The Science Journal of the American Association for Respiratory Care

2007 OPEN FORUM Abstracts

A BENCH STUDY OF THE PNEUPAC VR 1: A RESUSCITATION DEVICE FOR FIRST RESPONDERS

J. Rebel1, M. Trevino1, G. Weinstein1

Background: The respiratory therapy directors and managers, of our thirteen facility healthcare system, periodically meet to discuss issues relevant to the administration of each department and to discuss systemness across the organization. One such subject was the management of patient care during a mass casualty event. Our entity volunteered to evaluate the Pneupac VR1 as a potential first responder ventilator for use during high capacity disasters.

MATERIALS AND Methods: A bench study, using a Michigan Instruments TTL lung simulator, was performed on the Pneupac VR1 transport ventilator. Test conditions on the simulator reflected normal resistance with compliances of 0.05 and 0.02 L/cmH20. In the AUTO mode, we evaluated the three primary tidal volume/rate (VT/f) combinations: 150/25, 600/12 and 1050/10, (the instrument also has gradations of 150 ml’s between settings). These represent the low and high end of the device parameters. A Smiths Medical Pneupac circuit was used and measurements were made using a Fluke Biomedical VT PLUS HF Gas Flow analyzer. The instrument was re-calibrated between all measurements. Measurement conditions reflected a room temperature of 24 degrees Celsius and a barometric pressure of 756 mmHg.

Results: There were no clinically significant differences within the two compliance settings of 0.02 or 0.05 L/cm. Peak inspiratory pressures, VT and I:E ratios were within the expected variance. Manufacturer’s specifications describe up to a 15% variance for VT and frequency and up to a 20% variance for I:E ratio (table 1). The demand valve functioned as indicated by the manufacturer in both the manual and AUTO mode. The audible/pressure relief alarm operated at the reported 40 cmH2O setting. Both manual controls triggered the manual breath as advertised. The device also did allow spontaneous ventilation during the AUTO mode via the demand valve.

Conclusions: The Pneupac VR 1 is an inexpensive reliable device that provided consistently reproducible results. Its ability to function with a device/mask interface or a circuit offers a unique benefit. Additionally, its portability and ease of use make it a handy device for potential use by first responders. The lack of an onboard alarm system requires personal attendance when the device is used.

Table 1
Settings 150/25 600/12 1050/10
Vt 158 ± 17 722 ± 20 1223 ± 20
Rate 24.5 ± 2 11.9 ± 0.2 9.4
Flow 12.74 ± 0.35 24.65 ± 0.07 34.38 ± 0.1
I:E Ratio 1:1.75 ± 0.03 1:1.75 ± 0.05 1:1.86 ± 0.01



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