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- W1541363229 abstract "Background There are numerous factors that may contribute to microvascular free flap failure. Although technical issues are dominant factors, patient and clinical characteristics are also contributory. The aim of this study was to investigate non‐technical variables associated with microsurgical free flap failure using a multi‐institutional dataset. Methods Utilizing the American College of Surgeons' National Surgical Quality Improvement Program (NSQIP) database, we identified all patients who underwent microvascular free tissue transfer from 2005 through 2009. Univariate analysis was performed to determine the association of flap failure with the following factors: age, gender, ethnicity, body mass index, intraoperative transfusion, diabetes, smoking, alcohol, American Society of Anesthesiologists classification, year of operation, operative time, number of flaps, and type of reconstruction. Factors with a significance of P < 0.2 in the univariate analysis were included in the multivariate logistic regression model to identify independent risk factors. Results A total of 639 patients underwent microsurgical free flap reconstruction with 778 flaps over the 4‐year study period; 139 patients had two free flaps during the same operation. The overall incidence of flap failure was 4.4% (34/778) (95% confidence interval [CI]: 3.0%, 6.2%). Operative time was identified as an independent risk factor for free flap failure. After adjusting for other factors, those whose operative time was equal to or greater than the 75th percentile (625.5 min) were twice as likely to experience flap failure (AOR 2.09; 95% CI: 1.01–4.31; P = 0.045). None of the other risk factors studied were significant contributors. Conclusions In this series, the overall flap loss rate of was 4.4%. Operative time was a significant independent risk factor for flap failure. © 2014 Wiley Periodicals, Inc. Microsurgery 35:6–12, 2015." @default.
- W1541363229 created "2016-06-24" @default.
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- W1541363229 date "2014-01-16" @default.
- W1541363229 modified "2023-10-05" @default.
- W1541363229 title "Analysis of risk factors associated with microvascular free flap failure using a multi-institutional database" @default.
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- W1541363229 doi "https://doi.org/10.1002/micr.22223" @default.
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