The Science Journal of the American Association for Respiratory Care

2012 OPEN FORUM Abstracts

EVALUATION OF TWO COMMERCIALLY-AVAILABLE HEATED HUMIDIFIERS FOR T-PIECE RESUSCITATION IN THE DELIVERY ROOM.

Chad E. Weagraff, Kathleen M. Deakins, Nancy A. Johnson, TImothy Myers; Pediatric Respiratory Care, UHCMC Rainbow Babies and Children’s Hospital, Cleveland, OH

BACKGROUND: Newborns have difficulty regulating their core body temperature immediately after birth. Radiant warmers are used to aide in the stabilization of an infant’s core body temperature in the delivery room. Unheated inspired gas (25 sC) from a compressed gas outlet used to power T-piece resuscitators in the delivery room may contribute to the challenges of maintaining consistent core body temperature in the desired range. The purpose of this study was to determine if heated inspired gas delivered by a t-piece resuscitator could be rapidly achieved using two commercially-available humidification systems. METHODS: An Ohmeda 3300 Infant Warmer System (Ohmeda Medical, Wauwatosa, WI) was preheated at 100% power setting to obtain a measured temperature at 33sC. The heated wire 900RD110 Humidified Resuscitation System (Fisher /Paykel, Auckland, NZ) was attached to the MR850 Humidifier and the NeoPIP manual resuscitator (Neoforce Inc. Ivyland, PA). A MediChoice digital thermometer was placed at the t-piece of the circuit to measure the temperature delivered to the simulated patient. The NeoPod T humidification system (Westmed, Tuscon AZ) was filled with 20cc of sterile water was placed on the radiant warmer and attached to the manual resuscitator circuit. A NeoPIP circuit was attached to the NeoPod T and the NeoPIP. The MR850 was set in the invasive mode while the NeoPod T was set to 36°C. The time to reach measured distal temperatures of 34°C and 36°C at the patient wye were evaluated in triplicate for each setting using a stop watch. Mean time to reach temperature for the two systems was compared using an unpaired t-test. RESULTS: Mean values, standard deviations and p values for both humidifiers are displayed in the table below: CONCLUSION: The heated wire 900RD110 Humidified Resuscitation System achieved desired temperatures significantly faster than the NeoPod T. The NeoPod T warm-up time to reach a stabilized targeted temperature is not sufficient for heating inspired gas under a radiant warmer in a delivery room situation. Sponsored Research - None