The absolute refractory period begins with the onset of the _____ and terminates _____
a. P wave; with the end of the QRS complex
b. QRS complex; at approximately the apex of the T wave
c. QRS complex; with the end of the T wave
d. P wave; with the beginning of the QRS complex
B
On the ECG, the absolute refractory period corresponds with the onset of the QRS complex to the peak of the T wave.
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