What is the primary use of NTG in medical treatments?

The primary use of nitroglycerin (NTG) in medical treatments is to relieve chest pain associated with coronary conditions, such as angina pectoris and acute coronary syndrome. Nitroglycerin acts as a vasodilator, which means it helps to widen blood vessels, thereby reducing the workload of the heart and improving blood flow to the myocardium (heart muscle). This effect alleviates the pain that occurs when the heart muscle does not receive enough oxygen, particularly during instances of reduced blood supply.

While nitroglycerin can have secondary effects, such as lowering blood pressure due to vasodilation, its primary indication is to address angina symptoms. It does not enhance blood circulation to the extent of treating broader cardiovascular issues unrelated to chest pain, nor is it used to treat infections in the heart, such as endocarditis. Understanding the specific function of nitroglycerin in the context of coronary health is essential for recognizing its critical role in emergency settings and cardiac care.