A 65-year-old patient with stable angina is prescribed sublingual glyceryl trinitrate (GTN) spray for symptom relief. What is the most important piece...

Question

A 65-year-old patient with stable angina is prescribed sublingual glyceryl trinitrate (GTN) spray for symptom relief. What is the most important piece of advice regarding its mechanism of action and potential side effects?

Accepted Answer

It dilates coronary arteries and systemic veins, and can cause headache and dizziness.

Answer

It prevents platelet aggregation and can cause bleeding.

Answer

It reduces heart rate and can cause bradycardia.

Answer

It blocks calcium channels and can cause ankle swelling.

Answer

It increases myocardial contractility and can cause palpitations.

mrcgp akt MCQ (SBA): Angina Pectoris

A 65-year-old patient with stable angina is prescribed sublingual glyceryl trinitrate (GTN) spray for symptom relief. What is the most important piece of advice regarding its mechanism of action and potential side effects?