Effectiveness of Voice Therapy in Treating Vocal Fold Nodules: A Systematic Review

Despite growing evidence of the benefits of voice therapy, there is a need for further research to establish standardized treatment protocols, evaluate long-term outcomes, and explore psychological factors in patient care. This systematic review aimed to evaluate the effectiveness of various voice therapy interventions and their impact on vocal parameters in the management of vocal fold nodules (VFNs). The present study followed PRISMA guidelines to evaluate the effectiveness of voice therapy for treating VFNs. Key outcomes measured included voice therapy interventions, Voice Handicap Index (VHI), fundamental frequency (Fo), jitter, shimmer, and other relevant voice-related parameters. A comprehensive search was conducted across PubMed, Cochrane Library, Scopus, and Web of Science databases, with a dual screening process to ensure high-quality selection. Data extraction and quality assessment were carried out independently by two researchers using established tools like the Cochrane Risk of Bias Tool and Newcastle-Ottawa Scale. The studies reviewed consistently highlight the effectiveness of various voice therapy techniques in treating VFNs. Methods like the ABCLOVE exercise, resonant voice therapy, and DoctorVox therapy have led to significant improvements in both vocal and psychological outcomes. Incorporating psychological evaluations, family-centered approaches, and consistent vocal hygiene practices further boosts the success of voice therapy. Additionally, studies emphasize the long-term benefits of voice therapy, even in cases with remaining nodules, and stress the importance of personalized care plans. Voice therapy is a key part of VFN treatment, showing significant benefits for both vocal and psychological health. While evidence supports its efficacy, further large-scale, standardized studies are needed to confirm these findings and explore long-term outcomes and psychological factors. Tailoring interventions to individual needs, including psychological support and family involvement, can enhance treatment effectiveness and patient outcomes.