Hyperkalemia will cause what on EKG?

Prepare for the ACCS General Critical Care Exam. Study with questions, improve your critical care skills, and understand exam content for success. Master your exam!

Multiple Choice

Hyperkalemia will cause what on EKG?

Explanation:
High potassium levels alter ventricular repolarization, producing tall, peaked T waves on the ECG. This spike-like T wave is the classic early sign of hyperkalemia, reflecting faster repolarization of ventricular myocytes as extracellular potassium rises. As potassium continues to rise, other changes can appear—PR interval lengthens and QRS widens, and eventually a dangerous sine-wave pattern can develop with a high risk of malignant arrhythmias. The other patterns described (flat T waves, prolonged QT, ST segment elevation) are not typical of hyperkalemia and usually point to other conditions such as hypokalemia or myocardial injury.

High potassium levels alter ventricular repolarization, producing tall, peaked T waves on the ECG. This spike-like T wave is the classic early sign of hyperkalemia, reflecting faster repolarization of ventricular myocytes as extracellular potassium rises. As potassium continues to rise, other changes can appear—PR interval lengthens and QRS widens, and eventually a dangerous sine-wave pattern can develop with a high risk of malignant arrhythmias. The other patterns described (flat T waves, prolonged QT, ST segment elevation) are not typical of hyperkalemia and usually point to other conditions such as hypokalemia or myocardial injury.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy