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KMID : 0602819990050020130
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Korean Journal of Bronchoesophagology
1999 Volume.5 No. 2 p.130 ~ p.137
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Long-Term Experiences of the Provox Voice Prosthesis at Snuh
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정영호/Young Ho Jung
박준범/원태빈/이승신/모지훈/박석원/성명훈/김광현/Jun Beom Park/Tae Bin Won/Seoung Shin Lee/Ji Hun Mo/Seok Won Park/Myung Whun Sung/Kwang Hyun Kim
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Abstract
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Background and Objectives : Provox, a recently developed tracheoesophageal
prosthesis, had been widely used for voice rehabilitation after total laryngectomy for its
low resistance and easiness of speech ability. But, long-term use of Provox resulted in
many complications and resulted in cessation of Provox as a primary method of vocal
rehabilitation. The aim of this study is to report Provox-related problems and the
long-term results of Provox voice prosthesis.
Materials and Methods : Medical records from patients who had undergone total
laryngectomy with Provox insertion at seoul National University Hospital between
January 1993 and December 1998 were reviewed retrospectively.
Results : 36 patients had used 79 Provox voice prostheses during the observed period.
The most common complication causing prosthesis change or removal was leakage
and/or aspiration, followed by granulation formation, crusting and/or obstruction, and
non-function. Median in situ lifetime of Provox was 274 days and 1-year-in situ rate
was 31.0% Among 36 patients, 17 patients had undergone tracheoesophageal shunt
closure at the last follow-up visit. 10 patients had complications but got along without
further treatments, and 1 patient changed to Blom-Singer voice prosthesis. Only 8
patients experienced no complication, and 5 out of whom had several times of Provox
change.
Conclusion : long-term use of Provox resulted in discontinuation of its use due to
complications in many cases. A better voice prosthesis with lower complication rate and
longer in situ lifetime is needed.
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