Liu H, Wu DD, Zheng SQ, Zeng ZH, Ding T, Liu ZG, Liu XC. Loop isolation-based uploading preconditioning to protect heart from damage: a proof-of-concept study.
Herz 2019;
45:745-751. [PMID:
31410516 DOI:
10.1007/s00059-019-04845-7]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 06/15/2019] [Accepted: 07/20/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND
Little is known on the role of indirect clamp releasing in coronary artery bypass grafting (CABG). Loop isolation-based uploading preconditioning (LiuPhD) was modified to protect the heart from damage and the question of whether this can attenuate reperfusion injury after global myocardial ischemia was examined.
METHODS
A post-hoc comparative analysis was conducted of a prospective single-arm trial on the use of the LiuPhD strategy for 60 multivessel-disease patients undergoing isolated first-time elective on-pump CABG versus 1:1 propensity score-matched patients from the historical database of the same center.
RESULTS
A total of 120 matched patients had a median age of 62.0 (interquartile range [IQR] 55.8-69.0) years, 27 (22.5%) women, 35 (29.2%) with left main disease, and median follow-up of 18.5 (10.9-35.4) months. The LiuPhD group had shorter post-bypass times than conventional controls (10 [6-13] vs 14 [10-19] mins; p = 0.003). The LiuPhD group had similar needs in terms of composite cardiac-specific interventions (38/60 vs 44/60; p = 0.29). At follow-up of safety, the risk for composite major adverse cardiac and cerebrovascular events was similar between groups (event-free survival: 82.3% vs 73.8%; hazard ratio 1.00 [0.39, 2.54], p log-rank test = 0.99).
CONCLUSION
The LiuPhD strategy is associated with short post-bypass times, comparable risk of myocardial injury, and similar safety compared with conventional direct clamp releasing.
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