The Effect of CO₂and KTP laser on the cat saccule and utricle

Abstract

There is no evidence of a difference between the CO(2) and KTP laser in potential laser-related trauma. Using bone-conducting auditory brain-stem response threshold and clinical monitoring of vestibular function, there was no evidence of clinical auditory or vestibular dysfunction. The histologic evidence of saccular and utricular wall rupture is more consistent with stapes extraction trauma than laser-related trauma.

Outcomes of Different Laser Types in Laser-assisted Stapedotomy

“…Both would result in sensorineural hearing loss in the operated ear. Direct damage to the neuroendothelium as a result of the use of either KTP or argon laser would rather express itself in vertigo (21). These postoperative side effects should be taken into account when choosing which laser to use, as they can be highly disabling for the patient.…”

A 1,470 nm diode laser in stapedotomy: Mechanical, thermal, and acoustic effects

“…Clinically, the occurrence of mechanical effects as fast pressure differences in the inner ear could be potentially damage hair cell functioning. Animal studies supports this finding [4,6,22,23]. The diode 1,470 nm laser has not tested in animals yet.…”

“…The variety in medical laser systems and their specific wavelengths have different laser‐tissue interaction and therefore unique effects. For example, Argon (488 nm), diode laser (980 nm), and KTP laser (potassium titanyl phosphate, 532 nm) with low water absorption coefficients have been used in pigmented tissues, or haemoglobin‐rich tissues . When using these lasers to perform fenestration of the stapes footplate ultimately some of the laser light will pass through the osseous layers of the footplate and escape into the space below.…”

Avaliação dos potenciais evocados cocleares após lesão do utrículo por eletrocauterização

“…The association between utricular surgery and hearing preservation is found only in two studies in the literature 16 , 17 . By describing interventions in utricular maculae through the oval window using argon laser irradiation in guinea pigs 16 and CO 2 and KTP laser irradiation in cats 17 , the authors show that, in spite of the histological evidence of trauma and total degeneration of the sensory epithelium, in all animals hearing was preserved, which, in accordance with the results of the present study, confirms the hypothesis that: the utriculostomy proposed by Lavinsky would have less auditory repercussion.…”