What EKG finding might indicate hypokalemia?

What EKG finding might indicate hypokalemia?

• A. Shortened QT interval
• B. Flattened or inverted T wave
• C. Widened QRS complex
• D. Increased heart rate

Answer: (B)

Hypokalemia, or low potassium levels in the blood, can lead to specific changes in the electrocardiogram (EKG). One of the hallmark findings associated with hypokalemia is the presence of flattened or inverted T waves. Potassium plays a crucial role in the repolarization phase of the cardiac action potential, and when levels are low, this can alter the normal T wave morphology.

The flattening or inversion of the T wave reflects the impaired repolarization due to the imbalance in potassium levels. As potassium levels drop, cardiac myocytes become less excitable and affected by the altered ion concentrations, which impacts the EKG tracing.

This specific EKG finding can serve as an important diagnostic indicator to help clinicians identify and manage potassium imbalances in patients. Recognizing these changes is critical for preventing potential cardiac complications associated with hypokalemia, such as arrhythmias.