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Published on: May 4, 2021
Inhaled nitric oxide improves oxygen saturation in children with pulmonary arteriovenous malformations after the
Waldemar F Carlo1, David P Nelson
1Division of Pediatric Cardiology, Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA. wfcarlo@peds.uab.edu
Insights
Inhaled nitric oxide effectively treated hypoxemia in children with pulmonary arteriovenous malformations post-Fontan procedure. This intervention improved oxygen saturation and may reduce complications.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Surgery
- Pulmonary Hypertension
Background:
- The Fontan procedure is a palliative surgery for complex congenital heart disease.
- Pulmonary arteriovenous malformations (PAVMs) are a known complication after the Fontan procedure.
- Hypoxemia is a significant postoperative concern in these patients.
Observation:
- Three pediatric patients developed severe hypoxemia after Fontan surgery despite maximal respiratory support.
- Pulmonary arteriovenous malformations were identified as the cause of persistent hypoxemia.
- Inhaled nitric oxide (iNO) was administered to improve oxygenation.
Findings:
- iNO administration resulted in rapid and significant improvement in oxygen saturation in all three patients.
- Patients were successfully weaned from iNO.
- No adverse events were reported during iNO therapy.
Implications:
- Inhaled nitric oxide is a valuable therapeutic option for managing hypoxemia in children with PAVMs post-Fontan procedure.
- Early use of iNO may prevent prolonged mechanical ventilation and reduce the need for further diagnostic interventions.
- This approach could potentially shorten hospital stays and decrease associated morbidities.
Objective:
To report the utility of inhaled nitric oxide to ameliorate excessive hypoxemia in children with pulmonary arteriovenous malformations after the Fontan procedure.
Design:
Case series.
Setting:
A tertiary pediatric cardiac intensive care unit in a freestanding children's hospital.
Patients:
Three children with complex congenital heart disease and pulmonary arteriovenous malformations who underwent the Fontan procedure.
Interventions:
The 3 patients all exhibited moderate-to-severe hypoxemia in the immediate postoperative period. The hypoxemia persisted despite mechanical ventilation and oxygen at an Fio2 of 1.0. Inhaled nitric oxide was initiated with immediate and dramatic improvements in oxygen saturation in all patients. All patients were eventually weaned off inhaled nitric oxide.
Conclusions:
The use of inhaled nitric oxide in patients with pulmonary arteriovenous malformations after having the Fontan procedure improves hypoxemia and may potentially reduce postoperative morbidity, unnecessary testing, and duration of hospital stay.
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