Paper I
2016 February (2010 Scheme) · 40 marks · 120 min

Question

Nitrates in acute attack of angina.

Q121 marksShort Answers

Answer

For acute anginal attacks, sublingual Glyceryl trinitrate (GTN) is the drug of choice. Given sublingually, it bypasses first-pass hepatic metabolism, providing rapid absorption and onset of action within 1–2 minutes. It causes venodilatation (reducing preload) and coronary vasodilatation, rapidly relieving anginal pain; if pain persists after 2–3 doses at 5-minute intervals, other causes (e.g., myocardial infarction) should be considered.

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