Ischemia on an EKG is characterized by?

Ischemia on an EKG is characterized by?

• A. Elevated ST segments
• B. Flat T waves
• C. Inverted and symmetrical T waves
• D. Wide QRS complexes

Answer: (C)

Ischemia on an EKG is best characterized by inverted and symmetrical T waves. This finding occurs because ischemia affects the repolarization of the myocardial cells. When the heart muscle does not receive enough blood flow, the repolarization process is altered, leading to changes in the T wave morphology. Inverted T waves are often seen in areas affected by ischemia, reflecting the disturbance in the electrical activity of the heart during this condition.

The presence of symmetrical T wave inversion is particularly indicative of myocardial ischemia and can signal underlying issues such as coronary artery disease or an impending myocardial infarction. Recognizing this pattern is essential for timely diagnosis and intervention.

Other waveform changes associated with ischemia can occur, but inverted T waves are a more specific marker for ischemic conditions compared to the options provided.