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Physiology Conducting System of Hea 4ea4d001

During the T-P interval in an ECG of a patient with a damaged cardiac muscle, which of the following is true?

A
The entire ventricle is depolarized
B
The entire ventricle is depolarized except for the damaged cardiac muscle
C
The entire ventricle is repolarized
D
The entire ventricle is repolarized except for the damaged cardiac muscle
High-Yield Explanation
During the T-P interval in a patient with a damaged ventricle, the only area depolarized is the damaged muscle. Therefore, the remainder of the ventricle is repolarized. At the J point, the entire ventricle is depolarized in a patient with a damaged cardiac muscle or in a patient with a normal cardiac muscle. The area of the hea that is damaged will not repolarize but remains depolarized at all times.

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