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  • Title: Prevention of CO2 laser-induced endotracheal tube fires with the laser-guard protective coating.
    Author: Sosis MB, Dillon F.
    Journal: J Clin Anesth; 1992; 4(1):25-7. PubMed ID: 1540365.
    Abstract:
    STUDY OBJECTIVE: To determine how well Laser-Guard protects polyvinyl chloride (PVC) endotracheal tubes from the carbon dioxide (CO2) laser. DESIGN: Bare and Laser-Guard-protected PVC endotracheal tubes were tested with 5 L/min of oxygen (O2) passing through them. SETTING: Research laboratory of a university-affiliated metropolitan medical center. INTERVENTIONS: After moistening the Laser-Guard-protected endotracheal tubes, we subjected the tubes to CO2 laser radiation at 10 and 70 watts until combustion occurred or 60 seconds had elapsed. MEASUREMENTS AND MAIN RESULTS: The bare PVC tube ignited and a "blowtorch" fire occurred after 3 seconds of CO2 laser use at 70 watts. The moistened Laser-Guard-protected PVC endotracheal tubes were not significantly damaged by 1 minute of laser use at 70 watts. CONCLUSIONS: Laser-Guard protects the shafts of combustible PVC endotracheal tubes from direct, high-power, continuous CO2 laser radiation.
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