Acute coronary syndrome is a term used to describe a range of conditions caused by a sudden decrease in blood flow to the heart muscle. Some synonyms for acute coronary syndrome include coronary artery disease, cardiac rupture, myocardial infarction, unstable angina, and heart attack. These conditions can result in serious complications, including heart failure, stroke, and death, so it is important to seek medical attention immediately if you experience any symptoms of acute coronary syndrome. Early recognition and treatment can improve outcomes and increase the chances of a full recovery. Some common symptoms of acute coronary syndrome include chest pain, shortness of breath, dizziness, nausea, and fatigue.