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Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
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Related Experiment Video

Updated: May 11, 2026

Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring
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Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring

Published on: May 2, 2025

Evolution in experimental Fontan circulation: a review.

Meletios Kanakis1, Achilleas Lioulias, Georgios Samanidis

  • 1Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece.

Annals of Thoracic and Cardiovascular Surgery : Official Journal of the Association of Thoracic and Cardiovascular Surgeons of Asia
|May 24, 2013
PubMed
Summary

This review details the experimental Fontan operation (FO) evolution, highlighting challenges in creating animal models. Computational fluid dynamics (CFD) aids in understanding FO hemodynamics and improving the procedure.

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Related Experiment Videos

Last Updated: May 11, 2026

Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring
06:29

Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring

Published on: May 2, 2025

Quantifying Inferior Vena Cava Compliance and Distensibility in an In Vivo Ovine Model Using 3D Angiography
07:53

Quantifying Inferior Vena Cava Compliance and Distensibility in an In Vivo Ovine Model Using 3D Angiography

Published on: April 26, 2024

Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Biomedical Engineering

Background:

  • The Fontan procedure is a surgical treatment for complex single-ventricle congenital heart defects.
  • Experimental right heart bypass operations have significantly influenced the development of the Fontan procedure.
  • Understanding the historical evolution and experimental progress of the Fontan operation is crucial for further advancements.

Purpose of the Study:

  • To review the evolution and progress of the experimental Fontan operation (FO).
  • To discuss current challenges and questions related to the experimental FO.
  • To highlight the role of computational fluid dynamics (CFD) in understanding and improving the FO.

Main Methods:

  • Systematic review of English literature on experimental Fontan operations.
  • Analysis of data on the establishment of Fontan circulation in experimental animal models.
  • Investigation of hemodynamic characteristics using Computational Fluid Dynamics (CFD).

Main Results:

  • Establishing a chronic experimental model for Fontan circulation remains extremely difficult.
  • CFD has been instrumental in analyzing FO hemodynamics and guiding procedural design.
  • CFD has also been used to assess the performance of assisted Fontan circulation.

Conclusions:

  • The experimental Fontan operation has a complex evolutionary path.
  • Significant challenges persist in developing reliable experimental models.
  • Continued integration of experimental findings, clinical practice, and interdisciplinary collaboration is essential for future progress in Fontan circulation.