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Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

670
Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

446
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...
446
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...
685
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

2.7K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
2.7K
Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.01:25

Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.

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Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
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Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
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Related Experiment Video

Updated: Jan 9, 2026

Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters
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Measuring Carbon Content in Airway Macrophages Exposed to Carbon-Containing Particulate Matters

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Air Pollution and Exposomic Impacts on Heart Failure.

Lavanya Bellumkonda1, Tasveer Khawaja2, Sadeer Al-Kindi3

  • 1Section of Cardiovascular Medicine, Department of Medicine, Yale School of Medicine, New Haven, CT (L.B.).

Circulation. Heart Failure
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Air pollution significantly drives heart failure development and worsening. This review synthesizes evidence on air pollution

Keywords:
air pollutionenvironmental healthexposomeheart failure

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Area of Science:

  • Environmental Health
  • Cardiovascular Medicine
  • Public Health

Background:

  • Air pollution is a leading global environmental health risk factor for cardiovascular disease.
  • Emerging evidence highlights air pollution's role in heart failure pathogenesis, progression, and prognosis.
  • Air pollution is recognized as part of the exposome, encompassing life-course environmental, social, and behavioral exposures.

Purpose of the Study:

  • To synthesize mechanistic, experimental, clinical, and epidemiological evidence linking air pollution to heart failure.
  • To examine interactions between air pollution and other exposomic factors exacerbating heart failure risk.
  • To propose strategies for risk communication, mitigation, and clinical management of air pollution exposure in heart failure patients.

Main Methods:

  • Review of experimental data on mechanistic links between air pollution and heart failure.
  • Synthesis of experimental, clinical, and epidemiological studies on air pollution exposure and heart failure progression.
  • Analysis of air pollution's interaction with social and environmental exposomic factors.

Main Results:

  • Experimental data demonstrate mechanistic pathways connecting air pollution to heart failure.
  • Both short- and long-term air pollution exposure are linked to increased heart failure progression.
  • Air pollution exacerbates vulnerability, particularly in marginalized populations, through interactions with other exposomic domains.

Conclusions:

  • Air pollution is a critical, modifiable risk factor in heart failure.
  • Understanding exposomic interactions is crucial for addressing health disparities in heart failure.
  • Clinical frameworks are needed for assessing and managing air pollution exposure in heart failure patients to mitigate cardiovascular impact.