Introduction
This study aimed to evaluate the safety and feasibility of scalp acupuncture (SA) on swallowing function in patients with post-stroke dysphagia (PSD).
Methods
China National Knowledge Infrastructure (CNKI), Wanfang Data, VIP Database, SinoMed, PubMed, Cochrane Library, Embase, and Web of Science were searched from database inception to 26 April 2025. The risk of bias was assessed using Cochrane Risk of Bias 2.0 (RoB 2.0). Statistical analysis was performed using Stata 18.0.
Results
Eighteen eligible papers, involving 1410 patients with PSD, were included. Meta-analysis showed that compared to conventional interventions alone, SA combined with conventional interventions significantly reduced water swallowing test (WST) scores [SMD=-1.00, 95 % CI (-1.35, -0.66), Z=-5.701, P = 0.000], reduced standardized swallowing assessment (SSA) scores [MD=-3.78, 95 % CI (-4.89, -2.68), Z=- 6.692, P = 0.000], increased swallowing quality of life (SWAL-QOL) scores [MD = 33.26, 95 % CI (12.79, 53.73), Z = 3.185, P = 0.001], reduced videofluoroscopic dysphagia scale (VDS) scores [MD = 6.28, 95 % CI (4.01, 8.55), Z = 5.419, P = 0.000], and increased Barthel index (BI) scores [MD = 11.62, 95 % CI (9.76, 13.48), Z = 12.248, P = 0.000]. The WST scores, SSA scores, and SWAL-QOL scores exhibited high heterogeneity. A funnel plot suggested no publication bias in WST scores (t = 0.78, P = 0.457). Sensitivity analysis showed strong robustness in the meta-analysis results for WST scores and SSA scores, while potential sources of heterogeneity were identified in SWAL-QOL scores. The quality of evidence was low for SWAL-QOL scores and high for the remaining scores.
Conclusion
Compared with conventional interventions alone, SA combined with conventional interventions has more advantages in improving the scores in WST, SSA, and SWAL-QOL in the treatment of PSD. However, the reliability of this conclusion is constrained by the low quality of evidence for outcome measures, the lack of regular follow-up, and the unclear risk of adverse events. To consolidate research findings and provide more reliable clinical guidance, future studies should prioritize conducting multicenter double-blind trials that incorporate regular follow-up, objective assessments, and standardized protocols.
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