Posted: August 16th, 2017

Which of the following ECG characteristics is usually seen when a patient’s serum potassium level is low?

Which of the following ECG characteristics is usually seen when a patient’s serum potassium level is low?
a) U wave
The U wave is an ECG waveform characteristic that may reflect Purkinje fiber repolarization. It is usually seen when a patient’s serum potassium level is low.
b) T wave
The T wave is an ECG characteristic reflecting repolarization of the ventricles. It may become tall or “peaked” if a patient’s serum potassium level is high.
c) P wave
The P wave is an ECG characteristic reflecting conduction of an electrical impulse through the atria.
d) QT interval
The QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.