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Published on: May 11, 2015
Management of pulmonary hypertension in Down syndrome
Amy Hawkins1, Simon Langton-Hewer, John Henderson
1Departments of Congenital Heart Disease and Respiratory Medicine, Bristol Royal Hospital for Children, Bristol, BS2 8BJ, UK.
Insights
Children with Down syndrome (DS) face higher risks of pulmonary arterial hypertension (PAH). A combined approach involving cardiac, respiratory, and surgical interventions is crucial for managing PAH in these children.
Area of Science:
- Pediatric Cardiology
- Pulmonology
- Genetics
Background:
- Children with Down syndrome (DS) have an increased susceptibility to pulmonary arterial hypertension (PAH).
- Underlying factors include upper airway obstruction and congenital heart disease.
- Effective management strategies for PAH in DS require a multidisciplinary approach.
Purpose of the Study:
- To review the management of pulmonary arterial hypertension (PAH) in children with Down syndrome (DS).
- To propose a systematic protocol for managing PAH in this vulnerable population.
Main Methods:
- Retrospective review of 25 children with DS and PAH assessed between March 2005 and May 2010.
- Inclusion criteria: children with DS referred for PAH assessment.
- Assessments included cardiac catheterization, polysomnography, bronchoscopy, and lung biopsy.
Main Results:
- Cardiac catheterization revealed elevated pulmonary artery pressure and pulmonary vascular resistance (PVR).
- Inhaled nitric oxide and oxygen reduced PVR significantly.
- Respiratory assessments identified airway issues such as malacia and adenotonsillar hypertrophy.
Conclusions:
- Management of PAH in children with DS necessitates a coordinated cardiologic, respiratory, and surgical strategy.
- A proposed protocol involving cardiac catheterization, blood tests, and respiratory evaluation is recommended for systematic patient management.
Unlabelled:
Children with Down syndrome (DS) are at greater risk of pulmonary arterial hypertension (PAH) than the general population, partly due to upper airway obstruction and congenital heart disease. We wished to review our management of PAH and suggest a protocol for the systematic management of these children. Children with DS and PAH were included as referred for assessment from March 2005 to May 2010. Twenty-five patients (13 boys) met inclusion criteria. The median age was 385 days (range, 106 to 5,734); mean tricuspid regurgitation jet was 3.5 (range, 2.7-4.8) m/s. At cardiac catheterisation, mean pulmonary artery mean pressure was 26 mmHg (range, 12 to 46), and mean pulmonary vascular resistance (PVR) was 4.14 U.m² (range, 1.20 to 12.43) at baseline. PVR fell to a mean of 2.68 U.m² (range, 0.38 to 10.69) with 20 ppm inhaled nitric oxide and 100% oxygen. Respiratory assessment included polysomnography (18), bronchoscopy (16), showing malacia (eight), adenotonsillar hypertrophy (eight) and floppy aryepiglottic folds (four). One lung biopsy showed plexogenic arteriopathy, and one was diagnosed with tracheo-oesophageal fistula.
Conclusion:
In order to manage this complex group of patients, a combined cardiological, respiratory and surgical approach was required. A protocol with cardiac catheterisation, blood tests and respiratory assessment is suggested for the management of pulmonary hypertension in these children.
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