Given below is the ECG of a normal human. Which one of its compon… - Vidyadip

MCQ

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

A
Peak P and Peak R together - systolic and diastolic blood pressures
B
Peak P - Initiation of left atrial contraction only
C
Peak T - Initiation of total cardiac contraction
D
Complex QRS - One complete pulse

✓

Answer

D. Complex QRS - One complete pulse
Explanation:
The QRS complex shows one complete pulse. It represents the depolarisation of the ventricles, which initiates the ventricular contraction. The contraction starts shortly after Q and marks the beginning of the systole.

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