Original Research |
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Cepstral peak point analyses of patients recovering from supraglottic laryngectomyZiya Saltürk, Onur üstün, Hüseyin Sarı, Belgin Tutar, Tolgar Lütfi Kumral, Güler Berkiten, Yavuz Uyar. Abstract | | | | Aim: The aim of this study is to evaluate smoothed cepstral peak point and laryngostrobosopic results in patients who underwent supraglottic laryngectomy.
Methods: Ten patients who underwent transcervical supraglottic laryngectomy with bilateral modified radical neck dissection, and who completed at least 12 months of follow-up, were included. All patients underwent laryngostroboscopic evaluation at study commencement; glottal closure and mucosal wave pattern were examined. Voice records were taken at fundamental frequency and smoothed cepstral peak point were analysed. Voice handicap index-10 was requested to be completed. Ten healthy individual constituted control group. Results were compared.
Results: The mean smoothed cepstral peak points were 1.535.91 in the supraglottic laryngectomy group and 4.66.06 in controls, a significant difference. The fundamental frequency ranged from 174.49 to 197.25 Hz in the supraglottic laryngectomy group and from 118.57 to 197.61 Hz in the control group, also a significant difference. Laryngostroboscopic evaluation revealed no significant between-group differences in closure, but the mucosal waves differed significantly. Voice handicap index was significantly lower in supraglottic laryngectomy patients.
Conclusion: Supraglottic laryngectomy reduces smoothed cepstral peak point and affects the mucosal wave, reducing voice quality.
Key words: Cepstral peak point; supraglottic laryngectomy; laryngostroboscopy; vocal quality; voice handicap index
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