General Surgery

20 learning units • 100 chapter sections • 200 explained questions. Assess surgical disease, recognise complications and connect intervention with safe recovery and follow-up.

Original RAHBAR study material for the Year 4 learning pathway. Clinical cases support supervised undergraduate learning. Treatment choices, doses and procedures must follow current local protocols and the responsible clinical team. References & further reading ↓

MODULE 09 / 20

Bowel Obstruction & Complicated Hernias

Distinguish mechanical obstruction from ileus and identify strangulation before irreversible bowel injury develops.

Answer all 10 questions, then submit to see your score and explanations. This is a self-study exercise; results are not saved.

Question 01. Can a patient pass stool early in bowel obstruction? A. No, neverB. Only if all imaging is normalC. Only after surgeryD. Yes

Question 02. Which change is particularly concerning in obstruction? A. Mild thirst aloneB. A previous scar without symptomsC. One bowel soundD. Colicky pain becoming continuous with peritonism

Question 03. What is a closed-loop obstruction? A. A purely functional ileusB. A normal postoperative finding in every patientC. A bowel segment obstructed at two pointsD. An external skin wound

Question 04. What does a normal lactate exclude in early suspected bowel ischaemia? A. It does not reliably exclude itB. All ischaemiaC. Every need for surgeryD. All forms of obstruction

Question 05. What is an incarcerated hernia? A. Any painless reducible bulgeB. A hernia with proven necrosis by definitionC. A healed repair scarD. An irreducible hernia

Question 06. What defines strangulation in a hernia? A. Size aloneB. Cough impulse aloneC. Any visible scarD. Compromised blood supply to its contents

Question 07. Which patient is unsuitable for a routine conservative obstruction trial? A. A selected stable patient with uncomplicated adhesionsB. A patient under close serial review without danger signsC. A patient improving within an approved pathwayD. A patient with peritonitis and suspected strangulation

Question 08. Why examine groins in bowel obstruction? A. A hernia may be the causeB. Groin findings never alter careC. All obstruction is adhesiveD. It replaces abdominal examination

Question 09. What is unsafe when strangulation is suspected? A. Urgent surgical referralB. Forceful unsupervised reductionC. Resuscitation with monitoringD. Appropriate analgesia

Question 10. What should be discussed before surgery for complicated obstruction? A. A guarantee that no bowel will be removedB. No alternatives or risksC. Possible resection or stoma when relevantD. Only the skin-incision length

0 / 10 answered

References & Further Reading

Read the relevant guideline sections alongside these original clinical teaching cases. Local pathways, available services and individual patient factors determine care.

WSES — Emergency surgery guidelines

Reference review: 27 September 2026. Consult current local protocols for prescribing, procedures and escalation.