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Related Concept Videos

Chambers of the Heart01:16

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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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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The azygos system is a crucial part of the body's circulatory system and drains most of the thorax. It comprises the azygos, hemiazygos, and accessory hemiazygos veins.
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Overview of Systemic Veins01:11

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Systemic veins are crucial blood vessels that return deoxygenated blood from various body tissues back to the heart. There are three systemic veins that return deoxygenated blood to the heart, they are as follows.
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Anatomy of the Heart01:27

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The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
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Anatomy of the Heart01:20

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The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
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Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
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Cor triatriatum sinister.

Alexander Kadner1, Katharina Meszaros2, Christoph Mueller2

  • 1Department of Cardiovascular Surgery, University Hospital Berne, Berne, Switzerland alexander.kadner@insel.ch.

Multimedia Manual of Cardiothoracic Surgery : MMCTS
|June 1, 2014
PubMed
Summary
This summary is machine-generated.

Cor triatriatum sinister, a rare congenital heart defect, can mimic mitral stenosis. Surgical resection of the dividing membrane successfully restored pulmonary venous flow in a pediatric patient.

Keywords:
Congenital cardiac surgeryCor triatriatumLeft heart lesionsPulmonary hypertensionPulmonary veins

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Area of Science:

  • Cardiology
  • Pediatric Cardiology
  • Congenital Heart Disease

Background:

  • Cor triatriatum sinister is a rare congenital cardiac anomaly characterized by a fibromuscular membrane dividing the left atrium.
  • It is frequently associated with other complex congenital heart malformations.
  • Limited case reports exist, highlighting the rarity and diagnostic challenges.

Observation:

  • A 6-year-old boy presented with symptoms suggestive of mitral valve stenosis and congestive heart failure.
  • Diagnostic evaluation revealed the presence of cor triatriatum sinister.
  • The patient's clinical presentation mimicked severe left-sided obstructive lesions.

Findings:

  • Surgical correction was performed using a left atrial approach.
  • A fibromuscular membrane separating the pulmonary venous confluence from the mitral valve was completely resected.
  • Postoperative echocardiography confirmed unobstructed pulmonary venous flow and successful relief of the obstruction.

Implications:

  • This case underscores the importance of considering cor triatriatum sinister in pediatric patients with unexplained heart failure or mitral stenosis-like symptoms.
  • Surgical intervention via a left atrial approach is an effective treatment for cor triatriatum sinister.
  • Complete resection of the anomalous membrane can lead to excellent long-term outcomes.