Abstract:
Monitoring of inspired and expired endtidal carbon dioxide is as important as monitoring of oxygen saturation. The capnometry and pulse oximetry enables early detection and helps in avoiding ventilation mishaps.[1] Monitoring of anesthetic gas has gained importance as it helps in assessing depth of anesthesia. Hence, it is important that gas sampling line should be functioning i.e., no kinks, no leaks and dry enough. Many techniques are described to prevent kinks such as angled attachment of sampling line,[2] use of three way,[3] etc. It becomes very difficult to adjust the kink or to notice it especially when the sampling line is under the drape in case of head and neck surgeries. It is blamed that kinking and obstruction is seen mainly due to vertical position of gas sampling line
