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  • Title: 'No touch' techniques for porcelain ascending aorta: comparison between cardiopulmonary bypass with femoral artery cannulation and off-pump myocardial revascularization.
    Author: Lev-Ran O, Ben-Gal Y, Matsa M, Paz Y, Kramer A, Pevni D, Locker C, Uretzky G, Mohr R.
    Journal: J Card Surg; 2002; 17(5):370-6. PubMed ID: 12630532.
    Abstract:
    BACKGROUND: Detection of severe atherosclerotic ascending aorta during coronary artery bypass grafting requires alterations in the standard surgical technique to reduce the probability of stroke-related atheroembolization. Off-pump coronary artery bypass grafting (OPCAB) confers the benefits of avoiding aortic cannulation and clamping, and may therefore attenuate this risk. METHODS: OPCAB (n = 41) was compared to cardiopulmonary bypass (CPB) using femoral arterial cannulation and hypothermic fibrillatory arrest (n = 15), in patients with porcelain ascending aorta undergoing myocardial revascularization. In both groups, a 'no touch' technique was applied by avoiding aortic cannulation and clamping. Proximal anastomoses on the atherosclerotic aorta were avoided by arterial grafting, (in-situ or T-graft configurations) in all cases. RESULTS: Operative mortality was comparable (2.4% and 6.6% in the OPCAB and CPB groups respectively, p = NS). The rate of adverse neurological events, (two strokes and one transient ischemic attack), was higher in the CPB group (p = 0.0164). Based on brain CT, the nature of the recorded stroke suggested retrograde emboli. Three year survival (Kaplan-Meier) for the OPCAB and CPB groups was 86.7% and 81.3%, respectively (p = NS). Occurrence of late neurological adverse events during follow-up (8-51 months) was similar. CONCLUSIONS: In patients with porcelain ascending aorta undergoing myocardial revascularization, neurological outcome of OPCAB patients is better than CPB using femoral artery cannulation.
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