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Updated: Jul 13, 2026

A Novel Inhalation Mask System to Deliver High Concentrations of Nitric Oxide Gas in Spontaneously Breathing Subjects
Published on: May 4, 2021
Inhaled nitric oxide for the prevention of bronchopulmonary dysplasia
1University of Missouri-Kansas City School of Medicine, Department of Pediatrics, Section of Neonatal-Perinatal Medicine, Children's Mercy Hospitals and Clinics, Kansas City, Missouri 64108, USA. wtruog@cmh.edu
Insights
Inhaled nitric oxide (iNO) therapy shows promise in reducing bronchopulmonary dysplasia (BPD) in preterm infants. Further research is needed to determine optimal use and patient selection for this intervention.
Area of Science:
- Neonatal medicine
- Respiratory medicine
- Pharmacology
Background:
- Bronchopulmonary dysplasia (BPD) is a significant concern in preterm infants.
- Inhaled nitric oxide (iNO) is being investigated as a potential therapy for BPD.
- Previous studies have provided preliminary data on iNO's efficacy.
Purpose of the Study:
- To review and critique the current scientific literature on inhaled nitric oxide (iNO) for BPD prevention or amelioration in preterm infants.
- To assess the state of the art and science of iNO therapy in this population.
Main Methods:
- Systematic review and critique of published information.
- Analysis of six definitive, placebo-controlled clinical trials (>2100 preterm infants).
- Consideration of earlier non-definitive studies (>350 preterm infants).
Main Results:
- Substantial clinical experience supports the utility of iNO in preterm infants.
- iNO therapy can decrease the incidence and possibly the severity of BPD.
- Optimal treatment parameters (timing, dose, duration, route) and patient selection remain undetermined.
Conclusions:
- Inhaled nitric oxide (iNO) is a promising therapy for reducing BPD in preterm infants.
- Further research is required to optimize iNO treatment strategies.
- Potential adverse neurological effects must be carefully monitored.
Abstract:
This review provides the readers with background information on the state of the art and science of inhaled nitric oxide (iNO) as therapy for prevention or amelioration of bronchopulmonary dysplasia (BPD) in preterm infants. The goal is to review and critique relevant published information. A total of six clinical trials, all placebo-controlled, four out of six blinded, four out of six multi-centered with a predetermined outcome of reduction in death or BPD, have been reported in full text. These definitive studies have included a total of > 2100 preterm, mostly very preterm, infants. Their designs were informed by results of earlier non-definitive studies which cumulatively enrolled > 350 preterm patients. This very substantial experience provides a firm framework for asserting that iNO will be useful in this population of patients. The use of iNO can reduce the occurrence of BPD and possibly the severity of the disorder. Optimal time of initiation, dosing (both initial dose, duration of treatment and possibly the route of administration) and most importantly, optimal patient subset selection, are not determined. Any clear adverse neurological finding in iNO-treated infants will of course limit or halt the use of this promising therapy.
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