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Related Experiment Video

Updated: May 28, 2026

Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods

Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods

Published on: March 10, 2020

How do we define congenital heart defects for scientific studies?

Ester Garne¹, Morten Smaerup Olsen, Søren Paaske Johnsen

¹Paediatric Department, Hospital Lillebaelt, Kolding, Denmark.ester.garne@slb.regionsyddanmark.dk

Congenital Heart Disease

|October 21, 2011

Summary

Estimates of congenital heart defect (CHD) prevalence vary due to differing definitions. This study refines CHD definitions, including patent ductus arteriosus and atrial septal defects, to improve data accuracy for research and public health.

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Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods

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A Pipeline to Characterize Structural Heart Defects in the Fetal Mouse

A Pipeline to Characterize Structural Heart Defects in the Fetal Mouse

Published on: December 16, 2022

Area of Science:

Cardiology
Pediatrics
Public Health

Background:

Prevalence estimates for congenital heart defects (CHD) vary significantly due to inconsistent case definitions.
The increasing use of echocardiography in neonatal care can lead to the overdiagnosis of CHD, inflating prevalence rates.
Accurate CHD prevalence data are crucial for etiological research, treatment planning, and outcome studies.

Purpose of the Study:

To address the variability in published CHD prevalence estimates.
To refine the definition of CHD cases for epidemiological studies.
To improve the validity and comparability of CHD research.

Main Methods:

Utilized data from the Danish Register of Congenital Heart Disease, based on hospital discharge and outpatient diagnoses.
Conducted extensive data cleaning through record review and analysis of discharge coding practices.
Defined patent ductus arteriosus (PDA) and atrial septal defects as CHD only if they remain open 2 months post-birth.

Main Results:

The study highlights the impact of diagnostic criteria on CHD prevalence estimates.
A refined definition, excluding transient findings like PDA in neonates unless persistent, was applied.
Data cleaning and standardized definitions enhance the reliability of epidemiological findings.

Conclusions:

International consensus on CHD definitions is essential for accurate and comparable epidemiological studies.
Standardized definitions improve the utility of CHD registries for research and healthcare planning.
Refined case definitions lead to more precise understanding of CHD prevalence and outcomes.