Non Rebreathing Circuit Anaesthesia

In this circuit oxygen flows through a flow meter and into the vaporizer.

Non rebreathing circuit anaesthesia.

Veterinary anesthesia circuits explained. Non rebreathing circuit nrb bain vs rebreathing circle systems. Click on the thumbnail or on the underlined text to see the larger version 136 kb. Photograph of the mapleson d.

Non rebreathing mapleson breathing circuits. All non rebreathing nrb circuits lack unidirectional valves and soda lime carbon dioxide absorption. Greater than 40 ml kg min of oxygen flow rate. 20 40 ml kg min of oxygen flow rate suitable for most clinical circumstances.

Non rebreathing circuits are designed to deliver oxygen and anesthetic gases with less resistance to breathing in small patients under 10 lbs 7 kg. The distinguishing feature of non rebreathing circuits is that elimination of co 2 is accomplished by removing all expired gases from the system and venting them to the atmosphere. At this point gases exiting the vaporizer go directly to a hose for delivery to the patient with no inhalation flutter valve. 10 20 ml kg min of oxygen flow rate.

These circuits do not use a soda lime canister but instead use specially designed circuits and a higher fresh gas flow to remove carbon dioxide. This brief summary of the two most popular anesthesia circuits currently in use is intended as an easy reference to simplify and explain the strengths and advantages of both systems. This is normally achieved by using the fresh gas flow from the anaesthetic machine to direct the expired gases out of the circuit via a valve or other arrangement.