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Which is not a COMMON cause of premature ventricular contractions (PVCs)?

Exercise

Fever

Hypoxia

High blood sugar

High blood sugar is not considered a common cause of premature ventricular contractions (PVCs). PVCs are extra, abnormal heartbeats that disrupt the regular rhythm of the heart, and they can result from various factors, but high blood sugar is less frequently associated with this condition.

In contrast, exercise is a well-known trigger for PVCs due to increased demand on the heart and heightened sympathetic nervous system activity. Fever can lead to elevated metabolic demands and stress on the heart, also contributing to the occurrence of PVCs. Hypoxia, or a deficiency in the amount of oxygen reaching the tissues, is another factor that can lead to the development of PVCs, as the heart muscle may respond to the decreased oxygen supply with abnormal rhythms.

Therefore, while the other options are linked to triggering PVCs, high blood sugar does not have a direct and common association, making it the correct choice here.

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