What does it mean when an electrocardiogram shows old myocardial infarction?
May 11, 2023
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
Old myocardial infarction, also known as old myocardial infarct, refers to a previous episode of myocardial infarction shown on electrocardiogram (ECG), which has led to myocardial fibrosis and scar formation. Patients with old myocardial infarction may take medications such as enteric-coated aspirin tablets and clopidogrel hydrogen sulfate tablets as directed by their physicians. During treatment, it is also important to maintain a low-salt, low-fat diet and to quit smoking and alcohol consumption.
Old myocardial infarction, also known as old myocardial infarct, refers to a previous episode of myocardial infarction that has led to myocardial fibrosis and scar formation, as shown on electrocardiogram (ECG). Specific details are as follows:
Old myocardial infarction is a pathological condition occurring more than eight weeks after the onset of acute myocardial infarction, typically referring to myocardial infarction that happened over six months ago. This indicates that the patient previously experienced a heart attack, with or without treatment, and has since recovered physically. However, some myocardial cells have died and left permanent changes. On ECG, this usually manifests as pathological Q waves, low or inverted T waves, and abnormal ST-T segment changes. Patients often do not exhibit obvious clinical symptoms in daily life, but may experience palpitations, chest tightness, or shortness of breath after physical exertion.
Patients with old myocardial infarction should follow medical advice and take medications such as enteric-coated aspirin tablets and clopidogrel hydrogen sulfate tablets. During treatment, it is important to maintain a low-salt, low-fat diet and avoid smoking and alcohol consumption. If any discomfort occurs, prompt medical attention is recommended.
