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  • Title: A simplified surgical approach for aortic valve replacement after previous coronary artery bypass grafting.
    Author: Vistarini N, Aubert S, Leprince P, Pavie A.
    Journal: Eur J Cardiothorac Surg; 2009 Aug; 36(2):404-6. PubMed ID: 19560366.
    Abstract:
    Aortic valve replacement (AVR) in patients who have undergone previous coronary artery bypass grafting (CABG) is a challenging redo surgery. We undertook this study to evaluate the early and late outcomes of patients operated upon using a simplified surgical approach. Between January 2001 and December 2005, 2238 patients underwent AVR in our institution. We reviewed retrospectively the 57 patients who had AVR following previous CABG. All patients underwent cardiopulmonary bypass with a mild-to-moderate systemic hypothermia (mean temperature: 29.7 +/- 2.5 degrees C). Patent internal thoracic artery (IMA) grafts were never dissected, controlled or clamped. A mechanical or biological prosthesis was implanted considering the patient's age. The mean cardiopulmonary bypass (CPB) time was 93 +/- 29 min (median: 80 min, range: 43-244 min) and the mean aortic cross-clamp (AoX) time was 63 +/- 18 min (median: 59 min, range: 31-125 min). The early mortality was 10.5% and the late mortality was 9.8% (mean follow-up time: 38 months). The survival was 81% at 5 years and the freedom from major cardiac events was 77%. In conclusion, from our experience, the operating quickness and a simplified approach ('open IMA technique', anterograde cardioplegia, mild-to-moderate hypothermia and minimal dissection of the mediastinal structures) represent two fundamental choices to perform this type of surgery easily, safely and with optimal results.
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