Solutions to kinking of the side stream carbon dioxide sampling line.

A sidestream gas analyzer samples gases from a sampling port in an adapter placed in a breathing circuit. Kinking of the sampling line of the sidestream capnogram is not an uncommon problem during head and neck surgeries. We have identified the main problem for kinking of the sampling line in head and neck surgeries to be its vertical origin from the connecting point of the breathing circuit. Angled attachment of the sampling line at its connection to the breathing circuit can minimize this problem of kinking significantly as has been shown by our study.