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The influence of Er. YAG laser application in fenestration to the inner ear
Ryota Oku1, Fujinobu Tanaka, Naoki Tsukasaki
1Department of Otolaryngology, University of Nagasaki School of Medicine, Nagasaki, Japan. oku@uresino.go.jp
Objective:
Erbium (Er.) YAG laser may be usable for middle ear surgery because of its ability to ablate bony tissue. We investigated the inner ear damage caused by the fenestration to the inner ear with Er. YAG laser.
Design:
We investigated the influence of Er. YAG laser on the inner ear using electrophysiological technique.
Results:
Several cases had a decrease in endocochlear potential (EP) and cochlear microphonics (CM) after the fenestration to the inner ear.
Conclusions:
Er. YAG laser is safe if it is used for the small and superficial fenestration to the stapes footplate. However, a few extra pulses after fenestration are dangerous.
