Rate of Cough During Treatment With Angiotensin-Converting Enzyme Inhibitors: A Meta-Analysis of Randomized Placebo-Controlled Trials.

Use of protective angiotensin-converting enzyme inhibitors (ACE-I) in patients with cardiovascular disease (CVD) is sometimes limited by incident coughing. In clinical trials, cough occurred also on placebo. We performed a meta-analysis including randomized, placebo-controlled trials reporting cough on ACE-I in patients with CVD. We evaluated the attributable fraction of cough on ACE-I accounting rate on placebo: placebo-adjusted ACE-I (%) = (ACE-I (%) - Placebo (%)) / ACE-I (%). In total, 65,054 patients from 22 included studies were analyzed. Placebo-adjusted ACE-I cough was 37% of 13.5% reported cases on ACE-I, while 8.5% reported cases on placebo were equivalent to 63% of cases on ACE-I, indicating potential other factors for cough than ACE-I in a substantial number of cough cases on ACE-I. Placebo-adjusted ACE-I cough had the highest rates of arterial hypertension (85%) and the lowest of heart failure (29%). Therefore, other causes of cough, particularly in heart failure, should be excluded before ACE-I withdrawal.

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© 2018 American Society for Clinical Pharmacology and Therapeutics.