Key result
Repaired coarctation of the aorta was associated with significantly lower flow-mediated dilation compared to healthy controls (3.8% vs 6.6%, P < 0.001), indicating conduit artery endothelial dysfunction.
Why the study?
Do patients with repaired coarctation of the aorta exhibit endothelial dysfunction in conduit arteries compared to controls?
Cross-Sectional (n=35)
No
Do patients with repaired coarctation of the aorta exhibit endothelial dysfunction in conduit arteries compared to controls?
Patients with repaired coarctation of the aorta exhibit vascular dysfunction primarily in conduit arteries rather than resistance arteries.
Supports focused vascular evaluation in r-CoA; leaves open whether conduit-predominant dysfunction influences outcomes or warrants targeted interventions.
, P = 0.017) than those in the control group. There were no significant differences in PAT (refractory hyperemia index, 1.86 ± 0.43 versus 1.99 ± 0.59, P = 0.48) and brachio-ankle pulse wave velocity between the two groups.Vascular dysfunction in r-CoA patients, particularly endothelial dysfunction, tends to occur more significantly in conduit arteries than in resistance arteries.
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Nozaki et al. (2018) conducted a cross-sectional in Repaired coarctation of the aorta (n=35). Repaired coarctation of the aorta vs. Healthy controls was evaluated on Flow-mediated dilation (FMD) of the brachial artery (p=<0.001). Repaired coarctation of the aorta was associated with significantly lower flow-mediated dilation compared to healthy controls (3.8% vs 6.6%, P < 0.001), indicating conduit artery endothelial dysfunction.
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