school
Macau Periodical Index (澳門期刊論文索引)
- Author
- Lei, Ka Weng；Liu, Shui Ming；Chan, Mei Hang；Chan, Seng Koi；Cheong, Kun Chio
- Title
- Comparison of effects on voice of carbon dioxide laser and cold knife microlaryngology techniques for vocal fold polyps in VHI and voice analysis
- Journal Name
- 鏡湖醫學
- Pub. Info
- 2016年12月, 總第35期, 第16卷第2期, pp. 50-52
- Link
- http://www.kwh.org.mo/download/med35.pdf
- Keyword
- Endolaryngeal microlaryngosurgery；Phononosurgery；Carbon dioxide laser；Vocal polyp
- Abstract
- Objective：To compare the effects on voice of endolaryngeal microsurgery (EMS) with cold instruments and a new method, ‘‘carbon dioxide laser (CO2 Laser)’’ for vocal fold polyps. Methods：Twenty-five patients with vocal fold polyps suffering from dysphonia who were treated in Macau Kiang Wu Hospital, Department of Otolaryngology Head and Neck Surgery were included in the study. Voice analysis was performed in a soundproof room, holding the microphone 15 cm away from the patients mouth and by recording a sustained [a,e,i,o,u] vowel for at least 5 seconds. Fundamental frequency (F0), Jitter and Shimmer parameters were evaluated in terms of vocal analysis. All patients were asked to fill in a questionnaire, to discuss the voice handicap index (VHI) after adequate explanation. EMS was performed with a carbon dioxide laser and cold knife on 15 and 10 patients, respectively. Patient follow-up was performed 1 week, 2weeks and 4weeks after surgery. Changes in F0, Jitter and Shimmer values were measured and recorded. VHI was also completed and reassessed. Results：Postoperatively, there was no significant difference in VHI scores between two groups (P>0.05). There was no significant difference in voice analysis values between two groups postoperatively, (P>0.05). Conclusion：In the treatment of vocal polyps, EMS with both CO2 laser and traditional cold knife is effective. Paragraph Headings： 1. Information 2. Patients and methods 3. Results 4. Discussion Tables： 1. Comparison of postoperative VHI scores and acoustic voice analysis parameters for both groups