Microbiological safety and cost-effectiveness of weekly breathing circuit changes in combination with heat moisture exchange filters: a prospective longitudinal clinical survey

Nils-Olaf Hübner, Georg Daeschlein, Christian Lehmann, Sergei Musatkin, Ute Kohlheim, Andreas Gibb, Ojan Assadian & Hiroyoshi Kobayashi
Aim: To assess the safety and cost effectiveness of a usage for seven days of breathing circuit systems (BCSs) in combination with heat moisture exchanger filters (HMEF) in operation room anesthesia. Method: In a prospective longitudinal clinical study, the contamination on high-risk surfaces (HMEF together with inner and outer surface of BCS) was monitored over 1, 2, 5, and 7 days. Results of endogenous respiratory patient flora and contamination flora of BCS, HMEF and bag...