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At least 307 records · Page 17Linked to original sources
PubMed1979

[Monitoring of anaesthesia breathing systems by capnography (author's transl)].

Continuous measurement of the CO2 concentration in inhaled gas is the best method to know accurately the importance of rebreathing. Four anesthetic breathing systems were studied in 60 adult patients (Dighby-Leigh valve, circle system with and without soda lime. Waters system without soda lime, Bain circuit). Fresh gas flows (FGF) inspired and end-expired concentrations of CO2 (FI CO2, FE' CO2) and PaCO2 are measured. The FI CO2 seems to be negligible with Dighby-Leign valve and circle system with soda lime but important with other systems, even with FGF as high as 200 ml/kg, the FI CO2 is about 1 p. cent for Bain circuit, 2 p. cent in spontaneous ventilation, 2,7 p. cent in controlled ventilation for Waters valve. It is possible to theoretically determine that the FI CO2 would not exceed 1 p. cent.

Adult↗
PubMed1980

The value of capnography during jet ventilation for suspension laryngoscopy.

A self made connection device with an injector of 1.5 mm in diameter and connections for the measurements of the end tidal CO2 (Datascope 500 CO2 Analyzer), expired tidal and minute volumen (Dr¿ger Spirolog), and armoured tracheal tube nr. 22 with cuff (Rüsch), has been used in 25 unselected patients submitted to diagnostic laryngoscopy. The patients have been ventilated with Wolf Injectomat 2025 with incorporated Bird's Nitrous Oxyde/Oxygen blender and general anesthesia with i.v. hypnoticum (Penthotal or Hypnomidate), analgeticum (Fentanyl) and muscle relaxant (Curalest) has been used. The patients were further monitored by means of blood pressure measurements (oscillotonometric method), simultaneous pulse count and ECG recording (Datascope 740 Recorder) and blood gases determination from a.femoralis (ABL 1, Radiometer Copenhagen).

Adolescent↗