1981 Volume 51 Issue 6 Pages 271-275
An anesthetic gas scavenging system was evaluated in clinical situation. Pollutino Control System^R by Yamato Sanki Co. Ltd., was installed in two operating rooms in our Central Operating Department.Nitrous oxide and halothane concentrations at six points in a operating room and at one point in the corridor just outside of the operating room were measured with Miran 103 infrared analyser.Pollution by both anesthetic gases without PCS was considerebly high and at point Al (50cm away from a pop-off valve of the anesthesia machine towards an anesthesiologist) recorded highest pollution, that is, mean nitrous oxide concentration of 190ppm and mean halothane concentration of 4.4ppm.When PCS was turned on, except in cases of considerable presence of leakage from anesthesia machine or ventilator circuit, pollution cleared to below the levels of NIOSH published acceptable levels, that is 25ppm for nitrous oxide and 0.5ppm for halothane.We recommend prompt installation of some kind of waste anesthetic gases clearing system.
