Interarytenoid notch height relative to the vocal folds. Pilot study.
We measured interarytenoid notch height (IANH) in 20 young children who required direct laryngoscopy under general anesthesia. By means of a specifically designed instrument, we found that the average IANH approximated 3 mm. Laryngeal incompetence on swallowing or in the presence of gastroesophageal reflux is associated with a low IANH (p < .0001). Therefore, IANH may be a measure of relative laryngeal incompetence.
Smith
R J
RJ
Department of Otolaryngology-Head and Neck Surgery, The University of Iowa College of Medicine, Iowa City.
Neville
M B
MB
Bauman
N M
NM
D000367:Age Factors; D000886:Anthropometry / Q000295:instrumentation; D001193:Arytenoid Cartilage / Q000002:abnormalities / Q000033:anatomy & histology* / Q000502:physiology; D002648:Child; D002675:Child, Preschool; D003413:Cricoid Cartilage / Q000033:anatomy & histology / Q000502:physiology; D003680:Deglutition Disorders / Q000175:diagnosis; D004576:Electromyography; D004864:Equipment and Supplies; D005260:Female; D005471:Fluoroscopy; D005764:Gastroesophageal Reflux / Q000175:diagnosis; D005931:Glottis / Q000033:anatomy & histology / Q000502:physiology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007821:Laryngeal Muscles / Q000033:anatomy & histology / Q000502:physiology; D007828:Laryngoscopy; D007830:Larynx / Q000033:anatomy & histology* / Q000502:physiology; D008297:Male; D010865:Pilot Projects; D012737:Sex Factors; D014743:Videotape Recording; D014827:Vocal Cords / Q000033:anatomy & histology* / Q000502:physiology