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Related Concept Videos

Anatomy of the Heart01:27

Anatomy of the Heart

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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

Anatomy of the Heart

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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.
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...
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Overview of the Heart01:07

Overview of the Heart

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The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...
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Conduction System of the Heart01:19

Conduction System of the Heart

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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
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Primary Active Transport01:47

Primary Active Transport

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In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
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Tissue Transplantation01:24

Tissue Transplantation

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Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
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A Modified Method for Heterotopic Mouse Heart Transplantion
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Primary graft dysfunction in heart transplantation.

Eugene C DePasquale1, Abbas Ardehali2

  • 1Division of Cardiology.

Current Opinion in Organ Transplantation
|March 20, 2018
PubMed
Summary
This summary is machine-generated.

Primary graft dysfunction (PGD) after heart transplantation is a significant issue with widely varying reported incidence and mortality. Standardized definitions are needed to improve risk factor identification and optimize management strategies for PGD.

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Area of Science:

  • Cardiology
  • Transplantation Medicine
  • Immunology

Background:

  • Primary graft dysfunction (PGD) is a frequent complication following heart transplantation.
  • Current definitions and diagnostic criteria for PGD lack standardization, leading to variability in reported outcomes.
  • PGD significantly contributes to early post-transplant morbidity and mortality.

Purpose of the Study:

  • To review and synthesize current knowledge on the incidence, classification, risk factors, and management of PGD after heart transplantation.
  • To highlight the inconsistencies in PGD definitions and their impact on research and clinical practice.
  • To emphasize the need for standardized definitions to improve patient care and outcomes.

Main Methods:

  • Literature review of studies reporting on primary graft dysfunction in heart transplantation.
  • Analysis of reported incidence, mortality rates, and classification systems for PGD.
  • Synthesis of data on identified risk factors and current management strategies.

Main Results:

  • The incidence of PGD in heart transplant recipients varies widely, reported between 1.0% and 31%.
  • Mortality rates associated with PGD range from 3% to 75% in the literature.
  • Management strategies for PGD show considerable variation, with a trend towards early intervention.

Conclusions:

  • PGD remains a critical challenge in heart transplantation, associated with substantial mortality and morbidity.
  • A consistent and accessible definition of PGD is essential for accurate risk factor assessment and optimized management.
  • Further research and consensus are required to establish standardized definitions and improve PGD treatment protocols.