Interventional Management of Aortic Coarctation

Aortic coarctation, a congenital narrowing of the aortic lumen, may be addressed by percutaneous techniques that restore vessel calibre while minimising invasiveness. Interventional approaches centre on balloon angioplasty and stent implantation, with device choice tailored to patient age, vessel dimensions and lesion morphology. Balloon angioplasty alone offers immediate relief of obstruction but may be complicated by elastic recoil or vessel injury. Stent placement—either balloon-expandable or self-expandable—provides scaffolding to maintain luminal patency, reduce transcoarctation pressure gradients and mitigate restenosis. Advances in stent design, including low-profile delivery systems and bioresorbable materials, have broadened applicability across neonatal, paediatric and adult populations. Imaging guidance, comprising echocardiography, computed tomography and three-dimensional reconstruction, informs procedural planning and optimises device sizing. Long-term surveillance addresses potential complications such as aneurysm formation, stent migration and recurrent obstruction, underscoring the need for multidisciplinary follow-up spanning childhood into adulthood.

Research from Nature Portfolio

A recent clinical series has evaluated the safety and efficacy of self-expandable Nitinol stents in adult and adolescent patients with native coarctation. Implantation of uncovered, self-expanding stents achieved a marked reduction in peak pressure gradient and systolic blood pressure, with sustained results at mid-term follow-up. There were no major procedural complications or in-hospital mortality, and follow-up imaging demonstrated absence of aneurysmal change, stent migration or recurrent stenosis. These findings support the use of self-expandable scaffolds as a durable percutaneous option in suitably selected patients, particularly where vessel angulation or tortuosity might limit balloon-expandable stents.

Interventional Management of Aortic Coarctation publication trend

The graph below shows the total number of articles in interventional management of aortic coarctation across all publications each year (not limited to Nature Index journals).

Technical terms

Aortic coarctation: A congenital constriction of the aortic arch leading to elevated pressure proximal to the narrowing and reduced flow distally.

Balloon angioplasty: A procedure in which an inflatable balloon is used to dilate a stenotic vascular segment, often as a precursor to stenting.

Self-expandable stent: A tubular scaffold made from shape-memory alloy (commonly Nitinol) that expands to a predefined diameter upon deployment, conforming to vessel contours.

Transcatheter intervention: A minimally invasive technique in which devices are delivered to the heart or vessels via percutaneous vascular access, avoiding open surgery.

Echocardiography: Ultrasound imaging of the heart used for procedural guidance, assessment of gradient changes and detection of complications without ionising radiation.

References

1. Evaluation of short and mid-term clinical outcomes in patients with aortic coarctation treated with self-expandable stents. Scientific Reports (2024).
2. Proof of Concept: A New Solution for Low-Profile Transcatheter Implantation of Optimus-L Stents in Small Children. Canadian Journal of Cardiology (2023).
3. Stenting of critical aortic coarctation in neonates between 600 and 1,350 g. Using a transfemoral artery approach. A single center experience. Frontiers in Cardiovascular Medicine (2022).
4. Isolated Coarctation of the Aorta: Current Concepts and Perspectives. Frontiers in Cardiovascular Medicine (2022).