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Off-pump Skeletonized Versus Pedicled Left Internal Mammary Artery Grafting: Mid-term Results.

Authors:
Xiaotian Sun Jiechun Huang Wenshuo Wang Shuyang Lu Kai Zhu Jun Li Hao Lai Changfa Guo Chunsheng Wang

J Card Surg 2015 Jun 14;30(6):494-9. Epub 2015 Apr 14.

Department of Cardiac Surgery, Zhongshan Hospital of Fudan University & Shanghai Institute of Cardiovascular Diseases, Shanghai, P. R. China.

Background: Skeletonization of the internal mammary artery for single left internal mammary artery (LIMA) use remains controversial. We sought to elucidate the effect of different harvesting techniques applied in single LIMA grafting.

Method: Between January 2006 and January 2012, 982 patients undergoing off-pump coronary artery bypass with pedicled LIMA conduits (P Group) and 928 patients undergoing the same operation with skeletonized LIMA conduits (S Group) were enrolled. The length and blood flow of the conduits, and in-hospital and mid-term outcomes with one-year postoperative graft angiographic results were analyzed and compared between groups.

Results: Twenty-five (2.7%) patients in the S group died in hospital, compared with 26 (2.6%) in the P group, with similar rates of sternal wound infection, chest wall pain, and low-output syndrome. Although the length and blood flow of conduits were increased in the S Group, postoperative conduit patency was similar between groups (p = 0.470). During a median follow-up of 32.2 months, the groups showed similar total survival (88.3 ± 3.2%, S Group; 85.5 ± 2.0%, P Group; p = 0.118) and cardiac event-free survival (82.7 ± 3.3%, S Group; 80.3 ± 2.0%; P Group; p = 0.129), with similar postoperative complications.

Conclusions: Skeletonization of single LIMA has no extra benefit in early or mid-term outcomes, suggesting no advantage over the pedicled technique.

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http://dx.doi.org/10.1111/jocs.12551DOI Listing
June 2015

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