Premonitory signs of a sudden heart attack
Updated on May 14, 2025
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Sudden heart disease primarily refers to the sudden onset of acute myocardial infarction. Between 50% to 81.2% of patients have prodromal symptoms, experiencing significant chest discomfort, fatigue, palpitations during activity, shortness of breath, irritability, and angina in the days before the onset, with the most prominent being new or worsening angina. The angina is more frequent than before, more severe, lasts longer, and nitroglycerin relief is not significantly apparent; the triggers are also unclear. Sometimes, gastrointestinal symptoms such as nausea, vomiting, and upper abdominal bloating occur and are often misdiagnosed, causing delays in treatment.
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