A NEW VALVELESS ALL-PURPOSE VENTILATOR
Open Access
- 1 October 1983
- journal article
- research article
- Published by Elsevier in British Journal of Anaesthesia
- Vol. 55 (10) , 1017-1023
- https://doi.org/10.1093/bja/55.10.1017
Abstract
Preliminary clinical evaluation of a new ventilator, which embodies a new valveless design principle and a circuit which is open to atmosphere, has been performed on adult patients undergoing surgery. Using normal respiratory fresh gas flows (100ml kg−1 min−1) PaCO2 and PaO2 were the same as with a conventional ventilator. High frequency ventilation (HFV) up to 100 b.p.m. caused no statistically significant changes in PacO2 and PaO2. The peak airway pressures were 30% less than with a Manley ventilator and decreased by a further 40% during HFV. PEEP, NEEP, CPAP and IMV were easily applied.Keywords
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