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CO2 laser stapedotomy.

S G Lesinski¹, J A Stein

¹Department of Otolaryngology, Bethesda Hospital, Cincinnati, Ohio.

The Laryngoscope

|June 1, 1989

Summary

The CO2 laser is a safe and effective tool for stapedotomy, with 87% of patients maintaining excellent hearing results. This microsurgical technique minimizes inner ear trauma during the procedure.

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Area of Science:

Otolaryngology
Microsurgery
Laser Technology

Background:

Stapedotomy is a surgical procedure to restore hearing.
Previous methods for stapedotomy involved various lasers, with varying tissue effects.
The CO2 laser's efficacy and safety for stapedotomy required further investigation.

Purpose of the Study:

To evaluate the CO2 laser's effectiveness and safety in performing stapedotomy.
To compare the CO2 laser with other laser types for stapedotomy.
To establish safe energy parameters for CO2 laser stapedotomy.

Main Methods:

Laboratory experiments comparing Argon, KTP-532, and CO2 lasers for stapedotomy.
Establishing safe energy parameters for Sharplan CO2 laser models.
Performing 153 consecutive CO2 laser stapedotomies under local anesthesia.

Main Results:

CO2 laser demonstrated superior tissue characteristics for stapedotomy.
87% of patients maintained an air/bone gap within 10 dB post-surgery (mean follow-up 32 months).
Four cases of perilymph fistula occurred, all successfully repaired; no significant sensorineural hearing loss was noted.

Conclusions:

The CO2 laser is a safe and efficient microsurgical tool for stapedotomy.
Appropriate energy parameters minimize inner ear trauma.
The procedure offers simple and effective hearing restoration for otosclerosis patients.

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