• J. Cardiothorac. Vasc. Anesth. · Dec 2019

    Observational Study

    Intermittent Cross-Clamp Fibrillation Versus Cardioplegic Arrest During Coronary Surgery in 6,680 Patients: A Contemporary Review of an Historical Technique.

    • Priyadharshanan Ariyaratnam, Alexander Cale, Mahmoud Loubani, and Michael E Cowen.
    • Department of Cardiothoracic Surgery, Castle Hill Hospital, Cottingham, United Kingdom. Electronic address: priyadariyaratnam@yahoo.co.uk.
    • J. Cardiothorac. Vasc. Anesth. 2019 Dec 1; 33 (12): 3331-3339.

    ObjectiveMyocardial management during on-pump coronary artery bypass grafting (CABG) surgery includes aortic cross-clamping followed by fibrillation (XCF) and aortic cross-clamping followed by diastolic cardioplegia (cardioplegia). The authors wished to compare in-hospital and survival outcomes between these procedures.DesignA retrospective observational study utilizing propensity matching.SettingTertiary Referral Centre for Heart Surgery.ParticipantsA total of 8,875 consecutive patients undergoing CABG surgery between August 1999 and February 2018.InterventionsAfter 1:1 matching, the authors had 3,340 patients in the cardioplegia group and 3,340 in the XCF group.Measurements And Main ResultsBaseline characteristics were not significant between the matched cardioplegia and XCF groups. The XCF group had shorter pump times (61.8 minutes +/-26.8 v 74.7 minutes +/-29.5, p < 0.0001) and shorter cross-clamp times (27.80 minutes +/-10.5 v 44.44 minutes +/-18.0, p < 0.0001) compared with the cardioplegia group despite a similar median number of distal anastomoses (3 v 3, p = 0.08). After surgery, atrial arrhythmias (32% v 36%, p = 0.01) and inotropic requirement (25% v 28%, p = 0.006) were less in the XCF group compared with the cardioplegia group, respectively. Other postoperative outcomes (such as mortality and cerebrovascular events) were not statistically different. There was a mean survival advantage in using cardioplegia compared with XCF (15.4 years versus 14.7 years, log-rank, p = 0.014; 10-year survival 64% v 61% and 18-year survival 38% v 34%).ConclusionThis is the largest analysis of XCF. XCF does not adversely affect in-hospital outcomes. Long-term results demonstrate cardioplegic arrest may convey a survival advantage that would preclude routine XCF in the modern era.Copyright © 2019 Elsevier Inc. All rights reserved.

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