The Science Journal of the American Association for Respiratory Care

2012 OPEN FORUM Abstracts

EVALUATION OF AN UNINTERRUPTABLE POWER SUPPLY SYSTEM TO IMPROVE PATIENT SAFETY DURING HIGH FREQUENCY OSCILLATORY VENTILATION.

Justin Hotz, Edwin Khatchetourian, Aaron Clute, Ed Guerrero, Dan Villareal, Leo Langga; Respiratory Care Services, ChildrenÂ’s Hospital Los Angeles, Los Angeles, CA

Background: The Sensormedics High Frequency Oscillator Ventilator (HFOV) 3100A and 3100B are frequently used in the management of critically ill neonatal and pediatric patients. Currently, these ventilators do not have a backup battery, and are at risk of terminating ventilation during power failure. There is few published literature addressing this patient safety risk. We evaluated an uninterruptable power supply (UPS) system for use with the Sensormedics 3100 A and B as a power back-up to provide uninterrupted ventilation during a power failure. Methods: To evaluate the effective operational time of the TRIPP-LITE UPS system (SMART 1200 XLHG), we tested it on a Sensormedics 3100 A and 3100 B with a standard neonatal and pediatric workload. Both ventilators were calibrated and set-up according to manufacturer specifications. A 2.5 mm I.D. endotracheal tube connected to a Maquet neonatal test lung was attached to the Sensormedics 3100A and placed on settings of: Amplitude 30 cmH20; Mean Airway Pressure of 12 cmH20; 10 Hertz; FiO2 of 0.60, I-time 33%, and Bias Flow of 20 LPM. A 5.5 mm I.D. endotracheal tube, connected to an adult Maquet test lung, was used with the Sensormedics 3100 B on settings of: Amplitude 40 cmH20; Mean Airway Pressure of 16 cmH20; 7 Hertz; 100% oxygen; I-time 33%; and Bias Flow of 30 LPM. Both ventilators were connected to two separate fully charged TRIPP-LITE UPS systems, and were then run continuously until the UPS system was completely exhausted. Results: The TRIPP-LITE UPS system supporting the Sensormedics 3100B gave its first warning alarm at 35 minutes of use. Five minutes later, it gave its second warning alarm, and completely turned off after a total of 1 hour and 10 minutes of use. The TRIPP-LITE UPS system supporting the Sensormedics 3100A gave its first warning alarm at 1 hour of use. Twelve minutes later, it gave its second warning alarm, and completely turned off after a total of 2 hours and 4 minutes of use. Conclusion: The TRIPP-LITE UPS system is able to provide effective short term back-up support for the Sensormedics 3100A and 3100B in the presence of a power failure. Sponsored Research - None