Anesthetic gas concentration changes related to the temperature and humidity in high and low flow anesthesia.
The objective of this study, is to investigate the effects of the temperature and the humidity to the amount of anesthetic gas output from the vaporizer in both high and low flow anesthesia, and to attract attention to this relationship during the delivery of anesthesia and the calibration measurements. The performance of the anesthesia vaporizer (isoflurane and sevoflurane) was evaluated in both high and low flow anesthesia, and it was investigated whether the vaporizer supplied the preset amount of anesthetic to the patient. Then, through changing the temperature of the anesthetic device between 20 and 36 degrees C, and through changing the humidity between 20% and 42%, the changes in the gas concentration were measured. After measurements, the results were studied statically. For high and low flow anesthesia, the regression equations were obtained and it was seen that these equations were acceptable.
Sezdi
Mana
M
Biomedical Engineering Institute, Bogazici University, Istanbul, TURKEY. mana@istanbul.edu.tr
Akan
Aydin
A
Tank
Fatih
F
D018685:Anesthetics, Inhalation / Q000008:administration & dosage / Q000032:analysis* / Q000737:chemistry; D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006813:Humidity; D008956:Models, Chemical; D015233:Models, Statistical; D009330:Nebulizers and Vaporizers; D012212:Rheology / Q000295:instrumentation* / Q000379:methods; D013696:Temperature
D018685:Anesthetics, Inhalation