Safety of Desiccated Baralyme(TM) in the Narkomed-M Anesthesia Machine: The Effect of Isoflurane and Sevoflurane at Low and High Flow O2 on Absorbent Temperature

摘要

Objective: To determine the clinical safety of using partially desiccated Baralyme(TM) in a Narkomed-M anesthesia machine by measuring the maximum temperature within the absorbent and time to maximum temperature under standard OR conditions. Methods: Four experimental conditions were set using sevoflurane (experiment) vs. isoflurane (control) at low (3L) vs. high (5L) O2 flows. Baralyme was partially desiccated by 12 hours high-flow air to 10.8% moisture. Results: Twenty three trials showed no significant interaction of Agent and Liter-flow for temperature (p=.896) or time (p=.668), nor was there a significant main effect for Agent for temperature (p=.230) or time (p=.863). Three Liter-flow showed a consistently higher temperature than the 5L flow overall (44.5 degrees C vs. 41.5 degrees C).