Medical Knowledge and Clinical Practice
What the domain tests
This section assesses applied clinical knowledge: taking a focused history, generating a prioritised differential, choosing investigations that change management, and initiating safe treatment within Hong Kong's public and private systems. Questions reward a structured, safety-first approach over rare diagnoses.
Core rules
- Resuscitate before you diagnose: airway, breathing, circulation, then history and focused examination.
- Build the differential by time course (acute vs chronic), system, and "can't-miss" diagnoses before common ones.
- Anchor in local epidemiology: tuberculosis, chronic hepatitis B, nasopharyngeal carcinoma, dengue and other arboviruses, melioidosis, and interactions with traditional Chinese medicine.
- Choose investigations by pre-test probability and downstream action; interpret results against the clinical picture, not in isolation.
- Management must respect local law and resources: consent and capacity, notifiable disease reporting, Hospital Authority protocols, and antimicrobial stewardship.
- Reassess after treatment; document findings, decisions, and safety-netting advice.
Worked example
A 45-year-old man presents with five days of fever, retro-orbital pain, and jaundice after returning from Thailand. Platelets 80 × 10^9/L, ALT 210 U/L, and a rising haematocrit.
Reasoning: fever, thrombocytopenia, and rising haematocrit suggest dengue with plasma leakage. Prioritise dengue NS1/PCR and serial full blood counts; send malaria films and blood cultures to exclude alternatives. Avoid NSAIDs and intramuscular injections. Admit for observation, monitor haematocrit and urine output, and give cautious crystalloid if warning signs appear. Report the case as required and counsel on Aedes mosquito precautions.
Traps that cost marks
- Naming a diagnosis before excluding red flags such as sepsis, meningism, or acute coronary syndrome.
- Forgetting that warfarin, digoxin, and immunosuppressants interact with common Chinese herbal medicines.
- Missing notifiable-disease obligations or occupational exposure reporting.
- Treating a laboratory value rather than the patient-for example, transfusing platelets in dengue without an indication.
- Discussing management without confirming capacity, consent, or the appropriate level of care.