Department of Rehabilitation, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taipei, Taiwan.
J Formos Med Assoc. 2010 Jan;109(1):62-8. doi: 10.1016/s0929-6646(10)60022-8.
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.
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.
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.
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.
背景/目的：评估声带息肉手术效果的客观测量方法较少。本研究旨在探讨手术对声带息肉患者的声门闭阻压（PTP）的影响。
前瞻性纳入 32 例声带息肉患者。采用气流中断法，在声带显微手术后 1 天和 6 周分别测量 PTP，使用加速度计而非声信号检测声带振动。
32 例患者的平均术前 PTP 为 0.51±0.23kPa，术后 6 周为 0.28±0.17kPa；差异有统计学意义（p<0.001）。31 例患者术后 PTP 降低，仅 1 例患者（由 0.74kPa 增加至 0.75kPa）术后 PTP增加。主观上，所有患者术后发声均省力。使用加速度计检测声带振动是可行的，且更易于识别声带振动停止的时间点，这对 PTP 测量很重要。
声带显微手术可降低声带息肉患者的 PTP，改善发声的轻松度。PTP 是评估声带息肉患者手术效果的客观测量指标之一。使用加速度计检测声带振动可改善 PTP 的测量。
