Which EKG finding may indicate a myocardial ischemia?

A depressed ST segment is a key finding that may indicate myocardial ischemia. This occurs when there is a lack of sufficient blood flow to the heart muscle, often due to blockage or narrowing of the coronary arteries. When ischemia occurs, the electrical activity of the heart can be altered, leading to changes in the EKG, such as a downward displacement of the ST segment from the baseline.

This finding suggests that the heart muscle is not receiving adequate oxygen, which can lead to more serious conditions if left unaddressed. Recognizing the significance of a depressed ST segment is critical in diagnosing and treating potential heart conditions promptly.

In contrast, an elevated ST segment is often associated with myocardial infarction (heart attack) rather than ischemia alone, while a normal QRS duration indicates normal ventricular conduction, and the presence of U waves can point towards other electrolyte imbalances or conditions that are not directly linked to ischemia. Understanding these nuances is essential in interpreting EKG readings correctly.