[Analysis of the causes of flap XXXX after head and neck reconstruction].

@entity1 @entity135 @entity455 @entity101 @entity6 @entity39 @entity254 @entity460
OBJECTIVE: To analyze the causes of the @entity455 and @entity39 of free flaps used for reconstruction of defects following @entity135 resection and the managements of these issues. METHODS: A total of 850 cases with @entity135 who underwent free flap reconstruction from October 2010 to April 2014 were studied retrospectively. The risks for @entity455 and @entity39 were analyzed with one-factor analysis and multivariate analysis. RESULTS: The total success rate of 95.1% (808/850) for the free flap reconstruction was obtained. Twelve flaps due to poor blood supply indicated during operation were replaced by other free flaps. Among 73 flaps with @entity455 , 31 flaps were salvaged by surgical exploration and subcutaneous injection of low molecular heparin @entity460 . Obesity, smoking, preoperative radiotherapy and surgeon's experience, rather than age, @entity101 and @entity6 , were the risk factors of @entity39 . Two-vein @entity254 had a higher success rate than one-vein @entity254 . CONCLUSIONS: The @entity39 rate of free flaps can be reduced by the choice of suitable flaps, subtly preparation of flaps, carefully vascular @entity254 , and prompt perioperative managements. The two-vein @entity254 is recommended. @entity6 , @entity101 and elderly @entity1 are not the contraindications for free flap reconstruction.
