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Updated: Oct 26, 2025

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

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Coronary Artery Fistula: Association between Pathway Patterns, Clinical Features and Congenital Heart Disease

Daniel L Cobo1, Fernando Batigalia1, Ulisses A Croti1

  • 1Faculdade de Medicina de São Jose do Rio Preto, São José do Rio Preto, SP - Brasil.

Arquivos Brasileiros De Cardiologia
|July 28, 2021
PubMed

Insights

Coronary artery fistula (CAF) in children is uncommon, often linked to congenital heart disease and symptoms like dyspnea. Echocardiography reveals common pathways to the right heart, aiding diagnosis.

Area of Science:

  • Pediatric Cardiology
  • Medical Imaging
  • Congenital Heart Disease

Background:

  • Coronary artery fistula (CAF) is a direct connection between coronary arteries and cardiac chambers or vessels.
  • CAF can be associated with congenital heart disease.

Purpose of the Study:

  • To map coronary artery fistula pathways using echocardiography.
  • To correlate these pathways with clinical symptoms and congenital heart disease in children.

Main Methods:

  • Analysis of 7,183 pediatric cardiac disease records.
  • Color Doppler echocardiography and Spearman's Correlation test were employed.
  • 3D software modeling was used for pathway visualization.

Main Results:

  • 26 children (0.0036%) had CAF, with common pathways from RCA, LCA, and AIVB to the right ventricle.
  • Dyspnea and cyanosis were present in over 50% of patients.
  • Congenital heart disease, particularly IVC and IAC, was found in 96.15% of patients.

Conclusions:

  • CAF is an uncommon entity presenting with dyspnea and cyanosis.
  • It is frequently associated with congenital heart disease, especially IVC and IAC.
  • Echocardiography effectively visualizes CAF pathways, predominantly to the right heart chambers.
Abstract

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