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Related Concept Videos

Chambers of the Heart01:16

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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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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...
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Mitral Stenosis I: Introduction01:22

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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...
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Physiology of the Heart: The Cardiac Cycle01:18

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The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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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.
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Related Experiment Video

Updated: Oct 6, 2025

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
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The RVEIO and RV function: More, please.

Bruce J Kimura1, Christina M Mansour1

  • 1Department of Medicine, Scripps Mercy Hospital, San Diego, California, USA.

Journal of Clinical Ultrasound : JCU
|January 19, 2022
PubMed
Summary
This summary is machine-generated.

Early evidence for the value of Right Ventricular Ejection Index (RVEIO) is limited by patient population biases. Further research is necessary to confirm the importance of this index.

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Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • The Right Ventricular Ejection Index (RVEIO) is an emerging metric.
  • Assessing right ventricular function is crucial in cardiovascular disease management.

Purpose of the Study:

  • To evaluate the current evidence supporting the clinical utility of RVEIO.
  • To identify limitations in the existing data regarding RVEIO.

Main Methods:

  • Review of existing literature on RVEIO.
  • Analysis of studies reporting RVEIO values across different patient cohorts.

Main Results:

  • Current data demonstrating RVEIO's value is restricted.
  • Acquisition biases in specific patient populations limit generalizability.

Conclusions:

  • The potential significance of RVEIO requires further investigation.
  • Additional research is needed to overcome population-specific biases and validate RVEIO.