Respiratory care
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Colorimetric end-tidal carbon dioxide (ETCO2) detectors can identify airway obstruction during noninvasive ventilation and successful intubation during newborn resuscitation. The resistance of these devices is not well described, and the information provided by manufacturers is incomplete. ⋯ We found significant differences in resistance between devices used to detect ETCO2 during resuscitation of premature infants. Future trials are needed to determine the effects of this resistance on work of breathing, particularly on very premature newborns receiving mask CPAP.