The Science Journal of the American Association for Respiratory Care

2009 OPEN FORUM Abstracts

PORTABLE HIGH FLOW NASAL CANNULA SYSTEM ADULT MODEL

Kyle M. Walsh1, Patricia A. Dailey2, Ploypan Thongpradit1; 1Clinical Engineering, Baystate Health, Springfield, MA; 2Respiratory Care, Baystate Health, Springfield, MA

INTRODUCTION: Humidified High Flow Nasal Cannula (HHFNC) application is often implemented in critically ill patients presenting with respiratory distress to provide a less invasive means of support. Interruption of HHFNC therapy during transport has been implicated in detrimental patient outcomes. Our objective was to develop a practical system for patient transport with our HHFNC. METHOD: The HHFNC system included a calibrated air entrainment device (Maxtec OptiVenturi, Salt Lake City, Utah) connected to a 50psi oxygen source which provided 40% oxygen at 50 lpm to the humidifier (Fisher & Paykel MR 850, Auckland, New Zealand) attached to a small high flow cannula (Fisher & Paykel Optiflow, Auckland, New Zealand). The humidifier was plugged into AC power through the Uninterruptible Power Supply (UPS) battery (Leviton U1500-OSK, Little Neck, NY) until heated and humidified to 37∞C in the invasive mode. The UPS was then disconnected from AC power providing DC power to the humidifier and was run to depletion. RESULTS: The UPS was able to power the humidifier for an average of 67 minutes (n=3; SD 0.58) while maintaining a constant temperature of 37∞ C (SD 0.16) at 50 lpm of 40% oxygen. CONCLUSIONS: In this model, a UPS with a pure sine wave was required to produce a recognizable current to power the humidifier. Our project demonstrated that this system was able to provide more than an hour of usable time while consistently maintaining a temperature of 37∞ C, creating a viable, practical and portable option for HHFNC transport. Sponsored Research - None

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