APPLIED PHYSIOLOGY · PRIMARIES SURGERY

Haemorrhagic shock physiology — 24M splenic injury

8 decision points ~18 min Difficulty 3/5 Primaries

Setting

You are the surgical registrar leading a Year-1 trauma resident through the physiology of a hypovolaemic patient in the resuscitation bay, before ATLS actions.

Patient

Mr Y, 24-year-old motorcyclist, high-speed collision. He arrives with a suspected splenic injury: BP 92/62, HR 128, RR 26, cool peripheries, confused (GCS 13), urine output 15 ml/h. Estimated blood loss so far ~1.5 L.

Reference stack

Bailey & Love 28e Ch 4 · Ganong's 26e Ch 33 · Sabiston 21e Ch 22 · ATLS 10e

Start cascade →

You'll be asked to decide what happens next at each step. There's no timer — take your time. The correct answer + evidence-anchored rationale is revealed after each choice.