The Effects of the Argon Laser on Temperature Within the Cochlea

Vollrath, M.; Schreiner, Christoph E.

doi:10.3109/00016488209130891

Cited by 27 publications

(15 citation statements)

References 5 publications

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“…Laboratory studies have demonstrated perforation of the underlying saccule and significant temperature elevation of the perilymph within the vestibule with the argon and KTP laser in experimental stapedectomy 6‐8 . This has been explained by the fact that relatively little energy is absorbed by the white otosclerotic footplate, and the energy that does enter the underlying vestibule could be transmitted unimpeded by the clear perilymph until the pigmented neuroepithelia of the saccule is encountered.…”

Section: Introductioncontrasting

confidence: 78%

“…Vollrath and Schreiner 7 reported the effects of argon laser use on temperature change in the guinea pig cochlea. They also used a micromanipulator system and found a moderate (8°C to 10°C rise in temperature of the perilymph with direct firing (2 watts at pulse duration of 0.2 to 0.5 seconds) on the stapes footplate.…”

Section: Discussionmentioning

confidence: 98%

“…In vitro models are unable to simulate this natural buffer system. This may have been a factor for the poor previous laboratory results with the KTP laser 7 . Another factor to be considered is that prior laboratory studies used cadaveric stapes.…”

Section: Discussionmentioning

confidence: 99%

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Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

Kodali

Harvey²,

Prieto

1997

The Laryngoscope

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Although use of the laser for stapedectomy has become common in recent years, controversy remains regarding whether the CO2 or visible-spectrum lasers (argon and KTP) are best suited for this operation. The main concern has been the potential for thermal injury to the inner ear with the visible-spectrum lasers attributable to their absorption characteristics. To further investigate this issue, the author performed 20 laser stapedectomies on adult chinchillas. Following placement of a 0.127-mm-diameter copper/constantan thermocouple (sampling at 12 Hz) beneath the footplate on the medial wall of the vestibule via a distant fenestration site, thermal changes with a micromanipulator-based CO2 and fiberoptic KTP system were compared. This was the first live animal model comparison of these two lasers. There was no statistical difference in the mean temperature elevation between the two systems (P = 0.395).

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Section: Introductioncontrasting

confidence: 78%

Section: Discussionmentioning

confidence: 98%

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Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

Kodali

Harvey²,

Prieto

1997

The Laryngoscope

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“…Vollrath and Schreiner,54, 55 using the argon laser and a guinea pig model, demonstrated maximal temperature elevation of 8°C to 10°C of perilymph during the creation of a stapedotomy. They found a disproportionate temperature increase with longer exposure times.…”

Section: Introductionmentioning

confidence: 98%

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

Lundy

2009

The Laryngoscope

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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.

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“…Such concern prompted many studies being performed by different workers to identify the thermal effect of the laser on the inner ear. However, almost all of these studies were either on animal models or using cadaveric stapes 7–10 . Although these studies showed an increase in temperature at the under surface of the footplate of up to 10 °C during laser perforation of the footplate, it was felt that this increase was insufficient to cause permanent cochlear damage.…”

mentioning

confidence: 99%

A study of the intra-operative effect of the Argon and KTP laser in stapes surgery

Yung

2002

Clin Otolaryngol

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The intraoperative effect of the Argon and KTP laser was studied on 20 patients who had primary stapes surgery under local anaesthetic; 10 had Argon and 10 had KTP laser stapedotomy. Symptoms of inner ear disturbance such as dizziness and tinnitus were systematically recorded during the laser procedure. Both dizziness and tinnitus were relatively uncommon when the laser was used on the promontory. When the laser was used to transect the posterior crus, all the patients reported transient dizziness, probably from the thermal effect through the posterior crus into the inner ear. However, tinnitus was unusual during this stage. When the laser was used to fenestrate the footplate, only 30% of patients reported a transient dizziness as less laser energy was used. On the other hand, 55% of the patients experienced tinnitus during this stage, which indicates an acoustic effect on the inner ear. There is no difference between the Argon and KTP laser.

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The Effects of the Argon Laser on Temperature Within the Cochlea

Cited by 27 publications

References 5 publications

Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

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

A study of the intra-operative effect of the Argon and KTP laser in stapes surgery

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The Effects of the Argon Laser on Temperature Within the Cochlea

Cited by 27 publications

References 5 publications

Thermal Effects of Laser Stapedectomy in an Animal Model: CO2 Versus KTP

Thermal Effects of Laser Stapedectomy in an Animal Model: CO2 Versus KTP

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

A study of the intra-operative effect of the Argon and KTP laser in stapes surgery

Contact Info

Product

Resources

About

Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

Thermal Effects of Laser Stapedectomy in an Animal Model: CO₂ Versus KTP

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