Performance characteristics of seven bilevel mechanical ventilators in pressure-support mode with different cycling criteria: a comparative bench study

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
Yuqing ChenXin Zhou

Abstract

Pressure support ventilation from a bilevel device is a standard technique for non-invasive home ventilation. A bench study was designed to compare the performance and patient-ventilator synchronization of 7 bilevel ventilators, in the presence of system leaks. Ventilators were connected to a Hans Rudolph Series 1101 lung simulator (compliance, 50 mL/cmH2O; expiratory resistance, 20 cmH2O/L/s; respiratory rate, 15 breaths/min; inspiratory time, 1.0 s). All ventilators were set at 15 cmH2O pressure support and 5 cmH2O positive end-expiratory pressure. Tests were conducted at 2 system leaks (12-15 and 25-28 L/min). The performance characteristics and patient-ventilator asynchrony were assessed, including flow, airway pressure, time, and workload. The Breas Vivo30 could not synchronize with the simulator (frequent auto-triggering) at a leak of 25-28 L/min, but provided stable assisted ventilation when the leak was 12-15 L/min. Missed efforts and back-up ventilation occurred for the Weinmann VENTImotion and Airox Smartair Plus, requiring adjustment of trigger effort. All ventilators had a short trigger delay time (<200 ms), but significant differences between devices were found in triggering workload, pressurization appearance, tid...Continue Reading

References

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Citations

Aug 8, 2015·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Yi YangMing Jia
Jun 6, 2020·Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology·Vivian Adaeze NdubuisiChukwuemeka Iyoke
May 21, 2016·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Yuqing ChenXin Zhou

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