Early swallowing intervention after free flap reconstruction for oral cancer: A systematic review and meta-analysis.

[OBJECTIVES] This study aimed to summarize the state of current literature and evaluate evidence for timing, methods, and effects of early intervention in patients after free flap reconstruction.

[METHODS] A comprehensive search was conducted in nine databases. The methodological quality of literature was assessed according to the JBI Critical Appraisal Tools.

[RESULTS] Eight studies were finally included. Most studies started the intervention within 1 to 2 weeks after surgery with multiple swallowing training measures. The results of meta-analysis showed that swallowing intervention could improve swallowing function (SMD = -1.03, 95%CI [-1.37, -0.69], Z = 5.95, p < 0.01) and the quality of life (SMD = 1.52, 95%CI [0.97, 2.07], Z = 5.43, p < 0.01).

[CONCLUSION] Early swallowing intervention can improve patients' swallowing function and short-term quality of life. We can only summarize the basic consensus of the studies on early swallowing intervention, and rigorous trials are needed in the future.