TY - JOUR
AU - Nisbet, H.
AB - G.A. VOLCYESI ANY H.I.A. NISBET, M.~., C_~.a., F.~'.A.a.C.S.(rNC. ), C.~.O.P. (C)" SP~C~L SQUIrM~r is needed to study the effect of long-term positive pressure ventilation on functional residual capacity (FRC), oxygen consumption ('r and other respiratory parameters. The apparatus must be small, portable and able to ventilate the patient in closed circuit during FRC measurement, and it must provide various tidal volumes and minute ventilation for patients of different sizes. The operator of the equipment must be able to stop ventilation at any chosen point on the respiratory cycle and restart it from the same point to allow the switch- ing of the patient in and out of the closed circuit without changing thc pattern of ventilation. The equipment must also allow the collection of pure expired gases for analysis and must be safe and reliable. We have designed a ventilator which makes possible the measurement of changes in FRC, VO2, and pulmonary mechanics of anaesthetized children, Simplified meohanieal details appear in Figure 1, The piston (P) of a 1500 ee syringe moves back and forth under the influence of compressed air and vacuum, alternately sup- plied to the chamber behind the piston through solenoid valves SA and SV respec- 
TI - A new piston ventilator for use in respiratory studies
JO - Canadian Journal of Anesthesia/Journal canadien d'anesthésie
DO - 10.1007/BF03006113
DA - 2008-12-06
UR - https://www.deepdyve.com/lp/springer-journals/a-new-piston-ventilator-for-use-in-respiratory-studies-7hsvIM52Dt
SP - 662
EP - 669
VL - 19
IS - 6
DP - DeepDyve
ER -