A technique for evaluating expired air mixing devices.
نویسنده
چکیده
A simple method for measuring the efficiency of expired air mixing devices is described. Preliminary studies comparing a number of mixing chambers indicate that the bag-inbottle system is the most efficient. The dependence of mixing efficiency on VT, f and expired flow rate is demonstrated. Two types of mixing failure are distinguished. The clinical implications are discussed, including those relating to deadspace measurement and the diagnosis of pulmonary embolism.
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ورودعنوان ژورنال:
- British journal of anaesthesia
دوره 44 1 شماره
صفحات -
تاریخ انتشار 1972