General Surgery (OMS B Specialty Training Content)
What the domain tests
The OMSB General Surgery (OEGS) exam assesses applied surgical judgment across the perioperative pathway, emergency general surgery, trauma, and common elective presentations. Questions typically combine recognition, investigation choice, and next-step management rather than isolated recall.
Core rules and concepts
- Resuscitation precedes definitive diagnosis in the unstable patient: ABCDE approach, hemorrhage control, and balanced transfusion in trauma. Do not delay surgery for CT in the exsanguinating patient.
- Surgical sepsis is time-critical: cultures, broad-spectrum antibiotics within 1 hour for septic shock, and source control by drainage or operation. Antibiotics do not substitute for source control.
- Acute abdominal pain: localize by anatomy and peritoneal irritation. The Alvarado score is an adjunct, not a substitute for clinical judgment. CT is preferred in adults with ambiguous appendicitis; ultrasound is first-line in children and pregnancy.
- Gallstone disease: biliary colic causes intermittent RUQ pain; acute cholecystitis causes persistent pain, fever, Murphy sign, and wall thickening; ascending cholangitis causes fever, jaundice, and RUQ pain (Charcot triad), often with sepsis. Management differs: cholecystectomy versus urgent biliary drainage plus antibiotics.
- Hernia: assess reducibility and strangulation. An irreducible, tender, obstructed hernia requires emergency surgery; never forcefully reduce a strangulated hernia.
- Perioperative care: VTE risk assessment, antibiotic prophylaxis within 60 minutes of incision, normothermia, glucose control, and early enteral feeding when safe.
Worked example
A 62-year-old man has 2 days of RUQ pain, fever 38.9°C, and jaundice. HR 118, BP 96/60, WBC 18. What is the diagnosis and immediate management? Reasoning: Fever, jaundice, and RUQ pain form Charcot triad, indicating ascending cholangitis rather than simple cholecystitis. Hypotension and tachycardia indicate sepsis. Immediate steps are crystalloid resuscitation, blood cultures, broad-spectrum antibiotics covering gram-negative and anaerobic organisms, and urgent biliary decompression-ERCP with sphincterotomy or stent is first-line. Cholecystectomy is usually deferred until stabilization.
Traps that cost marks
- Treating cholangitis as uncomplicated cholecystitis and omitting urgent drainage.
- Forgetting that antibiotics alone do not replace source control.
- Ordering CT before resuscitation in an unstable patient.
- Missing strangulation because the patient reports pain without obstruction.
- Assuming all RUQ pain is biliary colic; persistent pain with systemic signs needs escalation.