Abstract
A laboratory study of a new circle system is presented. The inspiratory limb encloses a coaxial tube, delivering fresh gas close to the patient, immediately upstream of the inspiratory one-way valve. The system is more efficient than the non-coaxial system and allows the expiratory valve to be situated conveniently at the canister end of the expiratory limb. A disadvantage of low flow anaesthesia is the sluggish response of the system to changes in vapour or oxygen concentrations in the fresh gas flow. This is markedly improved by the new system. The advantages of the system are largely independent of respiratory pattern.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
