ENCLOSED AFFERENT RESERVOIR BREATHING SYSTEMS
نویسندگان
چکیده
منابع مشابه
Enclosed afferent reservoir breathing systems. Description and clinical evaluation.
A new group of breathing systems, namely the Enclosed Afferent Reservoir (EAR) systems, is described. They allow for the selective elimination of alveolar gas in association with both spontaneous and controlled ventilation. A comparison with the Bain system in controlled ventilation demonstrates greater efficiency in eliminating carbon dioxide. A fresh gas flow (VF) of 70 ml kg-1 min-1 using an...
متن کاملFresh gas requirements of an enclosed afferent reservoir breathing system in anaesthetized, spontaneously breathing adults.
Using two methods of determining the onset of rebreathing, we have determined the minimum fresh gas flow rate (VF) of the Ohmeda enclosed afferent reservoir breathing system (EAR) in anaesthetized, spontaneously breathing adults. Rebreathing as defined by the Kain and Nunn criteria did not occur when the VF/VE ratio was greater than 0.70. A mathematical model was used to calculate the degree of...
متن کاملFresh 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:...
متن کاملEfficiency of an enclosed afferent reservoir breathing system during controlled ventilation.
We describe an enclosed afferent reservoir (EAR) breathing system developed by Ohmeda and designed to operate efficiently in spontaneous and controlled ventilation. The efficiency of the system was evaluated by calculating the fractional utilization of fresh gas in 10 ASA I-III patients during anaesthesia with controlled ventilation. Maximum efficiency occurred when the minute ventilation to fr...
متن کاملAnaesthesia Breathing Systems
Anaesthesia Breathing System (formerly known as anaesthesia Breathing Apparatus or Anaesthesia Breathing Circuit) is an interface between the anaesthetic machine and the patient. They evolved over 160 years from the open systems used by Morton to the present day closed systems using carbon dioxide absorbents. The main purpose of these systems is to deliver the required oxygen and anaesthetic ga...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1988
ISSN: 0007-0912
DOI: 10.1093/bja/60.4.469