Final answer:
The RN should anticipate the PCP to prescribe Propranolol, a beta blocker, for a client with mitral valve prolapse and tachyarrhythmias.
Step-by-step explanation:
A client diagnosed with mitral valve prolapse and tachyarrhythmias on an ECG may be prescribed various medications to manage the symptoms. One of the common classes of drugs used to treat tachyarrhythmias are beta blockers, which help to slow the heart rate and decrease the strength of the heart's contractions. Given the options, Propranolol, a non-selective beta blocker, is often utilized in such conditions and could be anticipated as a prescription from the primary care provider (PCP).