Heart Failure, Infarction and Angina · NCLEX Exam

During an angina episode, how does nitroglycerin primarily work?

  1. Increasing the heart rate and contractility
  2. Dilating coronary and peripheral vessels, lowering oxygen demand
  3. Promoting renal fluid and sodium retention
  4. Blocking conduction through the AV node
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Correct answer: Dilating coronary and peripheral vessels, lowering oxygen demand

Nitroglycerin dilates coronary and systemic veins/arteries, decreasing preload and myocardial oxygen demand, relieving angina.

Difficulty: Easy Question 16 of 20

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