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Videos de Conceptos Relacionados

Anatomy of the Heart01:27

Anatomy of the Heart

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.
Heart Valves01:16

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Anatomy of the Heart01:20

Anatomy of the Heart

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.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...

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Video Experimental Relacionado

Updated: Jul 18, 2026

A Modified Method for Heterotopic Mouse Heart Transplantion
11:29

A Modified Method for Heterotopic Mouse Heart Transplantion

Published on: June 23, 2014

El corazón que falla en el corazón.

J A Towbin1, N E Bowles

  • 1Department of Pediatrics (Cardiology), Baylor College of Medicine, Houston, Texas 77030, USA. jtowbin@bcm.tmc.edu

Nature
|January 24, 2002
PubMed
Resumen

Las cardiomiopatías, trastornos del músculo cardíaco que causan insuficiencia cardíaca, se comprenden cada vez más a través de los avances genéticos. Este conocimiento mejora el diagnóstico y allana el camino para nuevas terapias para esta condición común.

Área de la Ciencia:

  • Cardiología Cardiología.
  • Genética La genética.
  • Biología Molecular Biología Molecular

Sus antecedentes:

  • Las cardiomiopatías son trastornos del músculo cardíaco que conducen a la insuficiencia cardíaca.
  • Representan una causa significativa de mortalidad, particularmente en los Estados Unidos.
  • La investigación reciente se ha centrado en los fundamentos moleculares de estas condiciones.

Objetivo del estudio:

  • Para resaltar los avances recientes en la comprensión de las cardiomiopatías.
  • Hacer hincapié en los avances en el conocimiento con respecto a la base genética de las cardiomiopatías.
  • Discutir las implicaciones para las estrategias de diagnóstico y el desarrollo terapéutico.

Principales métodos:

  • Revisión de la literatura científica reciente sobre las cardiomiopatías.

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A High-Fidelity Porcine Model of Orthotopic Heart Transplantation Following Donation after Circulatory Death
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  • Análisis de los hallazgos de la investigación molecular y genética.
  • Síntesis de información sobre los avances diagnósticos y terapéuticos.

    • Principales resultados:

    • Se han logrado avances significativos en el esclarecimiento de los mecanismos moleculares de las cardiomiopatías.
    • La investigación genética ha proporcionado conocimientos sustanciales sobre la etiología de estas afecciones cardíacas.
    • Estos avances son cruciales para desarrollar mejores herramientas de diagnóstico.

    Conclusiones:

    • La comprensión de la base genética de las cardiomiopatías está transformando la práctica clínica.
    • Están surgiendo nuevas estrategias de diagnóstico basadas en hallazgos moleculares y genéticos.
    • La investigación sienta las bases para el desarrollo de terapias dirigidas para las cardiomiopatías.