NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Which factor does not increase the risk of premature ventricular contractions (PVC)?

Exercise
Caffeine
Nicotine
Hydration

The correct answer is: Hydration

Hydration does not increase the risk of premature ventricular contractions (PVC). In fact, adequate hydration is important for maintaining proper heart function and reducing the risk of heart rhythm abnormalities. Exercise, caffeine, and nicotine are factors that can increase the risk of PVCs. Exercise can sometimes trigger PVCs in individuals with underlying heart conditions. Caffeine is a stimulant that can have a direct effect on the heart's electrical activity, potentially leading to PVCs. Nicotine, found in tobacco products, is another stimulant that can increase the risk of PVCs by affecting the heart's rhythm and conduction system. Therefore, among the given options, hydration is the factor that does not increase the risk of premature ventricular contractions.