Which class of blood pressure medication should not be prescribed to patients with congestive heart failure (CHF)?

Calcium channel blockers are typically not prescribed for patients with congestive heart failure (CHF) due to their potential adverse effects on heart function. While certain calcium channel blockers can be beneficial in managing hypertension and angina, they may also cause negative inotropic effects—meaning they can weaken the force of the heart's contraction. This can exacerbate the symptoms of heart failure, making the condition worse.

In contrast, ACE inhibitors are commonly prescribed for CHF because they help in reducing afterload and preload, leading to improved cardiac output. Beta blockers are also beneficial in CHF management as they can improve heart function and outcomes when used appropriately. Diuretics are often a cornerstone treatment in CHF to help relieve fluid overload symptoms such as edema and shortness of breath.

Understanding the roles and limitations of various antihypertensive medications in the context of heart failure is crucial for safe and effective patient management.