The Laryngoscope · 2005
Prospective clinical study on cochlear function after erbium:yttrium-aluminum-garnet laser stapedotomy.
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Keck Tilman, Bürner Harald, Rettinger Gerhard
Аннотация
OBJECTIVE: To assess whether the application of the emitting erbium:yttrium-aluminum-garnet (Er:YAG) laser in stapedotomy has negative effects on vestibular and cochlear functions.
DESIGN: Prospective, with 12 to 14 months follow-up.
SETTING: Academic tertiary referral center.
PATIENTS: Twenty-four patients undergoing stapedotomy (primary surgery) in otosclerosis.
INTERVENTION: All patients underwent Er:YAG laser-assisted stapedotomy for otosclerosis between January 2000 and June 2002.
MAIN OUTCOME MEASURES: Early (1-3 days after surgery) and late (12-14 months after surgery) postoperative bone-conduction thresholds and the presence of post-operative tinnitus and vertigo were analyzed. In addition, the relation between applied laser energy and postoperative bone-conduction thresholds was calculated.
RESULTS: In 22 patients, unchanged preoperative minus early postoperative pure-tone bone-conduction averages at 1, 2, and 4 kHz were observed. In one patient, a slight early deterioration between 10 and 20 dB was seen. In 18 patients, unchanged preoperative minus late postoperative pure-tone bone-conduction averages at 1, 2, and 4 kHz were observed. In two patients, a slight late deterioration between 10 and 20 dB was seen. In two patients, a new postoperative tinnitus was observed. No patient suffered from vertigo at the time of second evaluation. No correlation between applied laser energy and both postoperative bone-conduction thresholds was found.
CONCLUSIONS: The Er:YAG laser stapedotomy in otosclerosis is a safe technique. Vestibular and cochlear function is not significantly disturbed after Er:YAG laser stapedotomy.
DESIGN: Prospective, with 12 to 14 months follow-up.
SETTING: Academic tertiary referral center.
PATIENTS: Twenty-four patients undergoing stapedotomy (primary surgery) in otosclerosis.
INTERVENTION: All patients underwent Er:YAG laser-assisted stapedotomy for otosclerosis between January 2000 and June 2002.
MAIN OUTCOME MEASURES: Early (1-3 days after surgery) and late (12-14 months after surgery) postoperative bone-conduction thresholds and the presence of post-operative tinnitus and vertigo were analyzed. In addition, the relation between applied laser energy and postoperative bone-conduction thresholds was calculated.
RESULTS: In 22 patients, unchanged preoperative minus early postoperative pure-tone bone-conduction averages at 1, 2, and 4 kHz were observed. In one patient, a slight early deterioration between 10 and 20 dB was seen. In 18 patients, unchanged preoperative minus late postoperative pure-tone bone-conduction averages at 1, 2, and 4 kHz were observed. In two patients, a slight late deterioration between 10 and 20 dB was seen. In two patients, a new postoperative tinnitus was observed. No patient suffered from vertigo at the time of second evaluation. No correlation between applied laser energy and both postoperative bone-conduction thresholds was found.
CONCLUSIONS: The Er:YAG laser stapedotomy in otosclerosis is a safe technique. Vestibular and cochlear function is not significantly disturbed after Er:YAG laser stapedotomy.