Acoustical Effects of Short-Term Endotracheal Intubation.
- Author:
Soon Yuhl NAM
1
;
Sung Geun BONG
;
Young Il SEO
;
Hwa Kyung YU
;
Seung Joo YOO
Author Information
1. Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. ent@www.amc.seoul.kr
- Publication Type:Original Article
- Keywords:
Endotracheal intubation;
Laryngeal trauma;
Acoustic analysis
- MeSH:
Acoustics;
Anesthesia;
Anesthesia, General;
Deglutition Disorders;
Ear;
Female;
Hoarseness;
Humans;
Intubation;
Intubation, Intratracheal*;
Male;
Noise;
Vocal Cords;
Voice
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
1999;42(10):1295-1299
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Background and Objective: Patients often complain of transient hoarseness and dysphagia after undergoing procedures requiring endotracheal intubation. Transient voice changes associated with endotracheal intubation are generally assumed to be a result of vocal fold trauma. This study was designed to characterise vocal changes aftershort-term endotracheal anesthesia using acoustic analysis for monitoring the presence of and recovery from intubation trauma. MATERIAL AND METHODS: Vocal functions of 25 patients undergoing chronic ear surgeries using general anesthesia with endotracheal intubation were analyzed preoperatively and postoperatively. Fundamental frequency, jitter, shimmer, noise to harmonic ratio were measured to assess vocal function. RESULTS: In male, fundamental frequency, jitter, shimmer, noise toharmonic ratio did not differ significantly across recording sessions, although certain predictable trends were apparent. In female, statistically significant decrement in fundamental frequency and increment in jitter and shimmer were found postoperatively (p<0.05). One day after extubation, these change were return to preoperative values. CONCLUSION: Even short-term endotracheal intubation affects acoustic-characteristics of voice and acoustic analysis are sensitive to identify and monitor minor laryngeal trauma due to endotracheal intubation.
