This article requires a subscription to view the full text. If you have a subscription you may use the login form below to view the article. Access to this article can also be purchased.
Abstract
BACKGROUND: Many pediatric and neonatal ICU patients receive nitric oxide (NO), with some also requiring magnetic resonance imaging (MRI) scans. MRI-compatible NO delivery devices are not always available. We describe and bench test a method of delivering NO during MRI using standard equipment in which a NO delivery device was positioned in the MRI control room with the NO blender component connected to oxygen and set to 80 ppm and delivering flow via 12 m of tubing to a MRI-compatible ventilator, set up inside the MRI scanner magnet room.
METHODS: For our bench test, the ventilator was set up normally and connected to an infant test lung to simulate several patients of differing weight (ie, 4 kg, 10 kg, 20 kg). The NO blender delivered flows of 2–10 L/min to the ventilator to achieve a range of NO and oxygen concentrations monitored via extended tubing. The measured values were compared to calculated values.
RESULTS: A range of NO concentrations (12–41 ppm) and FIO2 values (0.67–0.97) were achieved during the bench testing. The additional flow increased delivered peak inspiratory pressure and PEEP by 1–5 cm H2O. Calculated values were within acceptable ranges and were used to create a lookup table.
CONCLUSIONS: In clinical use, this system can safely generate a range of NO flows of 15–42 ppm with an accompanying FIO2 range of 0.34–0.98.
Footnotes
- Correspondence: Bradley G Carter PhD, Paediatric Intensive Care Unit, Royal Children’s Hospital, Flemington Road, Parkville, Victoria 3052, Australia. E-mail: bradley.carter{at}rch.org.au
Supplementary material related to this paper is available at http://www.rcjournal.com.
The authors have disclosed no conflicts of interest.
- Copyright © 2021 by Daedalus Enterprises
Pay Per Article - You may access this article (from the computer you are currently using) for 1 day for US$30.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.
Log in using your username and password
