Airflow study of pathologic larynges using a constant temperature anemometer: further experience.
Phonatory airflow was recorded in 361 laryngeal disease patients and 59 normal subjects by using a constant temperature anemometer to measure Isshiki's proposed parameter, the AC/DC percentage. The pathologic groups displayed AC/DC percentage values smaller than those of the normal group. The value differentials observed among the various diseases suggest that the AC/DC percentage may reflect the vibrational capacity of the vocal cords.
Kitajima
K
K
Department of Otolaryngology, Shiga University of Medical Science, Otsu, Japan.
Fujita
F
F
D005260:Female; D006801:Humans; D007818:Laryngeal Diseases / Q000503:physiopathology*; D007822:Laryngeal Neoplasms / Q000503:physiopathology; D008297:Male; D010699:Phonation / Q000502:physiology*; D012123:Pulmonary Ventilation / Q000502:physiology*; D012016:Reference Values; D013696:Temperature; D014827:Vocal Cords / Q000502:physiology / Q000503:physiopathology*