Laryngeal trauma vs length of intubation.
The frequency histograms of six patients' laryngographs were studied pre- and post-endotracheal intubation. The changes were correlated with the length of intubation. The post-operative hoarse voice was seen as an increase in the spread of the lower frequencies, and an increase in the fundamental frequency. The latter change was thought to be a subconscious compensation for the hoarseness. The increased lower frequency spread as measured by standard deviation was directly proportional to the length of intubation.
Department of Otolaryngology, University Hospital of Wales, Health Park, Cardiff.
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D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006685:Hoarseness / Q000209:etiology; D006801:Humans; D007442:Intubation, Intratracheal / Q000009:adverse effects*; D007830:Larynx / Q000293:injuries* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D013997:Time Factors