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  • Title: Metal anesthesia circuit components stop the progression of laser fires.
    Author: Sosis MB, Braverman B.
    Journal: J Clin Anesth; 1994; 6(1):52-4. PubMed ID: 8142101.
    Abstract:
    STUDY OBJECTIVE: To determine whether metallic Y-pieces and elbows would halt the progression of a laser-induced endotracheal tube fire. DESIGN: A segment of polyvinyl chloride endotracheal tube was attached to either an all-plastic anesthesia circle breathing system (n = 5) or a circuit consisting of a metal Y-piece and elbow with plastic hoses (n = 5). In each case, an Nd-YAG laser was used to ignite the endotracheal tube segment and attached anesthesia circuit as 5 L/min of oxygen was flowing through them. SETTING: Research laboratory of a university-affiliated metropolitan medical center. MEASUREMENTS AND MAIN RESULTS: The flames from the endotracheal tubes burned through the 22 mm hoses that were part of the all-plastic circuits in 49.5 +/- 8.8 seconds (mean +/- SD). In none of the trials with the metal components did the fire advance beyond the endotracheal tube's 15 mm adapter. CONCLUSIONS: Metal circuit components halt the progression of laser-induced endotracheal tube fires toward the anesthesia machine.
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