Rebreathing and semiclosed anaesthetic breathing systems
نویسندگان
چکیده
منابع مشابه
Anaesthetic Breathing Systems
The function of breathing is to maintain a supply of oxygen to the lungs for oxygenation of the tissues, and to remove carbon dioxide from the body. When used for spontaneous ventilation, a breathing circuit must enable a patient to breathe satisfactorily without significantly increasing the work of breathing or the physiological deadspace. It must also conduct inhalational anaesthetic agents t...
متن کاملAnaesthetic breathing systems in the accident and emergency department.
We report two cases where patients with an acute head injury developed hypercapnia as a result of the inappropriate use of the Magill breathing circuit. The Magill circuit is inefficient when used for controlled ventilation because the patient is ventilated with his own expired gas and develops hypercapnia. The suitability of alternative breathing systems are discussed.
متن کاملHow rebreathing anaesthetic systems control PaCO2: studies with a mechanical and a mathematical model.
Results from a proposed equation for rebreathing systems, (formula: see text), were compared with results from a mechanical model "lung" ventilated either with a Bain Breathing Circuit, or a circle system (Eger-Ethans type A) without soda lime. When values for carbon dioxide excretion (VCO2), dead spacetidal volume ratio (VD/VT), minute volume ventilation (VE), and fresh gas flow (VF) were vari...
متن کاملAlveolar gas relationships during the use of semi-closed rebreathing anaesthetic systems.
A black box and a geometrical approach have been used to deduce the relationships between alveolar oxygen and carbon dioxide concentrations when rebreathing occurs during the use of semi-closed anaesthetic rebreathing systems.
متن کاملCarbon dioxide rebreathing with the anaesthetic conserving device, AnaConDa®.
BACKGROUND The anaesthetic conserving device (ACD) AnaConDa(®) was developed to allow the reduced use of inhaled agents by conserving exhaled agent and allowing rebreathing. Elevated has been observed in patients when using this ACD, despite tidal volume compensation for the larger apparatus dead space. The aim of the present study was to determine whether CO(2), like inhaled anaesthetics, adso...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 2007
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.1993.tb06818.x