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Related Concept Videos

Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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Cognitive Development During Adulthood01:30

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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
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Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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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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Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

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Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
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Atrial myopathy subtypes: Association with and prediction of incident atrial fibrillation-The atherosclerosis risk in communities study (ARIC).

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Related Experiment Video

Updated: Mar 1, 2026

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
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Left ventricular remodeling and diastolic dysfunction predict cognitive decline in older adults.

Arshama Dehghan1, Fernando R Giugni1, Katja Vu Bartholdy2

  • 1Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|February 28, 2026
PubMed
Summary

Cardiac changes like left ventricular remodeling and diastolic dysfunction are linked to faster cognitive decline over 10 years. These heart conditions, particularly reduced ejection fraction, significantly impact executive function and memory.

Keywords:
Atherosclerosis Risk in Communities Neurocognitive Studycardiac remodelingcognitioncognitive declinediastolic functionechocardiographyexecutive functionlanguageleft atrial strainleft ventricular masslongitudinal cohortmemoryolder adults

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Area of Science:

  • Cardiology
  • Neurology
  • Gerontology

Background:

  • Longitudinal associations between cardiac structure/function and cognitive changes remain unclear.
  • Investigating subclinical cardiac abnormalities and their impact on cognitive trajectories is crucial for aging populations.

Purpose of the Study:

  • To examine the relationship between cardiac structure and function with longitudinal cognitive changes.
  • To identify specific cardiac parameters associated with cognitive decline in older adults.

Main Methods:

  • Utilized data from 4957 Atherosclerosis Risk in Communities study participants (mean age 75).
  • Assessed cardiac structure and function via echocardiography and cognitive function over 10 years.
  • Employed multivariable linear mixed models to analyze associations.

Main Results:

  • Increased left ventricular mass index, higher left atrial volume index, and reduced left atrial reservoir strain correlated with greater global cognitive decline, especially in executive function.
  • Lower ejection fraction and e' velocity were associated with accelerated memory decline.

Conclusions:

  • Subclinical left ventricular remodeling and diastolic dysfunction are linked to accelerated cognitive decline over a decade in late life.
  • These cardiac abnormalities, particularly impaired ejection fraction, drive cognitive decline, affecting executive function and memory.