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The signs and symptoms of acute coronary syndrome, which usually begin abruptly, include the following: Chest pain (angina) or discomfort, often described as aching, pressure, tightness or burning. Pain radiating from the chest to the shoulders, arms, upper abdomen, back, neck or jaw. Nausea or vomiting. Indigestion.
Acute coronary syndrome. Acute coronary syndrome (ACS) is a syndrome (set of signs and symptoms) due to decreased blood flow in the coronary arteries such that part of the heart muscle is unable to function properly or dies. The most common symptom is chest pain, often radiating to the left shoulder or angle of the jaw, crushing, central and associated with nausea and sweating.