Question

Choose the correct statement.

• A. The T-wave in an ECG represents excitation of ventricles.
• B. The sum of P and T-waves in a given time period can determine the heartbeat of an individual.
• C. The end of the P wave marks the end of systole.
• D. The enlarged Q and R waves indicate myocardial infarction.

Answer 1

The correct option is D

The enlarged Q and R waves indicate myocardial infarction.

A T-wave indicates the return of the ventricles from an excited state or relaxed state of ventricles. The sum of P and T-waves in a given time period corresponds to a specific electric activity of the heart. The end of a T wave marks the end of systole.

Larger P waves indicate an enlargement of an atrium. Enlarged Q waves may indicate Myocardial infarction. Enlarged R wave generally indicates enlarged ventricles.