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Assertion : The enlarged Q and R waves i...

Assertion : The enlarged Q and R waves indicate myocardial infarction
Reason : Any deviation in the normal recording of ECG indicates possible abnormality or disease.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
A normal electrocardiogram (ECG) is composed of P wave, a QRS wave (complex) and a T wave. The ECGs obtained from different individuals have roughly the same shape and any deviation from this shape indicates a possible abnormality or disease. For example, the enlarged Q and R wave indicate a myocardial infraction (heart attack), enlargement of the P wave indicates enlargement of the atria. T wave is flat when the heart muscles receive insufficient oxygen as in atherosclerotic heart disease.
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