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The ductus arteriosus in neonates with critical congenital heart disease
Craig R Wheeler1, Shawn Sen2, Philip T Levy3
1Department of Respiratory Care & ECMO, Boston Children's Hospital, Boston, MA, USA.
Insights
The ductus arteriosus (DA) plays a critical role in neonates with congenital heart disease (CHD). Understanding its paradoxical function is key to managing blood flow and surgical timing in these complex cases.
Area of Science:
- Neonatal cardiology
- Pediatric cardiovascular physiology
- Congenital heart disease management
Background:
- The ductus arteriosus (DA) has a complex, paradoxical role in neonates with congenital heart disease (CHD).
- Critical congenital cardiac lesions often depend on DA patency for essential systemic or pulmonary blood flow.
- A persistently patent ductus arteriosus (PDA) can lead to adverse outcomes due to shunting and ductal steal.
Purpose of the Study:
- To elucidate the dual role of the ductus arteriosus in neonatal CHD.
- To discuss the challenges posed by PDA in medical and surgical management.
- To review current and novel strategies for manipulating the DA to support circulation in CHD neonates.
Main Methods:
- This is a perspective article, synthesizing existing knowledge.
- It involves a review of the physiological role of the DA in CHD.
- Discussion of traditional and emerging therapeutic approaches.
Main Results:
- The DA's patency is vital for specific congenital heart lesions, providing necessary blood flow.
- Conversely, an overly patent DA can cause detrimental shunting and volume overload.
- Management of the DA is crucial for optimizing circulatory support and surgical planning.
Conclusions:
- The DA presents a management challenge in CHD due to its dual role.
- Understanding DA physiology is essential for effective treatment strategies.
- Manipulation of the DA offers therapeutic potential for supporting neonatal circulation in CHD.
Abstract:
The ductus arteriosus (DA) has a paradoxical biological role in neonates with congenital heart disease (CHD) and can present with significant management challenges. Critical congenital cardiac lesions rely on the patency of the DA to provide either systemic or pulmonary blood flow. A patent DA (PDA) that remains open can also have adverse consequences depending on the degree of systemic to-pulmonary shunting and volume of ductal steal. As such, the presence of a PDA may pose a challenge in the medical management and timing of surgical repair. In this perspective article, we provide an understanding of the role of the DA in the circulatory system in neonates with CHD and discuss traditional and emerging approaches to support the pulmonary and systemic circulations with manipulation of the DA.
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