The voice Analysis in Laryngeal Carcinoma Patients Undergoing Partial Laryngectomy / 听力学及言语疾病杂志

ABSTRACT

Objective The purpose of this study is to evaluate the relationship between different types of partial laryngectomy and post-operative voice quality by investigating the preserved voice function and its change after the surgery.Methods The computer multimedia program of Dr.Speech science for Windows was used to obtain the acoustic parameters from 30 normal adults and 55 patients operated 5 years ago with partial laryngectomy 20 cases of horizontal partial laryngectomy,18 cases of vertical partial laryngectomy,and 17 cases of extended partial laryngectomy.Within 5 years after operation,F0,jitter,shimmer,NNE,F1 and F2 were measured several times and were compared.Results For the patients the fundamental frequency was lower and jitters,shimmer,NNE were higher compared to the control group.The parameters of jitter,shimmer and NNE of patients with supraglottic horizontal laryngectomy were the lowest while for those with vertical partial laryngectomy they were the highest.Compared were the formant frequencies(F1)of vowels /a/,/i/,/u/ in group supraglottic horizontal laryngectomy and the normal gruop.The former was significantly higher.Conclusion Close relationships were noted in the different surgery methods and the voice qualities after partial laryngectomy.The voice functions of horizontal partial laryngectomy were the best while vertical partial laryngectomy the worst.The acoustic analysis can be used to assess the postoperative voice quality,and the data can guide the rehabilitation and training in terms of the improvement of their quality of life(QOL) after surgery.