Medialization of paralyzed vocal fold does not increase respiratory resistance measured by impulse oscillometry

Antti Saarinen, Anssi Sovijärvi, Lauri Karhumäki, Heikki Rihkanen

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Abstrakti

Injection laryngoplasty restores voice in subjects with unilateral vocal fold paralysis, but knowledge of its effects on airflow dynamics is limited. Impulse oscillometry (IOS) is a non-invasive technique to investigate airway resistance. It is easily performed during normal breathing. A prospective study was conducted in order to investigate the effects of autologous fascia injection on airflow dynamics. IOS, flow-volume spirometry, acoustic analysis of voice, voice handicap index (VHI) questionnaire and subjective dyspnoea score were recorded before and 5-11 months after the operation. There was no significant change in respiratory resistance (Rres) or other variables of IOS. FEV1/FVC decreased from 0.80 to 0.77 (P = 0.02), but other variables of spirometry did not change significantly. Acoustic properties of voice (noise-to-harmonics ratio, shimmer, jitter, maximal phonation time) and VHI improved significantly. No change in dyspnoea occurred. In conclusion, medializing of a paralysed vocal fold improves voice, but does not have a clinically significant adverse effect on breathing. Flow-volume spirometry is more sensitive than IOS to changes in airflow dynamics after medialization.
Alkuperäiskielienglanti
LehtiEuropean Archives of Oto-Rhino-Laryngology
Vuosikerta264
Numero11
Sivut1323-1327
Sivumäärä5
ISSN0937-4477
DOI - pysyväislinkit
TilaJulkaistu - 2007
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

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