J.Jpn. Surg. Soc.. 83(5): 425-433, 1982
Original article
CLINICAL AND EXPERIMENTAL STUDIES ON RECURRENT LARYNGEAL NERVE PARALYSIS
Part 1. Clinical Studies (No.3)
Comparison of Phonation Ability Between End-to-end Anastomosis of Severed Unilateral Recurrent Laryngeal Nerve and Severed Unilateral Recurrent Laryngeal Nerve
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Second Department of Surgery, Hiroshima University School of Medicine, Hiroshima, Japan (Director : Prof. H. Ezaki) Hiroki Ushio |
However, the authors discovered that although vocal cord movement could not be restored, phonation was better in whom the recurrent laryngeal nerve was anastomosed than in whom it had been left in severed state.
A comparative study of phonation ability using a phonation function test device was performed on thirty normal male and female adults, eighteen male and female adults in whom a unilateral recurrent laryngeal nerve had been left severed and six female adults in whom a unilateal severed nerve had been anastomosed.
The test items consisted of maximum phonation time, air flow rate during phonation, range of voice and vocal intensity and duration in terms of fortesimo (ff).
The results showed that the anastomosed cases had higher values than the severed cases for all test items, and as a matter of fact, the results were even close to normal persons.
In conclusion, it is considered an end-to end anastomosis of the recurrent laryngeal nerve is meaningful.
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