Hyperkalemia can cause life-threatening arrhythmia, and thus recognizing related patterns on the ECG is crucial ... the hyperkalemia first. Absence of the P waves and eventually a “sine wave ...

These ECG voltage attenuations are of extracardiac mechanism, and impact the amplitude of QRS complexes, P-waves, and T-waves ... more than a single ECG tracing. Incorporation of these ideas ...

Decreased amplitude of the P waves, an increase in the PR interval, and bradycardia in the form of AV blocks occur as the potassium level exceeds 7.0. Absence of the P waves and, eventually ...