Analysis of the risk factors of vascular crisis after free flap transplantation in oral and maxillofacial region

ObjectiveTo explore the risk factors of vascular crisis after free flap transplantation in oral and maxillofacial region.

MethodsThe clinical data of 226 oral and maxillofacial defects patients repaired by free flap transplantation of forearm flap were retrospectively analyzed.The gender, age, absence or presence of vascular crisis, type of vascular crisis, history of diabetes mellitus, blood glucose level at admission, history of hypertension and average blood pressure at admission were collected, and the risk factors of postoperative vascular crisis were analyzed.

ResultsAmong 226 patients, the vascular crisis in 51 cases were identified, which included 41 cases with venous crisis and 10 cases with arterial crisis.The results of univariate analysis showed that the history of diabetes mellitus and high blood glucose were the influencing factors of the occurrence of vascular crisis(P < 0.01 and P < 0.05).The results of the multivariate logistic regression analysis showed that the history of diabetes mellitus was the risk factor of the occurrence of vascular crisis(OR=4.646, P < 0.01).

ConclusionThe risk of vascular crisis in diabetic patients treated with free flap transplantation is high.For such patients, the free flap should be cautiously used for repair.When it is necessary to use, it is necessary to pay attention to the occurrence of vascular crisis to ensure the survival of flap.