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Pathologic lung function in children and adolescents with congenital heart defects
1Department of Pediatric Cardiology and Cardiosurgery, University Children's Hospital, Bratislava-Kramáre 811 07, Slovakia, Czechoslovakia.
Insights
Congenital heart defects can impact lung function in children and adolescents. This study found varied lung function abnormalities, including restriction and obstruction, in patients with significant heart conditions.
Area of Science:
- Pediatric Cardiology
- Pulmonology
- Medical Physiology
Background:
- Congenital heart defects (CHDs) are common and can affect multiple organ systems.
- Hemodynamically significant CHDs may impact cardiopulmonary development and function.
- Understanding lung function in these patients is crucial for comprehensive care.
Purpose of the Study:
- To evaluate lung function parameters in pediatric patients with hemodynamically significant congenital heart defects.
- To identify patterns of pulmonary dysfunction associated with specific types of CHDs.
Main Methods:
- Lung function tests including spirometry, flow volume, and body plethysmography were performed.
- 213 patients aged 6-21 years with various CHDs were assessed.
- Measurements included vital capacity, total lung capacity (TLC), residual volume (RV), %RV/TLC, expiratory flow rates, and specific airway conductance.
Main Results:
- Pulmonary restriction was predominant in patients with tetralogy of Fallot.
- Pulmonary hyperinflation was more frequent in patients with ventricular septal defect (VSD) and coarctation of the aorta.
- Airway obstruction was most commonly observed in patients with tetralogy of Fallot.
Conclusions:
- Patients with hemodynamically significant congenital heart defects exhibit a spectrum of abnormal lung function parameters.
- Specific patterns of lung dysfunction are associated with different types of CHDs.
- These findings highlight the importance of pulmonary assessment in managing pediatric patients with CHDs.
Abstract:
Lung function tests (i.e., spirometry, flow volume, and body plethysmography) were performed in 213 patients (age 6-21 years, mean 11.3 years) with hemodynamically significant congenital heart defects: atrial septal defect, ventricular septal defect (VSD), tetralogy of Fallot, aortic stenosis and coarctation of the aorta. We measured lung vital capacity, total lung capacity (TLC), residual volume (RV), the percentage ratio of the latter two measurements (%RV/TLC), maximal expiratory flow rates at 25% and 50% of vital capacity, and specific airway conductance. Pulmonary restriction dominated in patients with tetralogy of Fallot; pulmonary hyperinflation was more frequent in patients with VSD and coarctation of the aorta; and obstruction of the airways was observed most frequently in patients with tetralogy of Fallot. In conclusion, we found a range of pathologic lung function parameters in patients with hemodynamically significant congenital heart defects.