Given below is the ECG or a normal human. Which one of its components is human, which one of its components is correctly interpreted below. [AIPMT (M) 2011] |
A) complex QRSOne complete pulse
B) peak TInitiation of total cardiac contraction
C) peak P and peak R togethersystolic and diastolic blood pressures
D) peak PInitiation of left atrial contraction only
Correct Answer: C
Solution :
[C] 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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