Chung R P, Patel P, Ter Keurs M, Van Lith Bijl J T, Mahieu H F
Academic Hospital Vrije Universiteit, Department of Otorhinolaryngology Head & Neck Surgery, Amsterdam, The Netherlands.
Rev Laryngol Otol Rhinol (Bord). 1998;119(5):301-6.
This study has been performed to evaluate and compare two frequently used indwelling tracheoesophageal voice prostheses, the low-resistance (LR) Groningen and the Provox voice prosthesis. The airflow resistance in vitro of the Provox prosthesis has been measured and compared to our reported results of the LR Groningen prosthesis. The in vivo study involved fifteen non-myotomized laryngectomees who randomly received one of the two prostheses. Measurements were performed of the intratracheal phonatory pressure and of voice parameters. The intelligibility of speech in noise was evaluated in eight patients. Patients preferences regarding the two prostheses were assessed. Aerodynamic measurements show the Provox voice prosthesis to have a lower airflow resistance. The median intratracheal phonatory pressure for phonation of 75 dB was significantly lower (2.1 kPa) in patients using the Provox voice prosthesis. Speech rate, maximal phonation time and maximal vocal intensity showed no significant difference. The intelligibility of speech in noise produced with the Provox was significantly better than the speech produced with the LR Groningen prosthesis. Subjectively, most patients preferred the Provox prosthesis because speech required less effort. Patients with a hypotonic pharyngoesophageal segment tended to prefer the LR Groningen prosthesis.
本研究旨在评估和比较两种常用的植入式气管食管语音假体，即低阻力（LR）格罗宁根假体和普洛沃克斯语音假体。已对普洛沃克斯假体的体外气流阻力进行了测量，并与我们报告的LR格罗宁根假体的结果进行了比较。体内研究涉及15名未行肌切开术的喉切除患者，他们随机接受两种假体中的一种。对气管内发声压力和语音参数进行了测量。对8名患者的噪声环境下语音清晰度进行了评估。评估了患者对两种假体的偏好。空气动力学测量显示普洛沃克斯语音假体的气流阻力较低。使用普洛沃克斯语音假体的患者在发出75分贝声音时的气管内发声压力中位数显著更低（2.1千帕）。语速、最大发声时间和最大发声强度无显著差异。普洛沃克斯假体在噪声环境下产生的语音清晰度明显优于LR格罗宁根假体。主观上，大多数患者更喜欢普洛沃克斯假体，因为发声所需的力气较小。下咽食管段张力低下的患者倾向于更喜欢LR格罗宁根假体。
