Long-Term Retention of Voice Therapy Outcomes After Discharge

Long-term retention of treatment effects following discharge from voice therapy remains unclear. This study examined relapse rates 4-5 years after completion of voice therapy.

A prospective observational study was conducted with 43 patients who completed voice therapy between 2019 (in person) and 2020 (telehealth). Primary outcomes included the voice handicap index-10 (VHI-10), the patient perception of voice therapy questionnaire, and additional questions regarding current vocal function.

Current VHI-10 scores (M = 15.3) were significantly lower than baseline scores (M = 24.2; P < 0.001). The mean amount of voice therapy completed per individual was 2.8 sessions. Most participants (77%) reported that voice therapy was helpful, with 63% describing improved voice after discharge, 30% reporting stability, and 7% reporting relapse. Nearly half (49%) indicated that transferring skills to connected speech was the most challenging aspect of therapy, while 70% identified specific exercises as the most useful. At follow-up, 28% continued to use therapy exercises, and 77% reported being able to meet their daily vocal demands.

Four to five years after voice therapy, 23% of patients reported current vocal limitations, and 7% reported relapse. These rates are lower than those previously reported, suggesting favorable long-term outcomes following voice therapy.