Which of the following drugs is most likely to cause hypoglycemia when used as monotherapy in the treatment of type 2 diabetes?

Correct Answer: B

Rationale: Glyburide, a sulfonylurea, stimulates insulin release, increasing hypoglycemia risk, unlike the others.

Correct Answer: C

Rationale: HCG is the key urinary pregnancy marker produced by the placenta.

Correct Answer: C

Rationale: Haemoptysis, jaundice, and calf pain suggest serious issues (e.g., embolism, liver dysfunction, DVT) requiring immediate cessation. Rifabutin and seizures warrant review, not instant stop.

Correct Answer: A

Rationale: Regular insulin is the only insulin suitable for IV use due to its solubility.

Correct Answer: B

Rationale: Metformin risks lactic acidosis, requires discontinuation before surgery due to lactic acidosis risk, and causes anorexia/weight loss. It's contraindicated in alcoholics and rarely causes hypoglycaemia.