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Related Concept Videos

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
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...
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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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Antihypertensive Drugs: Angiotensin II Receptor Blockers

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Related Experiment Video

Updated: Jul 2, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

WITHDRAWN: Left atrial function and arterial hypertension.

S Del Colle1, A Milan, S De Castro

  • 11Division of Internal Medicine and Hypertension, Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy.

Journal of Human Hypertension
|August 15, 2008
PubMed
Summary
This summary is machine-generated.

Left atrial enlargement, a marker of cardiac disease, is linked to diastolic dysfunction and hypertension. Its volume predicts prognosis, but its role in risk stratification requires further study.

Related Experiment Videos

Last Updated: Jul 2, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

Area of Science:

  • Cardiology
  • Cardiac Physiology
  • Hypertension Research

Background:

  • Left atrial enlargement is common in cardiac diseases.
  • Ventricular diastolic function and left ventricular remodeling (e.g., in hypertension) significantly influence left atrial size.
  • Left atrial volumetric changes are implicated in hypertensive damage.

Purpose of the Study:

  • To explore the relationship between left atrial volume and cardiac conditions.
  • To investigate the role of diastolic function and left ventricular remodeling in left atrial size.
  • To assess the prognostic value and evolving role of left atrial volume in risk stratification.

Main Methods:

  • Review of existing literature on left atrial dimensions and function.
  • Discussion of invasive and non-invasive techniques for assessing atrial dimensions and function.
  • Analysis of the association between left atrial enlargement and clinical outcomes.

Main Results:

  • Left atrial volume may reflect long-term diastolic function modifications.
  • Left ventricular remodeling in hypertension contributes to atrial volume changes.
  • Left atrial enlargement is associated with adverse prognosis, potentially independent of ventricular function.

Conclusions:

  • Left atrial function impairment results from hypertensive alterations.
  • Left atrial volume is a significant prognostic marker in various clinical settings.
  • Further research is needed on the natural history, therapeutic modifiability, and outcome impact of left atrial remodeling.