What is often a clinical concern associated with multiple PVCs?

What is often a clinical concern associated with multiple PVCs?

• A. Increased stroke risk
• B. Decreased myocardial oxygen supply
• C. Higher likelihood of heart attack
• D. Irregular heartbeats only

Answer: (B)

The correct choice highlights the concern that multiple premature ventricular contractions (PVCs) can lead to decreased myocardial oxygen supply. When there are frequent PVCs, the heart can experience inefficient contractions which may result in a reduced cardiac output. This inefficiency can disturb the normal filling of the heart chambers, subsequently impairing the heart's ability to supply oxygen-rich blood to the myocardium, particularly during periods of increased demand.

In addition to this, the increased frequency of PVCs may lead to a compensatory increase in heart rate or create periods of ineffective pumping, further contributing to diminished oxygen delivery to the heart muscle itself.

Recognizing the implications of multiple PVCs is crucial in clinical settings, as they can indicate underlying cardiac issues or lead to more serious arrhythmias. Understanding this risk helps healthcare providers monitor patients more closely and take preventive measures if needed.