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Thermal effects of cold light sources used in otologic surgery

  • Otology
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Abstract

The objective of this study was to investigate the thermal effects of cold light sources and endoscopes on the inner ear. 25 male guinea pigs were assigned equally to five groups (1: Halogen—1 min, 2: Halogen—5 min, 3: Xenon—1 min, 4: Xenon—5 min, 5: Controls). After both bullae of the guinea pigs were opened, light sources and endoscopes were positioned in the middle ears of the first four groups for specific time periods. DPOAE and ABR tests were conducted on all animals at the beginning of the study, at the end of surgery, and 2 h after surgery. The temperatures of cold light sources were measured by a thermocouple thermometer, and the surface temperatures of the endoscopes were measured by an infrared thermometer. DPOAE and ABR measurements performed right after and 2 h after surgery in group 1, 2, 3, and 5 did not reveal any significant difference. In group 4, DPOAE values were significantly lower and ABR threshold values were significantly higher than those in the other groups, right after and 2 h after surgery. Thermocouple thermometer readings showed that, after the first minute, the Xenon light source generated significantly more temperature rise than the Halogen light source. The surface temperatures of all endoscopes returned to normal approximately 1 min after light sources were turned off. Our study demonstrated that when an endoscope using a Xenon light source was applied to the middle ear for a specific time periods, inner ear functions deteriorated, as reflected by audiologic tests.

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Conflict of interest

The authors state that this is an original work that has not been published or submitted to another journal. We did not receive any financial support, and there is no conflict of interest

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Authors and Affiliations

  1. Department of Otorhinolaryngology, Bezmialem Vakif University, Fatih, Istanbul, Turkey

    Fadlullah Aksoy, Orhan Ozturan, Sabri Baki Eren & Bayram Veyseller

  2. Department of Otorhinolaryngology, Bayrampaşa State Hospital, Bayrampasa, Istanbul, Turkey

    Remzi Dogan

  3. Department of Audiology, Faculty of Health Sciences, Bezmialem Vakif University, Fatih, Istanbul, Turkey

    Ozge Gedik

Authors
  1. Fadlullah Aksoy
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  2. Remzi Dogan
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  3. Orhan Ozturan
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  4. Sabri Baki Eren
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  5. Bayram Veyseller
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  6. Ozge Gedik
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Corresponding author

Correspondence to Remzi Dogan.

Additional information

This study was awarded in the the first Meeting of GLORF—Global Otology Research Meeting in November 13, 2013 in Antalya, Turkey as part of 29th Politzer Society Meeting by the international jury in the section of middle ear surgery.

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Aksoy, F., Dogan, R., Ozturan, O. et al. Thermal effects of cold light sources used in otologic surgery. Eur Arch Otorhinolaryngol 272, 2679–2687 (2015). https://doi.org/10.1007/s00405-014-3202-4

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  • DOI: https://doi.org/10.1007/s00405-014-3202-4

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