Visual biofeedback decreases paradoxical vocal fold motion (
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Paradoxical vocal fold motion (PVFM) is a common condition where the vocal folds inappropriately adduct during inspiration. This results in dyspnea and occasionally significant distress. Researchers recently found out in a study that visual biofeedback effectively reduces short-term subjective symptoms and asthma medication use and gives positive results in paradoxical vocal fold motion (PVFM) patients.

In a study published by the Journal of Otolaryngology-Head & Neck Surgery researchers aimed to examine the efficacy of surgeon performed visual biofeedback as first-line treatment for PVFM.

Adult patients referred for possible PVFM and congruent laryngoscopy findings over a two-year period were included. Patients were excluded if they presented in acute distress, had an alternate diagnosis to explain symptomology and/or coexisting untreated lower respiratory pathology. Patients underwent immediate surgeon-performed visual biofeedback on the same visit day. The primary outcome of interest was change in Dyspnea Index (DI) scores pre-and post-intervention 3?months follow-up. The secondary outcome measured was a change in asthma medication use from baseline to follow-up.

Of 34 patients presenting, 25 met inclusion criteria. Approximately 48% of patients had a diagnosis of well-controlled asthma at presentation and co-morbid psychiatric diagnoses were common. Pre- and post-intervention analysis showed significant improvement in DI scores and reduction in bronchodilator use.

In particular, the data suggests that visual biofeedback effectively reduces short-term subjective symptoms and asthma medication use.

Source: https://doi.org/10.1186/s40463-021-00495-0
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