In vitro and in vivo comparison of the low-resistance Groningen and the Provox~TM tracheoesophageal Voice prostheses

摘要

This study has been performed to evaluate and compare two frequently used indwelling tracheoesophageal voice prostheses, the low-resistance(LR)Groningen and the Provox~TM voice prosthesis. The airflow resistance in vitro of the Provox~TM 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. Measurement Were performed of the intratracheal phonatory pressure and of Voice parameters. The inteligibility of speech in noise was Evaluated in eight patients. Patients preference regarding the Two prostheses were assessed.