden pain + hypotension suggests perforation → septic shock.
Sudden pain + hypotension suggests perforation → septic shock.