01 · PERIOPERATIVE THINKING
Risk is contextual.
Operative risk is not a property of a procedure alone. It arises from the person’s reserve, the pathology, the urgency, the operative field and the anticipated physiological stress. In exam questions, sort what is modifiable, what is time-sensitive and what needs further assessment.
Retrieve: Name five elements that turn a procedure label into a real perioperative risk picture.
02 · WOUND HEALING
Healing is ordered, not instant.
Haemostasis is followed by inflammation, proliferation and remodelling. These phases overlap rather than switch on and off like boxes. Questions commonly test the dominant biological activity, the effect of impaired tissue conditions, or why a wound problem cannot be explained by one moment alone.
Retrieve: Put the broad phases in order and state why they overlap.
03 · FLUID & PHYSIOLOGY
Compartment is the first map.
Total body water is distributed across intracellular and extracellular compartments. Surgical physiology questions often ask how a process changes volume, solute or perfusion—not merely whether a person “needs fluid.” The exam target is direction and mechanism, never a one-size-fits-all prescription.
Retrieve: Why is “which compartment changes?” a stronger first question than “which fluid?”
04 · INFECTION & SOURCE CONTROL
Locate the driver.
Infection reasoning joins host, microorganism, tissue plane and source. The concept of source control asks whether the ongoing anatomical driver has been identified; it is not an instruction to perform a procedure. In real care, this requires urgent local assessment and appropriate senior support.
Retrieve: What four contexts should sit beside an infection label in a surgical vignette?
05 · ONCOLOGY
Stage describes extent, grade describes biology.
Stage broadly describes anatomical extent of disease; grade describes how abnormal tumour cells appear and often correlates with biological behaviour. They answer different questions. Exam stems may deliberately offer both so that the learner does not collapse extent and aggressiveness into one idea.
Retrieve: Explain stage and grade in one sentence each.
06 · TRAUMA REASONING
Physiology comes before the catalogue.
Trauma questions reward a stable sequence of thinking: first identify threats to physiology, then use mechanism and examination context to organise possibilities, then seek the discriminating information. This is a revision framework, not a substitute for emergency response or training.
Retrieve: What should be prioritised before building a long differential from mechanism alone?