Aerodynamic Studies of Voice Disorders in Vocal Attack

Yujiro Ohtsu, Shigenobu Iwata, Kenji Takeuchi, Mikiko Ochi, Yoshihiro Iwata, Hitoshi Toda, Hisashi Kuroyanagi, Yasuo Nakanishi

Research output: Contribution to journalArticlepeer-review


To clarify the phonation dynamics in voice disorders, we aerodynamically evaluated phonation during vocal attacks in 68 patients with vocal cord lesions and 12 controls with normal larynges. The patients with polypoid cords or glottic cancer showed shortening of the time between the increase in the subglottic pressure and the vocal attack (PS-I time), the rise time, a high subglottic pressure and hard attacks. Patients with recurrent nerve palsy showed slight shortening in the PS-I time, the rise time, a slightly higher subglottic pressure than in the control and patients with mild attacks.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalPractica oto-rhino-laryngologica. Suppl.
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology


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