OSCE Clinical Reasoning 3

Question 1

A 45-year-old woman presents with sudden onset headache she describes as 'the worst headache of my life.' She is neurologically intact. What diagnosis must be ruled out first?

Accepted Answer

Subarachnoid hemorrhage

Answer

A thunderclap headache described as the worst of one's life is subarachnoid hemorrhage until proven otherwise, requiring urgent CT head and LP if CT is negative.

Question 2

Which approach best illustrates illness script-based reasoning in clinical medicine?

Accepted Answer

Matching a patient's presentation to a stored pattern of disease features, risk factors, and outcomes

Answer

Illness scripts are mental frameworks linking epidemiology, pathophysiology, and clinical features to a specific diagnosis for rapid pattern recognition.

Question 3

A 30-year-old male presents after a seizure with no prior history. He is post-ictal but vitals are stable. What is the most important initial investigation?

Accepted Answer

Blood glucose

Answer

Hypoglycemia is a rapidly reversible and immediately life-threatening cause of seizure that must be excluded first with a bedside glucose check.

Question 4

A diabetic patient presents with a painless foot ulcer. The ulcer has a punched-out appearance with surrounding callus. Foot pulses are intact. What type of ulcer is this?

Accepted Answer

Neuropathic ulcer

Answer

Painless, punched-out ulcers with surrounding callus at pressure points with intact pulses are characteristic of diabetic neuropathic ulcers.

Question 5

When using the hypothetico-deductive reasoning model, what does the clinician do after generating initial hypotheses?

Accepted Answer

Gathers targeted data to confirm or refute each hypothesis

Answer

The hypothetico-deductive model involves iteratively gathering targeted history, exam, and test data to confirm or eliminate each hypothesis.

OSCE Practice Test

OSCE Practice Test

OSCE Clinical Reasoning 3