The Science Journal of the American Association for Respiratory Care

2011 OPEN FORUM Abstracts

A PILOT BENCH STUDY COMPARING THE ACCURACY OF THE NEO-TEE INFANT T-PIECE RESUSCITATION CIRCUIT WITH EXISTING T-PIECE CIRCUITS AND DEVICES.

John T. Gallagher, Kathleen M. Deakins, Timothy R. Myers; Rainbow Babies & Children's Hospital, Cleveland, OH

Introduction: In recent years, t-piece resuscitators have been successfully implemented in clinical practice for manual ventilation of infants in some delivery rooms and Neonatal Intensive Care Units. The Neo-Tee (Mercury Medical, Clearwater, FL), introduced in 2010, is a disposable t-piece resuscitator that operates from a standard flowmeter. Removing the adjustable PIP controller from the Neo-Tee allows the circuit to be used on an existing resuscitator such as the NeoPuff (Fisher and Paykel, Auckland NZ). The purpose of this study is to compare the accuracy of the Neo-Tee circuit versus other commercially available t-piece circuits using the Neopuff. Methods: Four circuit brands: the Neopuff, NeoPEEP (Neoforce, Ivyland PA), GE Resuscitator (GE Healthcare, Wauwatosa, WI) and the Neo-Tee were individually connected to the Neopuff Infant Resuscitator. The circuit T was connected to the NICO 2 breath monitor (Philips Respironics, Wellington, CT) and an infant test lung (Infrasonics, San Diego, CA) with a known compliance of 1 mL/cmH2O. Each circuit was evaluated at ten different pressures ranging from 15/5 to 40/5 cmH20 as set and verified on the Neopuff. Breaths were manually cycled 10 times at each setting for stabilization of pressures. Using the NICO 2 monitor, pressures were measured at each setting on all four types of circuits using flow rates of both 8 LPM and 10 LPM. To determine accuracy, set and measured pressures were compared using the Wilcoxon rank sum test. Error was calculated as the difference (set pressure - measured pressure). Mean and standard deviation was calculated for errors across all pressures. Results: At flow rates of both 8 LPM and 10 LPM, there was no significant difference between measured and set pressures in any of the four circuits tested. Mean errors, standard deviation of errors, and p-values are listed for each circuit in the table below. Conclusion: The Neo-Tee circuit and all other circuits tested accurately delivered pressures when used with the NeoPuff infant resuscitator.
Sponsored Research - None
T-Piece Circuit Evaluation