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Aortic coartation stenting in young population: height matters
Andrea Amici1, Ga-Lem Bethge-Ng2, Peter Ewert1
1Department of Pediatric Cardiology and Congenital Heart Defects, TUM University Hospital, German Heart Center Munich, Munich, Germany.
Revista Espanola De Cardiologia (English Ed.)
|January 17, 2026
Summary
This study found a strong link between stent size and patient height in treating aortic coarctation. A new formula helps predict the right stent diameter for pediatric patients, guiding future interventions.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Medical Engineering
Background:
- Stent implantation is standard for adult aortic coarctation (CoA).
- Pediatric CoA treatment requires repeated stent redilations due to growth, with timing challenges.
- Optimal planning for pediatric CoA interventions is needed.
Purpose of the Study:
- To establish an objective association between stent diameter and body growth parameters in pediatric patients with CoA.
- To develop a predictive model for stent redilation timing.
- To support structured planning of interventions for pediatric aortic coarctation.
Main Methods:
- Retrospective analysis of stent implantations and redilations in pediatric patients (<20 years) with CoA.
- Two cohorts used: a derivation cohort (155 patients) and a validation cohort (198 patients).
- Correlation analyses were performed to assess the relationship between stent diameter and body height.
Main Results:
- A significant linear correlation (ꞇ: 0.737) was found between stent diameter and body height in both cohorts.
- A formula, f(x) = 0.0831•x + 1.86 (where x is height), was derived to estimate appropriate stent diameter.
- Sex-specific reference tables were created based on the formula to guide intervention timing.
Conclusions:
- The derived formula accurately predicts required stent diameter based on body height.
- This tool aids in estimating the number of future procedures and optimizing intervention timing.
- Supports proactive management of pediatric aortic coarctation throughout somatic growth.
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