title: Not all breathing circuits are "circuits".
authors: K
authors: K
authors: Kondylis-DeBlois
authors: R
authors: R
authors: Ortega
mesh_terms: D000764:Anesthesia, Closed-Circuit; D000776:Anesthesiology / Q000193:education / Q000379:methods; D006801:Humans; D009626:Terminology as Topic