Study of risk factors in patients where pectoralis major flap was used in head and neck onco-reconstruction
Introduction The pectoralis major myocutaneous (PMMC) flap is a workhorse flap used in non-microvascular centers, as well as in patients who underwent a salvage procedure resulting in free flap loss. The complication rates documented in literature are wide, between 13% and 60% and risk factors are multiple. Materials and methods We performed a retrospective study of 111 patients where the PMMC flap was used for reconstruction of patients suffering from head and neck cancers. The risk factors were documented and complications were grouped into four groups: group A with all complications, group B with flap-related complications, group C with major complications, group D with minor complications and group E with non-flap related complications. The association between risk factors and complications was calculated with the use of the chi-squared test and t-test for equality of means. Risk was calculated with the odds ratio. Results Tobacco use was statistically significant in groups A, B, C and E at p<0.05. The bipaddle PMMC flap had more than a 5 times increased risk of flap-related complications. Conclusions Complications are associated with smoking, diabetes mellitus, hypoalbuminemia, anemia, use of the PMMC flap together with DP flap and bipaddlel PMMC flap alone.