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Related Concept Videos

Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

Mitral 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...
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...
Mitral Stenosis I: Introduction01:22

Mitral 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...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy 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...
Mitral Regurgitation I: Introduction01:20

Mitral 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...

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Related Experiment Video

Updated: Jun 20, 2026

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension
10:03

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension

Published on: June 27, 2025

Identifying left ventricular dysfunction in pulmonary hypertension.

Navin Rajagopalan1, Marc A Simon, Kathy Edelman

  • 1Cardiovascular Institute, University of Pittsburgh Medical Center, PA 15213-2582, USA. rajagopalann@upmc.edu

Congestive Heart Failure (Greenwich, Conn.)
|September 16, 2009
PubMed
Summary
This summary is machine-generated.

Left ventricular (LV) dysfunction is common in pulmonary hypertension (PH). The study found that LV myocardial performance index (MPI) effectively quantifies this dysfunction and correlates with key hemodynamic variables in PH patients.

More Related Videos

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
07:11

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Published on: October 28, 2020

Related Experiment Videos

Last Updated: Jun 20, 2026

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension
10:03

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension

Published on: June 27, 2025

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
07:11

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Published on: October 28, 2020

Area of Science:

  • Cardiology
  • Pulmonary Medicine
  • Echocardiography

Background:

  • Left ventricular (LV) dysfunction significance in pulmonary hypertension (PH) is not well understood.
  • Assessing LV function in PH patients is crucial for understanding disease severity and prognosis.

Purpose of the Study:

  • To quantify LV function in PH patients using LV myocardial performance index (MPI).
  • To correlate LV MPI with invasively determined hemodynamic variables in PH.

Main Methods:

  • Prospective measurement of LV MPI via transthoracic echocardiography in 50 PH patients.
  • Simultaneous right heart catheterization for hemodynamic assessment.
  • Comparison with 15 healthy controls.

Main Results:

  • LV MPI was significantly higher in PH patients (0.62±0.27) than controls (0.36±0.08), indicating worse LV dysfunction.
  • LV MPI correlated significantly with mean pulmonary artery pressure (r=0.50), pulmonary vascular resistance (r=0.57), and cardiac index (r=-0.64).
  • LV MPI >0.75 predicted low cardiac index with high sensitivity (89%) and specificity (78%).

Conclusions:

  • PH patients exhibit abnormal LV function, as indicated by elevated LV MPI.
  • LV MPI is a valuable, non-invasive tool for assessing LV dysfunction in PH.
  • LV MPI correlates with key hemodynamic parameters, aiding in risk stratification.