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Stabilisation of cardiopulmonary function in newborns with congenital diaphragmatic hernia using lung function
S R Hofmann1, K Stadler, A Heilmann
1Department of Pediatrics, University Hospital Carl Gustav Carus, Dresden, Germany. sigrun.hofmann@uniklinikumdresden.de
Insights
Monitoring lung function and using prostaglandin E1 (PGE1) can improve outcomes for congenital diaphragmatic hernia (CDH) patients with pulmonary hypertension (PHT). This approach aids in stabilizing cardiopulmonary function and preparing newborns for surgery.
Area of Science:
- Pediatric Intensive Care
- Neonatology
- Cardiopulmonary Physiology
Background:
- Congenital diaphragmatic hernia (CDH) often leads to pulmonary hypoplasia and severe pulmonary hypertension (PHT).
- Cardiopulmonary instability poses significant challenges in managing neonates with CDH.
Purpose of the Study:
- To evaluate lung function parameters in CDH patients.
- To assess the efficacy of prostaglandin E1 (PGE1) in stabilizing cardiopulmonary function in CDH with PHT.
Main Methods:
- Observational study of 8 CDH patients (2007-2009) requiring respiratory support.
- Gentle mechanical ventilation adapted to pulmonary hypoplasia based on serial lung function measurements.
- Doppler flow patterns analyzed to correlate with PHT severity.
Main Results:
- Markedly reduced functional residual capacity (FRC) and compliance indicated severe lung hypoplasia.
- PGE1 administration improved severe PHT and facilitated preoperative stabilization in 2 newborns.
- All patients had successful surgery with no complications at 2-year follow-up.
Conclusions:
- Lung function parameter monitoring is crucial for adapting mechanical ventilation in CDH.
- Prostaglandin E1 (PGE1) therapy can ameliorate PHT and aid in preoperative stabilization.
- Optimized ventilation and PGE1 may improve outcomes for CDH patients.
Objective:
Evaluation of lung function parameters and additional use of prostaglandin E1 (PGE1) for the stabilisation of cardiopulmonary function in patients with congenital diaphragmatic hernia (CDH) and pulmonary hypertension (PHT).
Design:
Observational study.
Patients:
Between 2007 and 2009 8 patients with CDH have been treated in our pediatric intensive care unit (gestational age 34 + 0 - 40 + 4 weeks, birth weight 2 160-3 840 g). All patients required respiratory support. Gentle mechanical ventilation adapted to the degree of pulmonary hypoplasia based on serially measurements of lung function parameters to find appropriate ventilator settings has been performed.
Main Results:
Functional residual capacity (FRC) and compliance of the respiratory system in all patients were markedly reduced. A FRC between 9.3-10.6 ml/kg and compliance between 1.1-1.8 ml/kPa/kg indicated pronounced hypoplasia of the lungs. Doppler flow patterns through the arterial duct were classified into left-to-right, right-to-left and bidirectional shunting and correlated to the degree of PHT. The additional use of PGE1 to reopen the arterial duct and to stabilize right ventricular function led to an amelioration of severe PHT and preoperative stabilisation in 2 newborns with pronounced pulmonary hypoplasia. All patients underwent successful surgery, and did not show any complications after 2 years follow-up.
Conclusion:
Measurements of lung function parameters and adaptation of mechanical ventilation to the degree of pulmonary hypoplasia and additional therapy with PGE1 may help to improve the outcome in CDH patients.
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