A 60-year-old man with known stable angina presents with chest pain. He uses his glyceryl trinitrate (GTN) spray and the pain resolves within 5 minute...

Question

A 60-year-old man with known stable angina presents with chest pain. He uses his glyceryl trinitrate (GTN) spray and the pain resolves within 5 minutes. He asks how GTN works. What is the primary mechanism of action of nitrates in relieving anginal pain?

Accepted Answer

They reduce preload through systemic venodilation

Answer

They increase myocardial contractility

Answer

They cause coronary artery vasodilation

Answer

They reduce heart rate

Answer

They have a direct analgesic effect

mrcp part 1 MCQ (SBA): Stable Angina

A 60-year-old man with known stable angina presents with chest pain. He uses his glyceryl trinitrate (GTN) spray and the pain resolves within 5 minutes. He asks how GTN works. What is the primary mechanism of action of nitrates in relieving anginal pain?