Why the study?
The precise steps involved in the development of the atrioventricular conduction axis remain incompletely understood, despite extensive anatomical and histological studies.
Population
Human embryonic and fetal heart specimens encompassing Carnegie stage 17 through 23 to a newborn (42 weeks)
Design
Observational study of serial histological sections and micro-computed tomographic datasets with blinded interobserver evaluation
Key result
Analysis of human embryonic and fetal hearts showed that fasciculo-ventricular pathways largely persist throughout gestation, whereas most nodoventricular pathways are disrupted.
Authors
Loading...
May inform congenital arrhythmia mechanisms; leaves open whether remodeling patterns predict postnatal conduction disorders.
Observational
Blinded interobserver evaluation
Nevado-Medina et al. (2026) conducted an observational in Embryonic and fetal human heart development. Developmental morphological remodeling was evaluated on Morphological remodeling and insulation of the atrioventricular conduction axis. Analysis of human embryonic and fetal hearts showed that fasciculo-ventricular pathways largely persist throughout gestation, whereas most nodoventricular pathways are disrupted.