[Voice acoustic study of plasma radiofrequency ablation for the treatment of laryngeal premalignant lesions].

Objective

To study the voice function effect of low temperature plasma radiofrequency ablation in the treatment of patients with laryngeal premalignant lesions. Method:Fifty cases of laryngeal premalignant lesions were treated with low temperature plasma radiofrequency ablation. All of the patients were examined by electronic laryngoscopy and acoustic analysis(F0，Jitter，Shimmer，NNE，HNR) in 2 weeks,1 month,3 months after surgery. Voice acoustic results were compared with a control group of 50 normal adults for the further analysis. Result:Fifty patients with laryngeal premalignant lesions were treated by low temperature plasma radiofrequency ablation.The result showed that 47 patients(94%)were successfully decannulated without serious complications, such as dyspnea, aphonia and anterior glottic stenosis. Acoustic analysis showed that F0,Jitter,Shimmer and NNE were significantly different from normal 2 weeks after surgery（P<0.01）.Voice function recovered weakly 1 month after operation（P<0.05）.There were no significant differences in the vocal parameters between plasma radiofrequency ablation group and control group 3 months after surgery(P>0.05).

Conclusion

Radiofrequency coblation was a safe,minimally invasive and effective surgical method and can be widely used to treat laryngeal premalignant lesions．.