Arumugam Vasudevan Satyen Parida Lenin Babu Elakkumanan Sandeep Mishra
10.4103/0970-9185.105816
J Anaesthesiol Clin Pharmacol
2013 Jan;29(1):108-10.
anesthesia machine circle breathing system incompetent unidirectional valves
CC BY-NC-SA
https://pubmed.ncbi.nlm.nih.gov/23493853/
Case Reports
PMC3590513
23493853
Carbon dioxide rebreathing caused by deformed silicon leaflet in the expiratory unidirectional valve
2013