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Comparative Study
. 2008 Feb;65(2):217-23.
doi: 10.1111/j.1365-2125.2007.02991.x. Epub 2007 Aug 15.

Different angiotensin-converting enzyme inhibitors have similar clinical efficacy after myocardial infarction

Morten L Hansen  1 , Gunnar H Gislason, Lars Køber, Tina Ken Schramm, Fredrik Folke, Pernille Buch, Steen Z Abildstrom, Mette Madsen, Søren Rasmussen, Christian Torp-Pedersen
Affiliations
Comparative Study

Different angiotensin-converting enzyme inhibitors have similar clinical efficacy after myocardial infarction

Morten L Hansen et al. Br J Clin Pharmacol. 2008 Feb.

Abstract

What is already known about this subject: Treatment with an angiotensin-converting enzyme (ACE) inhibitor benefits many patients with cardiovascular disease. ACE inhibitors are generally assumed to be equally effective, but this has never been fully verified in clinical trials.

What this study adds: Studying the association among ACE inhibitors after myocardial infarction demonstrated similarity in clinical outcome and supports a dosage-response relationship. Therefore, for long-term benefits for patients who need treatment with an ACE inhibitor, a focus of treatment at the recommended dosage is most important and not which ACE inhibitor is used.

Aim: Therapy with angiotensin-converting enzyme (ACE) inhibitors is common after myocardial infarction (MI). Given the lack of randomized trials comparing different ACE inhibitors, the association among ACE inhibitors after MI in risk for mortality and reinfarction was studied.

Methods: Patients hospitalized with first-time MI (n = 16,068) between 1995 and 2002, who survived at least 30 days after discharge and claimed at least one prescription of ACE inhibitor, were identified using nationwide administrative registries in Denmark.

Results: Adjusted Cox regression analysis demonstrated no differences in risk for all-cause mortality, but patients using captopril had higher risk of reinfarction (hazard ratio 1.18, 95% confidence interval 1.05, 1.34). However, following adjustment for differences in used dosages, all ACE inhibitors had similar clinical efficacy. Risk of all-cause mortality: trandolapril (reference) 1.00, ramipril 0.97 (0.89, 1.05), enalapril 1.04 (0.95, 1.150), captopril 0.95 (0.83, 1.08), perindopril 0.98 (0.84, 1.15) and other ACE inhibitors or angiotensin II receptor blockers (ARB) 1.06 (0.94, 1.19). Reinfarction: trandolapril (reference) 1.00, ramipril 0.98 (0.89, 1.08), enalapril 1.04 (0.92, 1.17), captopril 1.05 (0.89, 1.25), perindopril 0.96 (0.81, 1.14) and other ACE inhibitors or ARB 0.99 (0.86, 1.14). Furthermore, the association between ARBs and clinical events was similar to ACE inhibitors (trandolapril reference): all-cause mortality 0.99 (0.84, 1.16) and recurrent MI 0.99 (0.83, 1.19).

Conclusions: Our results suggest a class effect among ACE inhibitors when used in comparable dosages. Focus on treatment at the recommended dosage is therefore most important, and not which ACE inhibitor is used.

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Figures

Figure 1
Figure 1
Unadjusted Kaplan–Meier curves for mortality according to different angiotensin-converting enzyme (ACE) inhibitors (exposure groups) among patients who claimed a prescription for an ACE inhibitor within 30 days from discharge after myocardial infarction
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