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Is gender a risk factor for bilateral internal thoracic artery grafting? A twenty-year follow-up
Dmitry Pevni1, Amir Kramer1, Ariel Farkash1
1Department of Cardiothoracic Surgery, Sackler Faculty of Medicine, Tel-Aviv Sourasky Medical Center, Tel-Aviv University, Tel Aviv, Israel.
Background:
Although bilateral internal thoracic artery (BITA) grafting is associated with improved survival, many surgeons are reluctant to use this technique, especially in female patients, due to its greater complexity and potential increased risk of sternal infection. The aim of this study was to compare the outcomes of male and female patients who underwent BITA grafting.
Methods:
We evaluated at the early outcome and late mortality, 551 female versus 2525 male patients who underwent isolated BITA grafting between January 1996 and December 2011. To adjust for differences in demographic and clinical characteristics, a multivariate risk analysis and propensity score matching were performed. Kaplan-Meier analysis was performed for the entire cohort and for the matched cohort.
Results:
Female patients were older and were more likely than males to have congestive heart failure, unstable angina pectoris, and diabetes. Sternal infection was more frequent in females than males (3.3% vs. 1.8%; p = .04). Differences were not observed in operative mortality (2.9% vs. 1.9%; p = .15) and stroke incidence (3.4% vs. 2.6; p = .30). After multivariate risk analysis and propensity score matching, the female gender was not found to be a predictor of worse outcomes. There was no difference in median survival among female and male patients (14.3 and 14.2 years, respectively; p = .68).
Conclusion:
Our results support the routine use of BITA grafting in proper selected female patients who undergo myocardial revascularization.
