PR interval can be measured for the beat immediately before a PVC?

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Multiple Choice

PR interval can be measured for the beat immediately before a PVC?

Explanation:
PR interval is the time from the start of atrial depolarization (P wave) to the start of ventricular depolarization (QRS) on a beat that is conducted through the normal AV conduction pathway. A PVC is a premature ventricular contraction that typically occurs without a preceding P wave and has a wide QRS, so its PR interval isn’t defined. The beat immediately before a PVC, however, is a regular conducted beat with a P wave and a normal QRS, so its PR interval can be measured just like any other conducted beat. That makes the answer yes.

PR interval is the time from the start of atrial depolarization (P wave) to the start of ventricular depolarization (QRS) on a beat that is conducted through the normal AV conduction pathway. A PVC is a premature ventricular contraction that typically occurs without a preceding P wave and has a wide QRS, so its PR interval isn’t defined. The beat immediately before a PVC, however, is a regular conducted beat with a P wave and a normal QRS, so its PR interval can be measured just like any other conducted beat. That makes the answer yes.

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