What is a characteristic ECG finding in hyperkalemia?

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Multiple Choice

What is a characteristic ECG finding in hyperkalemia?

Explanation:
Elevated potassium speeds up ventricular repolarization, which shows up on the ECG as tall, peaked T waves. This tall-T-wave pattern is the classic early sign of hyperkalemia and serves as a key clue that potassium is elevated. As potassium levels rise further, conduction slows, leading to widening of the QRS complex and, in severe cases, a sine-wave pattern. ST segment elevations are not typical of hyperkalemia and are more associated with ischemia or other conditions. So the presence of tall, peaked T waves points most directly to hyperkalemia and guides prompt management.

Elevated potassium speeds up ventricular repolarization, which shows up on the ECG as tall, peaked T waves. This tall-T-wave pattern is the classic early sign of hyperkalemia and serves as a key clue that potassium is elevated. As potassium levels rise further, conduction slows, leading to widening of the QRS complex and, in severe cases, a sine-wave pattern. ST segment elevations are not typical of hyperkalemia and are more associated with ischemia or other conditions. So the presence of tall, peaked T waves points most directly to hyperkalemia and guides prompt management.

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