What does ST elevation indicate?

What does ST elevation indicate?

• A. Myocardial infarction bc one or more of the coronary arteries that supply blood to the myocardium are occluded
• B. Atrial fibrillation
• C. Stroke
• D. Pulmonary embolism

Answer: (A)

ST elevation signals acute injury to the heart muscle from ischemia due to a sudden blockage of a coronary artery, leading to transmural (full-thickness) infarction. This is the classic sign of ST-elevation myocardial infarction and prompts urgent reperfusion therapy (PCI or thrombolysis). Other conditions can alter the ST segment, but new ST elevation in the affected leads specifically points to an acute coronary occlusion rather than atrial fibrillation, stroke, or pulmonary embolism.

ST elevation signals acute injury to the heart muscle from ischemia due to a sudden blockage of a coronary artery, leading to transmural (full-thickness) infarction. This is the classic sign of ST-elevation myocardial infarction and prompts urgent reperfusion therapy (PCI or thrombolysis). Other conditions can alter the ST segment, but new ST elevation in the affected leads specifically points to an acute coronary occlusion rather than atrial fibrillation, stroke, or pulmonary embolism.