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Chambers of the Heart

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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
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Coronary Circulation

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The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
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Related Experiment Video

Updated: Jul 6, 2026

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

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

Published on: May 2, 2025

Fontan operation and the single ventricle.

Jamil A AboulHosn¹, David M Shavelle, Yelba Castellon

¹Ahmanson-UCLA Adult Congenital Heart Disease Center, Los Angeles, CA, USA. JAboulhosn@mednet.ucla.edu

Congenital Heart Disease

|April 2, 2008

Summary

The Fontan operation has evolved significantly since 1971. This case study reviews 40 years of interventions for single ventricle patients, highlighting the Fontan procedure and cardiac CT angiography for complex circulation evaluation.

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Last Updated: Jul 6, 2026

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

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Published on: May 2, 2025

Use of Two Intracorporeal Ventricular Assist Devices As a Total Artificial Heart

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Published on: May 11, 2018

Area of Science:

Cardiology
Pediatric Cardiac Surgery
Medical Imaging

Background:

The Fontan operation, first described in 1971, is a palliative surgical procedure for complex single-ventricle congenital heart defects.
Over four decades, the Fontan operation has undergone numerous modifications and improvements to enhance patient outcomes.

Observation:

This study details the comprehensive medical, surgical, and percutaneous interventions for a single ventricle patient over 40 years.
The evolution of the Fontan procedure, including its indications, sequelae, and complications, is traced through this patient's case.

Findings:

Cardiac computed tomography with angiography (CCTA) is presented as a valuable noninvasive tool for assessing the intricate Fontan circulation.
The case illustrates the long-term management challenges and the importance of advanced imaging in Fontan patients.

Implications:

Understanding the historical development and long-term sequelae of the Fontan operation is crucial for managing complex congenital heart disease.
Noninvasive imaging modalities like CCTA play a vital role in the surveillance and management of patients with Fontan physiology.