Minimum fresh gas flow requirements of anaesthetic breathing systems during spontaneous ventilation: a graphical approach
نویسندگان
چکیده
منابع مشابه
Fresh gas requirements of an enclosed afferent reservoir breathing system during controlled ventilation in children.
An enclosed afferent reservoir breathing system (EAR) designed by Ohmeda was evaluated during anaesthesia with controlled ventilation in 104 healthy children. Carbon dioxide production and arterial carbon dioxide tension were measured in 12 children in order to determine the proportion of fresh gas (VF) involved in gas exchange. When the ratio of minute volume ventilation to fresh gas flow (VE:...
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Thirty-two pregnant patients at term undergoing elective Caesarean section were ventilated with a non-co-axial ADE anaesthetic system (E mode) supplied with fresh gas flows (FGF) of either 70 or 100 ml kg-1 min-1, on a random basis. Ventilation with an FGF of 70 ml kg-1 min-1 produced mean PaCO2 and PE' CO2 values of 6.48 +/- 1.15 kPa and 6.41 +/- 0.76 kPa, respectively. Patients were thus hype...
متن کاملBaby EAR circuit: a clinical determination of optimal fresh gas flow in spontaneous breathing anesthesia.
BACKGROUND Baby EAR circuit is a new modified enclosed afferent reservoir anesthetic breathing system invented to use in pediatric patients. By following His Majesty the King of Thailand's self-sufficiency philosophy, the circuit is simplymade of low-cost and easy-to-find materials in the operating room. OBJECTIVE Investigate clinical use of the circuit and to find the optimal fresh gas flow ...
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The objective of mechanical ventilation used in the management of Acute Respiratory Distress Syndrome (ARDS) is to ensure adequate tissue oxygenation and alveolar ventilation while limiting the patients’ work of breathing and preventing further damage to the lungs. Although the “partial support” ventilation modes were initially developed to assist weaning or liberation from supported ventilatio...
متن کاملGas exchange during mechanical ventilation and spontaneous breathing. Intermittent mandatory ventilation after open heart surgery.
Pulmonary gas exchange rates in eight patients after open heart surgery were studied during weaning from the ventilator. We investigated continuous positive pressure ventilation (CPPV), intermittent mandatory ventilation (IMV) and spontaneous breathing with continuous positive airway pressure (CPAP). During each mode of ventilation we measured: CO2 production (VCO2), O2 consumption (VO2), cardi...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 1987
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.1987.tb05318.x