https://scholars.lib.ntu.edu.tw/handle/123456789/483624
Title: | Effects of Surgery on the Phonation Threshold Pressure in Patients With Vocal Fold Polyps | Authors: | TYNG-GUEY WANG Shau, Y.-W. YIO-WHA SHAU |
Issue Date: | 2010 | Journal Volume: | 109 | Journal Issue: | 1 | Start page/Pages: | 62-68 | Source: | Journal of the Formosan Medical Association | Abstract: | Background/Purpose: There are few objective measurements to assess the results of surgery for vocal fold polyps. This study investigated the effects of surgery on the phonation threshold pressure (PTP) in patients with vocal fold polyps. Methods: Prospectively, 32 consecutive patients with vocal fold polyps were enrolled. PTP was measured 1 day before and 6 weeks after laryngomicrosurgery, by means of an airflow interruption method. An accelerometer was used to detect the vocal fold vibration instead of using an acoustic signal. Results: In all 32 patients, the average preoperative PTP was 0.51 ± 0.23 kPa, and 6 weeks after surgery, it was 0.28 ± 0.17 kPa; this difference was statistically significant (p < 0.001). Individually, PTP decreased in 31 patients after surgery. PTP increased after surgery in only one patient, from 0.74 to 0.75 kPa. Subjectively, all patients could phonate with less effort after surgery. Use of an accelerometer to sense vocal fold vibration was feasible and made it easier to identify the time point of cessation of vocal fold vibration, which is important for PTP measurement. Conclusion: Laryngomicrosurgery can lower PTP in patients with vocal fold polyps and improve the ease of phonation. PTP is one of the objective measurements for assessing the effects of surgery in patients with vocal fold polyps. Use of an accelerometer to detect vocal fold vibration improved the measurement of PTP. ? 2010 Formosan Medical Association & Elsevier. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-76749090473&doi=10.1016%2fS0929-6646%2810%2960022-8&partnerID=40&md5=77bb909355007438edd28a95d2847676 https://scholars.lib.ntu.edu.tw/handle/123456789/483624 |
ISSN: | 0929-6646 | DOI: | 10.1016/S0929-6646(10)60022-8 | SDG/Keyword: | acoustics; adult; article; clinical article; clinical trial; female; human; larynx surgery; male; microsurgery; phonation; phonation threshold pressure; polyp; postoperative period; preoperative period; pressure; pressure measurement; treatment outcome; vibration; vocal cord disorder; vocal cord polyp; Adult; Equipment Design; Female; Humans; Laryngeal Diseases; Laryngectomy; Laryngoscopy; Male; Middle Aged; Phonation; Polyps; Prospective Studies; Speech Production Measurement; Vocal Cords; Voice Disorders |
Appears in Collections: | 醫學系 |
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