Q. What does a possible inferior infarct on an ECG test mean?
Doctor Answer is medically reviewed by SecondMedic medical review team.
An inferior infarct on an ECG test typically indicates a myocardial infarction (heart attack) that has occurred. It is identified on the electrocardiogram by the presence of ST segment elevation, depression or T-wave inversion in lead II, III and aVF (leads located on the lower portion of the heart). This can be further confirmed with laboratory tests such as troponin levels or imaging studies like echocardiography.
Inferior infarcts usually involve damage to one of the two main coronary vessels that supply oxygenated blood to this area: The posterior descending artery or its diagonal branch. These arteries originate from the left anterior descending artery and travel down towards the base of your heart. If there is a blockage, it restricts blood flow and leads to tissue damage. As a result, areas of cell death occur in both layers of muscle cells known as myocardium - hence why we call it an "infarct" (which refers to an area where tissue is dead due to lack of oxygen). Other possible causes for inferior infarctions are spasms in these arteries which can also decrease or stop blood flow resulting in cell death.
It's important to note that while all heart attacks have similar symptoms – chest pain/pressure, nausea/vomiting, upper abdominal discomfort – they don't always cause detectable changes on an ECG test right away during acute stages. That's why keeping close watch over Troponin I/T levels after these events often gives more accurate results than relying solely on ECG findings alone when diagnosing myocardial infractions!
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