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Canadian Journal of Anesthesia, Vol 22, 719-722, Copyright © 1975 by Canadian Anesthesiologists' Society

A Modification of the Bird Mark VIII Ventilator to Deliver Continuous Positive Pressure Breathing and Intermittent Mandatory Ventilation

G. F. FROST 1, Y. G. DUPUIS 1, and J. A. BAIN 1

1 Department of Anaesthesia and the Department of Respiratory Technology, Victoria Hospital, London, Ontario

A Bird Mark VIII ventilator was modified to produce a simple and inexpensive C.P.P.B. and I.M.V. circuit. A Bain Breathing Circuit allowed the manifold to be placed near the ventilator. The negative pressure and flow to the injector produce C.P.P.B. The continuous flow of the Mapleson D Modification furnished constant inflow to provide humidified fresh gas to the reservoir and the patient circuit for I.M.V. An accompanying graph illustrates suggested flow rates and CO2 elimination (Figure 2).






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Copyright © 1975 by the Canadian Anesthesiologists' Society.