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  • Title: Effect of angiotensin converting enzyme inhibitors and beta-blockers on left ventricular remodeling after coronary artery bypass graft surgery.
    Author: Maruyama Y, Masaki N, Sato S, Kirimura M, Toyama K, Yuhara M, Sasaki O, Kamiyama T, Nishioka T, Ito H, Yoshimoto N.
    Journal: Int Heart J; 2008 Jul; 49(4):385-90. PubMed ID: 18753722.
    Abstract:
    Preventing left ventricular (LV) remodeling after coronary artery bypass graft surgery (CABG) is important to avoid long-term congestive heart failure. The present study evaluated the effects of angiotensin converting enzyme inhibitors (ACEIs) and beta-blockers on LV remodeling. Twenty-three patients with angina pectoris and 36 with old myocardial infarction underwent CABG. We assessed end diastolic volume index (EDVI), end systolic volume index (ESVI), and ejection fraction (EF) using left ventriculography before and after CABG. Changes in EDVI, ESVI, and EF were studied in the ACEI, beta-blocker, and control groups. Although EDVI was reduced in the ACEI group, ESVI and EF improved only slightly, whereas in the group given beta-blockers, ESVI was reduced, EF improved, and EDVI was minimally reduced. These results indicate that ACEIs and beta-blockers both protect against LV remodeling, although through different mechanisms.
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