Related Experiment Videos
Fresh gas flows with the circle system
1Department of Clinical Studies-Philadelphia, University of Pennsylvania School of Veterinary Medicine.
Abstract:
If, when using a circle system, the flow of all inhaled gases exactly equals the uptake of all these gases by the patient, the circle system is called a closed circle system. If the fresh gas flows are higher than the uptake of the gases by the body, the circle system is a semiclosed circle system. The mechanical status of the pop-off valve; i.e., open or closed, has nothing to do with the definition of whether the circle is closed or semiclosed.