Tidal Volume Variation With Transport Ventilators

McGough, Edward; Banner, Michael J.; Melker, Richard J.

doi:10.1097/00003246-199012001-00028

Cited by 6 publications

(6 citation statements)

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“…Several evaluations of disaster-type ventilators have been published, [5][6][7][8] but to our knowledge this is the first to evaluate technical performance, autonomy, and ergonomy of ventilators (often called "resuscitators") designed for masscasualty events. Our main findings are:…”

Section: Discussionmentioning

confidence: 99%

Bench Tests of Simple, Handy Ventilators for Pandemics: Performance, Autonomy, and Ergonomy

L’Her

Roy

2011

Respir Care

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Section: Discussionmentioning

confidence: 99%

Bench Tests of Simple, Handy Ventilators for Pandemics: Performance, Autonomy, and Ergonomy

L’Her

Roy

2011

Respir Care

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“…Some other studies looked at the performance of transport ventilators during patient triggered ventilation 4 or volume controlled mode. 5 At present, there are mainly 2 categories of transport ventilator available on the market: pneumatic and turbine. Pneumatic ventilators use compressed oxygen for power, and their performance highly depends on the pressure in the oxygen tank.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ventilators Used During Transport of Critically Ill Patients: A Bench Study

2013

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OBJECTIVE: To evaluate the most recent transport ventilators' operational performance regarding volume delivery in controlled mode, trigger function, and the quality of pressurization in pressure support mode. METHODS: Eight recent transport ventilators were included in a bench study in order to evaluate their accuracy to deliver a set tidal volume under normal resistance and compliance conditions, ARDS conditions, and obstructive conditions. The performance of the triggering system was assessed by the measure of the decrease in pressure and the time delay required to open the inspiratory valve. The quality of pressurization was obtained by computing the integral of the pressure-time curve for the first 300 ms and 500 ms after the onset of inspiration. RESULTS: For the targeted tidal volumes of 300, 500, and 800 mL the errors ranged from -3% to 48%, -7% to 18%, and -5% to 25% in the normal conditions, -4% to 27%, -2% to 35%, and -3% to 35% in the ARDS conditions, and ؊4% to 53%, ؊6% to 30%, and ؊30% to 28% in the obstructive conditions. In pressure support mode the pressure drop range was 0.4 -1.7 cm H 2 O, the trigger delay range was 68 -198 ms, and the pressurization performance (percent of ideal pressurization, as measured by pressure-time product at 300 ms and 500 ms) ranges were -9% to 44% at 300 ms and 6%-66% at 500 ms (P < .01). CONCLUSIONS: There were important differences in the performance of the tested ventilators. The most recent turbine ventilators outperformed the pneumatic ventilators. The best performers among the turbine ventilators proved comparable to modern ICU ventilators.

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“…Several previous bench studies have used the value used in our work. 2,4,9 One can find this value also in some physiological articles. 10 Azarian et al 11 found a wide range for compliance in healthy volunteers (from 100 to 200 mL/cm H 2 O).…”

Section: Choice Of Parametersmentioning

confidence: 73%