Assessment of the Caradyne WhisperFlow for administration of continuous positive airway pressure in a 3 Tesla magnetic resonance scanner.

Steiner, L.A., Chatfield, D., Donovan, Tim, Coles, Jonathan and Menon, D.K. (2002) Assessment of the Caradyne WhisperFlow for administration of continuous positive airway pressure in a 3 Tesla magnetic resonance scanner. Anaesthesia, 57 (5). pp. 470-474. Full text not available from this repository.

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Abstract

Demand for magnetic resonance investigations in critically ill patients is increasing. While these patients frequently need ventilatory support, not all of them require controlled ventilation and many may be treated with continuous positive airway pressure. Controlled ventilation, with the concurrent need for sedation, may be inappropriate when airway physiology is being studied and may retard weaning. No commercially available ventilator designed for the magnetic resonance environment can deliver high flow continuous positive airway pressure. We tested the Caradyne Whisperflow flow generator and five Whisperflow valves (2.5-15 cmH2O airway pressure) within a 3 Tesla environment for safety and possible dysfunction. All components had minimal ferromagnetic properties and tests showed no clinically relevant change in flow delivery or oxygen concentration in the magnetic field. In addition, the airway pressure generated by the valves was not affected by the magnetic field. We conclude that the tested system can be safely used in a 3 Tesla magnetic resonance environment..

Item Type: Article
Journal or Publication Title: Anaesthesia
Publisher: Wiley - Blackwell
ISSN: Print ISSN: 0003-2409 Online ISSN: 1365-2044
Departments: Faculty of Health and Science > Medical and Sports Sciences > Health and Medical Sciences
Depositing User: Insight Administrator
Date Deposited: 17 Oct 2011 09:09
Last Modified: 26 Aug 2016 16:09
URI: http://insight.cumbria.ac.uk/id/eprint/1043

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