A client is admitted with heart failure (HF) and left ventricular hypertrophy. Which intervention is most likely to avert development of cardiomegaly and improve myocardial contractility?

A. This is the most likely intervention to avert cardiomegaly and improve myocardial contractility. By reducing blood pressure, the heart doesn't have to work as hard to pump blood, which can help prevent the heart from enlarging (cardiomegaly) and improve its ability to contract effectively. B. While rest and oxygen can help manage symptoms of heart failure, they do not directly address the underlying issue of increased cardiac workload and hypertrophy. C. Monitoring heart rate and rhythm is important for assessing the patient's condition, but it does not prevent cardiomegaly or improve contractility. D. Nitroglycerin is used to treat acute symptoms of heart failure, such as chest pain, but it is not a long- term solution for preventing cardiomegaly or improving contractility.