Related Experiment Video
Updated: Jun 5, 2026
07:41
Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Complete atrioventricular canal with guarded primum septal defect
Susheel Kumar1, Mary Donofrio, Lowell Frank
1Department of Cardiology, Children's National Medical Center, Washington, DC, USA.
Pediatric Cardiology
|December 29, 2010
Summary
Common atrioventricular canal (CAVC) is a congenital heart defect. This case study details a unique CAVC anatomy in an infant with Down syndrome, offering insights into this complex heart lesion.
Area of Science:
- Cardiology
- Developmental Biology
- Pediatrics
Background:
- Common atrioventricular canal (CAVC) is a congenital heart defect.
- It arises from abnormal development of endocardial cushions in early embryogenesis.
- CAVC presents a spectrum of lesions, from partial to complete atrioventricular (AV) canal defects.
Observation:
- A case of CAVC with unique anatomical features is presented.
- The patient is a 4-month-old male infant.
- The infant also has Down syndrome.
Findings:
- Detailed description of the unique anatomical presentation of CAVC.
- Correlation of CAVC with Down syndrome in this specific case.
- Highlighting the variability in CAVC manifestations.
Implications:
- Enhances understanding of CAVC's anatomical spectrum.
- Provides insights into congenital heart defects in infants with Down syndrome.
- Contributes to the clinical knowledge base for pediatric cardiology and rare heart conditions.
Related Concept Videos
01:16Chambers of the Heart
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.
Deoxygenated blood from the body is received in the right...
Deoxygenated blood from the body is received in the right...
01:27Development of the Heart
The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
01:22Mitral Stenosis I: Introduction
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
01:15Aortic Regurgitation I: Introduction
IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
01:20Mitral Regurgitation I: Introduction
Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...