Key result
Neonatal aortic coarctation modeling suggests halving distal PWV yields a ~4-fold drop in pressure variation.
Why the study?
Neonatal aortic coarctation remains difficult to diagnose before hemodynamic deterioration occurs after ductal closure, and pulse wave velocity may reflect associated functional vascular alterations.
A theoretical mathematical model supports the physiological plausibility of combining pulse wave velocity assessment with pressure-gradient evaluation for screening neonatal aortic coarctation.
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Supports combining PWV with pressure-gradient evaluation for neonatal CoA screening; extends Moens–Korteweg modeling to coarctation.
Background: Neonatal aortic coarctation (CoA) remains difficult to diagnose before hemodynamic deterioration occurs after ductal closure. Pulse wave velocity (PWV) may reflect functional vascular alterations associated with CoA. Methods: A simplified hemodynamic mathematical model describing pulse wave propagation across aortic coarctation has been developed. The model is based on conservation of energy principles and incorporates simplified assumptions regarding arterial compliance to relate PWV changes to systolic–diastolic pressure. Results: The model suggests a nonlinear relationship between PWV reduction distal to the coarctation and pressure excursion damping. Specifically, a twofold PWV reduction corresponds theoretically to an approximately fourfold reduction in systolic–diastolic pressure variation. The derived relationships were shown to be conceptually consistent with the Moens–Korteweg formulation and Laplace law. Conclusions: This theoretical framework supports the physiological plausibility of combining PWV assessment with pressure-gradient evaluation in neonatal CoA screening. Future studies are required to validate the model in clinical settings and define diagnostic thresholds.
Thomasset et al. (2026) studied Neonatal aortic coarctation. Pulse wave velocity (PWV) assessment was evaluated on Relationship between PWV reduction and pressure excursion damping. A mathematical model of neonatal aortic coarctation suggests that a twofold reduction in pulse wave velocity distal to the coarctation corresponds to a fourfold reduction in pressure variation.
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