The use of the Penlon Nuffield 200 in a monoplace hyperbaric oxygen chamber. An evaluation of its use and a clinical report in two patients requiring ventilation for carbon monoxide poisoning.
We modified a Penlon Nuffield 200 for use in a monoplace hyperbaric oxygen chamber by feeding back the chamber pressure to the reducing valve of the Nuffield 200. This provides a compensating mechanism, allowing the ventilator to deliver adequate tidal volumes at pressures of up to 3 atmospheres. We report the laboratory testing of the ventilator and our experience of ventilating two patients with carbon monoxide poisoning. Although compensation is not complete the modification is adequate for short-term clinical use in patients in whom the airway is compromised but who need hyperbaric oxygen therapy.
Lewis
R P
RP
Peterborough District Hospital.
Szafranski
J
J
Bradford
R H
RH
Smith
H S
HS
Crabbe
G G
GG
D000328:Adult; D002249:Carbon Monoxide Poisoning / Q000628:therapy*; D006801:Humans; D006931:Hyperbaric Oxygenation / Q000295:instrumentation*; D008297:Male; D008961:Models, Structural; D012119:Respiration / Q000502:physiology; D013990:Tidal Volume / Q000502:physiology; D012122:Ventilators, Mechanical