CO2 Láser stapedostomy in Otosclerosis

Abstract

Introduction: Stapedostomy with prosthesis placement between the incus and the pla­ten is the surgery of choice for otosclerosis. It can be done with a milling cutter, punch or laser. Objective: To describe the experience of CO₂ Laser stapedostomy at the Ba­rros Luco Hospital. Santiago de Chile between the years 2017 to 2023. Material and Method: Retrospective descriptive study. Patients with a diagnosis of otosclerosis, con­ductive or mixed hearing loss with gap > 30 dB, undergoing stapedostomy using 40C CO₂ Laser (Lumenis Co). And with follow-up of at least 3 months. Pre- and postope­rative audiometries were compared, using the pure tone average (PTP) with the fre­quencies 0.5, 1 and 2 kHz, and separately the dB at 4 kHz. Ethics Committee appro­ved. Results: 37 Ears. 78% women, average age 50 years. 97% of patients had bilateral otosclerosis. 57% right ears operated. Significant decrease in air PTP and closure of the postoperative GAP at 3 months (p < 0.001). Significant dB decreases at 4 kHz, and gap closure (p < 0.001). No significant changes in bone PTP or discrimination. Conclu­sions: The short and médium-term hearing results, and complications are comparable with different series reported in the literature. Stapedostomy with CO₂ Laser in otoscle­rosis is a safe, efficient technique.