Which of the following treatments may be prescribed for PVCs?

The treatment option of beta blockers or antiarrhythmics for premature ventricular contractions (PVCs) is appropriate because these medications are specifically designed to manage cardiac arrhythmias. PVCs occur when the heart's electrical system triggers contractions earlier than expected, which can lead to a variety of symptoms, including palpitations or a feeling of fluttering in the chest.

Beta blockers work by blocking the effects of adrenaline on the heart, which can help stabilize the heart rhythm and reduce the frequency of PVCs. Antiarrhythmics are medications that directly work to correct abnormal electrical activity in the heart, effectively reducing the incidence of PVCs and improving overall heart rhythm.

The other treatments listed—antibiotics, sedatives, and hormonal treatments—do not address the underlying electrical abnormalities that cause PVCs. Antibiotics are used to treat bacterial infections, sedatives can help with anxiety or sleep issues but do not impact heart rhythm, and hormonal treatments are not relevant in the context of managing premature ventricular contractions. Hence, beta blockers or antiarrhythmics are the most suitable choice for treating PVCs and improving cardiac function.