A) complex QRS-One complete pulse
B) peak T-Initiation of total cardiac contraction
C) peak P and peak R together-systolic and diastolic blood pressures
D) peak P-Initiation of left atrial contraction only
Correct Answer: C
Solution :
Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart peak P causes diastolic phase in ventricle while peak R causes systole in ventricle. Thus, peak P and peak R together represent diastolic and systolic blood pressures.
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