Abstract:Abstract:ObjectiveTo evaluate the postoperative vocal function in patients with T1aN0M0 glottic cancer.MethodsEvaluation of the voice quality was performed in 70 postoperative patients with T1aN0M0 glottic cancer. SPSS 17.0 statistical analysis software was used.ResultsOf all the 70 patients with glottic squamous cell carcinoma at T1aN0M0, 21 cases were surgically treated with CO2 laser and 49 with lowtemperature plasm radiofrequency.The median survival time of CO2 laser group was 35 months and that of the lowtemperature plasm radiofrequency group was 26 months.Subjective perceptual evaluation of voice quality showed that the degree of voice disturbance in the CO2 laser group was less than that of the lowtemperature plasm radiofrequency group.Objective analyses revealed no difference in fundamental frequency (F0) between the two groups but consistency of parameter of hoarseness (G) and the other objective parameters. Pairwise comparisons showed that Jitter had the highest sensitivity and correlation test found that noisetoharmonics ratio had the best correlation with G.ConclusionWith good consistency between subjective perceptual and objective parameters, the patients surgically treated with CO2 laser have better voice quality than those treated with lowtemperature plasm radiofrequency.