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Negative / Null Result ReportOpen accessMedicine

Ductus Arteriosus Morphology in Pulmonary Atresia With Ventricular Septal Defect: A Retrospective Case Series Comparing Echocardiography and Digital Subtraction Angiography.

Quan TT; Nguyen HM; Nguyen HT; Nguyen BAH · 2026 · Cureus

WASTE classifies this as Negative / Null Result Report · AI classification, approximate

The study found no significant effect — useful as a negative control or null benchmark for your own design.

Abstract (excerpt)

Objective This study aims to describe ductus arteriosus (DA) morphology in patients with pulmonary atresia with ventricular septal defect (PA-VSD) and to assess exploratory paired differences between echocardiography and digital…

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Metadata source: Europe PMC · DOI 10.7759/cureus.108765