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Mechanical Ventilation Boot Camp Curriculum
Published on: March 12, 2018
Evaluation of 4 new generation portable ventilators
Thomas C Blakeman1, Richard D Branson
1Division of Trauma and Critical Care, Department of Surgery, University of Cincinnati, Cincinnati, OH 45267, USA. Thomas.Blakeman@uc.edu
Respiratory Care
|July 12, 2012
Summary
This study evaluated four portable ventilators for patient transport, assessing triggering, tidal volume, battery life, and oxygen accuracy. While all devices delivered accurate tidal volumes, two struggled with precise fraction of inspired oxygen delivery.
Area of Science:
- Biomedical Engineering
- Respiratory Care
- Medical Device Evaluation
Background:
- Portable ventilators are crucial for patient transport within and between hospitals.
- Evaluating device performance is essential for ensuring patient safety during transit.
Purpose of the Study:
- To compare the performance of four leading portable ventilators: Impact EMV, CareFusion LTV 1200, Newport HT70, and Hamilton T1.
- To assess key performance metrics including triggering, delivered tidal volume (V(T)) accuracy, battery duration, delivered fraction of inspired oxygen (F(IO(2))) accuracy, and gas consumption.
Main Methods:
- Utilized a microprocessor-controlled breathing simulator to test triggering under varying inspiratory efforts (-2, -4, -8 cm H2O).
- Evaluated delivered V(T) and F(IO(2)) accuracy across operational ranges.
- Determined gas consumption by measuring oxygen depletion from a cylinder at F(IO(2)) 1.0.
- Assessed battery duration by operating ventilators at F(IO(2)) 0.21 until device failure.
Main Results:
- Gas consumption varied significantly, ranging from 9.2 to 16 L/min.
- Battery durations showed wide variability, from 101 to 640 minutes.
- Triggering performance differed between devices but was consistent within each device.
- F(IO(2)) accuracy was compromised in two devices at specific V(T) settings and ranges.
Conclusions:
- Portable ventilator technology continues to advance, with all tested devices demonstrating effective tidal volume delivery.
- Two ventilators exhibited inaccuracies in delivering the fraction of inspired oxygen across various settings.
- No single portable ventilator emerged as superior across all evaluated performance parameters.
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