Abstract
Minimal access aortic valve replacement has become routine in many institutions. Aim of this study was to compare the clinical outcomes between conventional and minimal access aortic valve replacement. We retrospectively analysed the data of 2103 patients who underwent primary, isolated aortic valve replacement (AVR) in our institution between January 2001 and May 2012 with a minimal access AVR (MAAVR) via the upper partial ministernotomy approach (n = 936) or conventional AVR (CAVR) via the full sternotomy approach (n = 1167). After propensity score matching considering potential confounders [age, sex (female), weight, height, preoperative serum creatinine level, previous myocardial infarction, LV-EF and aortic valve pathology (isolated AS)], 585 matched patients were included in each group. Mean age (65 ± 10.5 vs 65.7 ± 11.5 years, P = 0.23), gender (females 37.2%, P = 0.9), aortic cross-clamp time (65.6 ± 18.4 vs 64.3 ± 19.8 min, P = 0.25) and postoperative blood loss [median (IQR) 400 (224-683) vs 400 (250-610) ml, P = 0.83) were similar in MAAVR and CAVR group. Thirty-day mortality was also not significantly different (1.5 vs 1.7%, P = 0.74, respectively). In contrast, CPB times were significantly longer in MAAVR (93.5 ± 2...Continue Reading
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