tailieunhanh - Báo cáo khoa học: "A scavenging double mask to reduce workplace contamination during mask induction of inhalation anesthesia in dogs"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú yđề tài: A scavenging double mask to reduce workplace contamination during mask induction of inhalation anesthesia in dogs. | Friembichler et al. Acta Veterinaria Scandinavica 2011 53 1 http content 53 1 1 AVS ACTAVETERINARIA teJnoZ 10 SCANDINAVICA RESEARCH Open Access A scavenging double mask to reduce workplace contamination during mask induction of inhalation anesthesia in dogs Susanne Friembichler Paul Coppens Heli Sare Yves Moens Abstract Background Workplace contamination by the use of volatile anesthetic agents should be kept to a minimum if a potential health hazard is to be minimised. Mask induction of animals is a common procedure. The present study investigates the efficiency of a novel scavenging double mask in reducing waste gas concentrations in the breathing zone of the anesthetist performing this procedure. Methods Twelve beagle dogs ASA I undergoing general anesthesia for a dental procedure were intravenously premedicated with medetomidine and butorphanol 10 pg kg and mg kg . Anesthesia was induced via a custom-made scavenging mask using isoflurane in oxygen. In six dogs group S scavenging from the mask was performed whereas in six other dogs group NS the scavenging function was disabled. Isoflurane concentration was continuously measured with photoacoustic spectroscopy at the level of the shoulder of the anesthetist before and during mask induction and additionally during intubation. Statistical analysis was performed with a Student t- test and a Mann-Whitney U test p for significance . Results The mean isoflurane concentration during baseline premedication was ppm and ppm in group S and NS respectively. This increased during mask induction to ppm and ppm respectively p . The maximum isoflurane concentration ranged from ppm to ppm and from from ppm to ppm in group S and NS respectively. Conclusion This double mask can be used to induce inhalation anesthesia in dogs. Scavenging from the mask significantly decreases the amount of waste anaesthetic gas concentrations in the breathing zone .