Which term is synonymous with myocardial infarction?

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Understanding synonyms for medical terms: myocardial infarction is the formal medical term for a heart attack, caused by a blocked coronary artery leading to death of heart muscle tissue from lack of oxygen. The term that means the same thing is the exact same medical term itself, often spoken as “heart attack” in everyday language. The other options are not synonyms; they are procedures or devices used to treat or manage heart problems—angioplasty opens a narrowed artery, coronary artery bypass creates new routes for blood flow, and pacemaker implantation regulates heart rhythm. So the best answer is the term that corresponds directly to the condition itself, with “heart attack” being the common everyday synonym.