A new generation of anaesthetic ventilators

Adams, A. P.; Henville, J. D.

doi:10.1111/j.1365-2044.1977.tb11555.x

Cited by 26 publications

(4 citation statements)

References 7 publications

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“…The circuit was adapted for IPPV by the replacement of the breathing bag with the patient valve of a Pneupac Model 2 ventilatorresuscitator. This pneumatic logic device, described elsewhere (Adams and Henville, 1977) is driven by a separate 400-kPa oxygen supply, and is used both to ventilate the circle and act as the source of fresh oxygen, the machine flowmeter shown at the top of figure 1 being turned off during IPPV. As the patient continues to take up oxygen, this will be replaced from the ventilator limb.…”

Section: Methodsmentioning

confidence: 99%

Closed-Circuit Halothane and Enflurane Using an in-Circle Goldman Vaporizer

Jordan

Bushman

1981

British Journal of Anaesthesia

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A closed-circle absorber system incorporating an in-circle Goldman vaporizer was used to administer halothane or enflurane in oxygen to adult patients. The attained inspired and end-tidal concentrations of volatile agent after a period of stabilization at each vaporizer setting were measured by mass spectrometry. During spontaneous respiration under halothane the ranges of inspired concentrations at settings 1, 11/2 and 2 were respectively 0.5-0.9%, 1.4-2.4% and 3.3-4.5%. corresponding inspired enflurane concentrations at the same settings were 0.8-1.4%, 1.9-2.8% and 3.7-5.0%. IPPV to 5% end-tidal carbon dioxide, although increasing the inspired concentrations slightly, produced considerable increases in end-tidal concentrations. Minimal pre-oxygenation was used to assess the problem of nitrogen accumulation within the circuit. The maximum nitrogen concentration was 56%.

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Section: Methodsmentioning

confidence: 99%

Closed-Circuit Halothane and Enflurane Using an in-Circle Goldman Vaporizer

Jordan

Bushman

1981

British Journal of Anaesthesia

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“…The Nuffield Anaesthetic Ventilator (previously known as Pneupac A.P.) (Adams and Henville, 1977) is a compact, gas-powered, pneumatic logic ventilator which incorporates a detachable patient valve. When this valve is removed, the control module may be used to cycle a high-pressure gas source in the manner described by Gillick (1976).…”

mentioning

confidence: 99%

Anaesthesia for Laryngoscopy: A Technique Using the Nuffield Anaesthetic Ventilator

Pybus

O’Connor

Henville

1978

British Journal of Anaesthesia

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“…4 It has been suggested that, with the patient valve removed, this ventilator can be used to provide lung ventilation by the injector technique for patients undergoing bronchoscopy or laryngo~copy.~ This study has been undertaken to establish the feasibility of ventilating patients undergoing bronchoscopy with oxygen or 'Entonox' jets delivered by the ventilator through an injector. The factors determining the adequacy of ventilation and the degree of air entrainment which is likely to * Previously known as the A-P ventilator; Penlon Ltd, Radley Road, Abingdon, Oxon.…”

mentioning

confidence: 99%