Video Experimental Relacionado
Updated: Jun 21, 2026
08:28
Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
Published on: March 10, 2020
Recurrencia de defectos cardíacos congénitos en las familias
Nina Øyen1, Gry Poulsen, Heather A Boyd
1Department of Epidemiology Research, Statens Serum Institut, Copenhagen S, Denmark. noy@ssi.dk
Circulation
|July 15, 2009
Resumen
Las enfermedades cardíacas congénitas (CHD) muestran un fuerte agrupamiento familiar, con riesgos hasta 80 veces más altos en los familiares. Sin embargo, los antecedentes familiares representan solo un pequeño porcentaje de los casos generales de ECC en la población.
Área de la Ciencia:
- Genética cardiovascular Genética cardiovascular Genética cardiovascular Genética cardiovascular Genética cardiovascular
- Cardiología Pediátrica Cardiología pediátrica.
- Salud Pública Genómica de la Salud Pública
Sus antecedentes:
- La contribución familiar a las enfermedades cardíacas congénitas (CHD) no se entiende bien.
- Es crucial estimar el riesgo individual y el impacto en la población de los antecedentes familiares de ECC.
Objetivo del estudio:
- Cuantificar el riesgo individual de ECC en los familiares de las personas afectadas.
- Para determinar el riesgo de enfermedad coronaria atribuible a la población debido a los antecedentes familiares.
Principales métodos:
- Estudio de cohorte nacional de 1.763.591 personas nacidas en Dinamarca (1977-2005).
- Registros daneses vinculados para datos de pacientes, muertes, citogenética y relaciones familiares.
- Clasificación del fenotipo de 18.708 casos de ECC y estimación de los ratios de riesgo de recurrencia y el riesgo atribuible a la población.
Principales resultados:
- Los ratios de riesgo de recurrencia para los familiares de primer grado variaron significativamente según el tipo de ECC, desde 3,4 para el defecto septal ventricular aislado hasta 79,1 para la heterotaxia.
- El riesgo general de recurrencia para el mismo defecto fue de 8.15, y para diferentes defectos fue de 2.68.
- Los antecedentes familiares en parientes de primer grado representaron el 2,2% de los casos de ECC (4,2% excluyendo las aberraciones cromosómicas).
Conclusiones:
- Las enfermedades cardíacas congénitas específicas exhiben un agrupamiento familiar fuerte, pero variable.
- Si bien el riesgo familiar es elevado para ciertas ECC, los antecedentes familiares contribuyen mínimamente a la carga general de la población de ECC.
Videos de Conceptos Relacionados
01:23Rheumatic Heart Disease I: Introduction
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in 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...
01:35Pedigree Analysis
Overview
01:20Imaging Studies for Cardiovascular System III: X-Ray
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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...