Erectile dysfunction (ED) is often a marker for serious underlying cardiovascular disease (CVD), and cardiologists are increasingly involved in the care of men with ED. It is important to ask specifically about ED when evaluating men with CVD, since they may be embarrassed to volunteer this information. During the clinical workup, it is also important to check for contributing factors to ED such as diabetes, depression, stress, alcohol abuse, and cardiovascular risk factors. Patients should be advised that many treatment options are available for ED, including the phosphodiesterase type 5 (PDE5) inhibitors. The PDE5 inhibitors are safe and effective in most patients with CVD, including those taking multiple antihypertensive drugs. Furthermore, they have no deleterious effect on exercise capacity, heart rate, or extent of exercise‐induced ischemia. In the future, the PDE5 inhibitors may have a role in reducing pulmonary hypertension in persons with primary pulmonary arterial hypertension (PAH) or congestive heart failure. The one major precaution for men taking PDE5 inhibitors is to avoid concomitant administration of therapeutic and recreational nitrate preparations. Patients with chest pain suggestive of a heart attack need to inform emergency room (ER) personnel if they are taking a PDE5 inhibitor. Similarly, before giving nitrates, ER personnel need to ask patients if they have used PDE5 inhibitors. Nitrates should not be given for at least 24 h after a patient uses sildenafil or vardenafil and at least 48 h after a patient uses tadalafil.
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