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- W2034389470 endingPage "975" @default.
- W2034389470 startingPage "956" @default.
- W2034389470 abstract "To analyse the design, performance, failures, the checking before use of mechanical fresh gas delivery units (FGDUs) equipped with bobbin or ball-flowmeters delivering a continuous gas flow and calibrated vaporizers, marketed in France in 1999.Articles were obtained from a Medline review (1960-1999; search terms: anaesthetic machine, flowmeter, vaporizer), textbooks and personal files; specific data were provided by manufacturers.The articles were considered for performance data, benefits and drawbacks, and characteristics, as well as the risks carried by mechanical FGDUs.Seven anaesthetic machines out of 11 are equipped with mechanical FGDUs, including rotameters delivering a gas mixture up to 30 L.min-1, calibrated vaporizers and an O2-flush valve delivering at least 500 mL O2 per second (30 L.min-1). These units allow closed circuit anaesthesia. They carry a risk for barotrauma as three out of them can deliver at the gas outlet of the FGDUs a gas mixture at a pressure reaching 3.5 bars and four others at a pressure of 150-200 mmHg. They also carry a risk for hypoxia, either from a preferential leak of oxygen at the corresponding rotameter or the O2-flush valve, or from a leak of fresh gas mixture either in a vaporizer or the selectatec manifold. The vaporizers carry a risk for vapor delivery at a concentration differing notably from the value set on the concentration dial. Therefore their accuracy must be checked periodically and the FGDUs checked for a leak after the addition to or the removal of a vaporizer from the selectatec manifold. The optimal technique for leak detection is the negative pressure test." @default.
- W2034389470 created "2016-06-24" @default.
- W2034389470 creator A5022219028 @default.
- W2034389470 creator A5025093835 @default.
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- W2034389470 creator A5088110193 @default.
- W2034389470 date "1999-11-01" @default.
- W2034389470 modified "2023-10-12" @default.
- W2034389470 title "Appareil d'anesthésie: systèmes d'alimentation en gaz frais. I. Systèmes mécaniques avec rotamètres et vaporisateurs calibrés" @default.
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