The Science Journal of the American Association for Respiratory Care
BACKGROUND: Previous work at our institution demonstrated that nitric oxide / oxygen (NO / O2) mixtures could safely and effectively be delivered via oxyhood in an open environment. The purpose of this study was to determine if NO / O2 mixtures could be delivered into the enclosed environment of a neonatal incubator and to determine the potential environmental threat outside of the incubator.
Methods: An oxyhood (7
Results: Study data are shown below:
|Environmental Exposure Data|
|10 cm from hood opening||25||0.3|
|Inside at top of incubator||12||0.3|
|10 cm above incubator||0.6||0.0|
|At open port (no sleeve)||2.2||0.0|
|At open port, hood up||9.0||0.1|
|At open door||1.2||0.0|
|At open door, hood up||2.5||0.0|
Under all simulated patient care conditions, NO / NO2 concentrations outside the incubator remained under OSHA exposure limits (time weighted average NO = 25ppm, NO2 = 3ppm; peak exposure level NO = 25 ppm; short term exposure level NO2 = 5ppm).
Conclusions: Oxyhood delivery of NO / O2 mixtures is not affected by an incubator. There is no environmental exposure threat posed by delivering NO / O2 mixtures via oxyhoods inside an incubator.