Conduit that allows breathing gases to pass to and from the user
A breathing circuit is those parts of a breathing apparatus (or breathing system), which direct the flow of supplied breathing gas to, and sometimes from, the user. The breathing circuit may be open, closed, or semi-closed, depending on whether breathing gas is recycled. A closed or semi-closed circuit will include components which remove carbon dioxide from the exhaled gas and add oxygen before it is delivered for inhalation, so that the mixture remains stable and suitable for supporting life. Terminology may vary slightly between fields of application. In diving and industrial rebreathers, the closed or semi-closed breathing circuit may also be called the loop, or breathing loop. In medical equipment the closed or semi-closed circuit may be called the circle system.
A medical breathing system or medical breathing circuit is a medical device used to deliver oxygen, remove carbon dioxide, and deliver inhalational anaesthetic agents to a patient. Originally developed for use in anaesthesiology, many variants of breathing system are in clinical use, but most comprise a source of fresh gas flow, a length of breathing tubing to direct the gas, an adjustable pressure limiting valve to control pressure within the system and direct waste away, and a reservoir bag to allow assisted ventilation.[1]
^Baha Al-Shaikh; Simon Stacey (2013). "Breathing systems". Essentials of Anaesthetic Equipment. Elsevier Health Sciences. pp. 55–73. ISBN 978-0-7020-4954-5.
A breathingcircuit is those parts of a breathing apparatus (or breathing system), which direct the flow of supplied breathing gas to, and sometimes from...
terrestrial/normobaric, or high altitude/hypobaric, by breathingcircuit type: open, semi-closed, or closed circuit, by gas supply type: constant flow, supply on...
from open-circuitbreathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance...
apparatus. by breathing gas source: self-contained gas supply, or remotely supplied gas, by breathingcircuit type: open, semi-closed, or closed circuit, by gas...
scuba are in general use: open-circuit-demand, and rebreather. In open-circuit demand scuba, the diver expels exhaled breathing gas to the environment, and...
from open-circuitbreathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance...
in granular form within recirculating breathing environments like general anesthesia and its breathingcircuit, submarines, rebreathers, and hyperbaric...
maintain breathing when autonomic breathing fails Ventilator Breathingcircuit, a medical device, to breathe and introduce anesthesia Breathing apparatus...
divers in applications where it has advantages over open circuit scuba, and surface supply of breathing gas is impracticable. The main advantages of rebreather...
dives. Also, breathing gas diluted with helium may be used to reduce the effects of nitrogen narcosis during deeper dives. Open-circuit scuba systems...
pressure. Underwater breathing apparatus can be classified as open circuit, semi-closed circuit, (including gas extenders) or closed circuit (including reclaim...
specific outlet on the anaesthetic machine to which the breathing attachment is connected. Open circuit forms of equipment, such as the Magill attachment,...
Open circuit may refer to: Open circuitbreathing apparatus, any type of breathing apparatus where the exhaled gas is discharged to the surroundings without...
of their time underwater, that serves as a breathing tube Anesthesia breathingcircuit, a system of breathing hoses which may be connected to a mask, laryngeal...
should also be checked in between cases, ensuring that the breathing apparatus and breathingcircuit are fully patent, for the safe anesthesia of patients...
secured to the face or neck and connected to a T-piece, anesthesia breathingcircuit, bag valve mask device, or a mechanical ventilator. Once there is...
hypoventilating, known as "skip breathing". Skip breathing is a controversial technique to conserve breathing gas when using open-circuit scuba, which consists...
A breathing apparatus or breathing set is equipment which allows a person to breathe in a hostile environment where breathing would otherwise be impossible...
patient and the anesthesia administration device (which is usually a breathingcircuit and a ventilator). The critical connection between the two components...
A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas, but...
tidal volume can be affected (usually overestimated) by leaks in the breathingcircuit or the introduction of additional gas, for example during the introduction...
from tanks. The small open-circuit scuba Helicopter Aircrew Breathing Device has the similar purpose of providing breathing gas to escape from a ditched...
circuit rebreather, but has more in common with the passive addition systems, in that the amount of feed gas supplied is a function of the breathing rate...
collects and removes waste gases from the patient breathingcircuit and the patient ventilation circuit. In most jurisdictions, there is a legal requirement...
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