SLPCohortJournal of voice : official journal of the Voice Foundation2025

The Role of Laryngology Evaluation in Parkinson Dysphonia Therapy: Process Evaluation and Outcomes.

John L Wilson, Andy Goings, George Ashji and 3 others

PMID 40993025

WHAT IT FOUND

Requiring laryngology clearance before Parkinson disease voice therapy delayed the start from SLP intake to therapy, 117 days versus 46 days when clearance happened during therapy.

Laryngoscopy findings and procedures did not differ.

Key findings

01Patients who had laryngology clearance before voice therapy waited a mean 117 days from SLP intake to therapy, versus 46 days for those who inadvertently saw a laryngologist during therapy.

02The sole patient with a vocal fold lesion had a benign-appearing vocal process granuloma that resolved without intervention.

03Laryngoscopy findings and voice-directed procedures did not differ between patients cleared before therapy and those cleared after therapy started.

STILL TO COME

How it was doneWhat they foundWhat it means for SLPs

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What it does not show

The study was retrospective and included only 33 patients, with 4 in the delayed-clearance comparison group. The two groups were imbalanced, so small differences in laryngoscopy findings or procedures might not have been detected. The study was done at one academic institution, and the sample had limited sociodemographic diversity. Patients with Parkinson-plus syndromes, head and neck cancer or radiotherapy, or predominant dysphagia or airway complaints were excluded. The study did not evaluate voice therapy outcomes or procedural outcomes, so it cannot show how timing affected speech improvement or quality of life. Clinician time away, patient factors, or payer factors not captured in the records may have influenced encounter timing.

Declared interests

The authors declared no conflicts of interest and no competing financial interests or personal relationships.

The easy way to misread this

Do not read this as proof that laryngoscopy can be skipped before voice therapy. The study compared care timelines in 33 patients, including only 4 who saw a laryngologist after therapy started, and it did not measure voice therapy outcomes or safety of starting before clearance.

Read it on PubMed →