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Automatic jet ventilation in children anaesthetized by the T‐piece circuit
Author(s) -
BARAKA ANIS,
MUALLEM MUSA,
CHIDIAC GILBERT,
AYYOUB CHAKIB
Publication year - 1994
Publication title -
pediatric anesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.704
H-Index - 82
eISSN - 1460-9592
pISSN - 1155-5645
DOI - 10.1111/j.1460-9592.1994.tb00154.x
Subject(s) - ventilation (architecture) , medicine , nitrous oxide , anesthesia , jet ventilation , tidal volume , jet (fluid) , volume (thermodynamics) , oxygen , respiratory minute volume , injector , respiratory system , mechanics , mechanical engineering , thermodynamics , chemistry , airway , physics , organic chemistry , engineering
Summary Investigation was carried out in ten children aged between one month and six years, who were anaesthetized by the T‐piece circuit. The volume of the reservoir tubing of the T‐piece was 250 ml. Ventilation was controlled automatically by oxygen jets which were delivered via an injector attached to the reservoir tubing. The oxygen jets were regulated by an electronically‐controlled solenoid valve. The children were ventilated by a tidal volume about 12 ml±kg −1 at a rate of 12‐20 per min depending on their age, while the FGF varied between 3 and 6 l min −1 depending on their body weight. The resulting F IO 2 ranged between 0.32 and 0.34 which was expected from the oxygen:nitrous oxide mixture (1:2), denoting no mixing of the oxygen jets with the anaesthetic mixture. The P A co2 was ventilation‐dependent, and ranged between 4±6‐5±3 kPa (35‐41 mmHg). The results suggest that automatic jet ventilation facilitates controlled ventilation in children anaesthetized by the T‐piece circuit, while maintaining the original simplicity of the T‐piece.;