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Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.6K
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...
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Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

1.4K
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.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

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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...
422
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

367
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
367
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

337
β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
337
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

644
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
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Related Experiment Video

Updated: Jun 26, 2025

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test
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Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

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Endothelial Dysfunction in Heart Failure: What Is Its Role?

Andrea Drera1, Luca Rodella1, Elisa Brangi1

  • 1Institute of Cardiology, ASST Spedali Civili di Brescia, Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, 25123 Brescia, Italy.

Journal of Clinical Medicine
|May 11, 2024
PubMed
Summary

Endothelial dysfunction, a pro-inflammatory state, is linked to heart failure (HF) in a two-way relationship. Therapies targeting endothelial dysfunction may offer new treatment options for patients with HF.

Keywords:
endothelial dysfunctionendotheliumheart failureinflammationnitric oxide

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Related Experiment Videos

Last Updated: Jun 26, 2025

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Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
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Area of Science:

  • Cardiovascular Medicine
  • Cell Biology
  • Pathophysiology

Background:

  • The endothelium, a vital cell layer in blood vessels, regulates crucial functions like vascular tone and inflammation.
  • Endothelial dysfunction signifies a shift towards inflammation and thrombosis, potentially impacting heart failure (HF).

Purpose of the Study:

  • To elucidate the pathogenic link between endothelial dysfunction and heart failure (HF).
  • To review potential therapeutic strategies targeting endothelial dysfunction in HF patients.

Main Methods:

  • This review synthesizes existing research on the relationship between endothelial dysfunction and heart failure.
  • It examines evidence from clinical trials and pathophysiological studies.

Main Results:

  • Heart failure with reduced ejection fraction (HFrEF) can induce endothelial dysfunction via neurohormonal activation and oxidative stress.
  • Heart failure with preserved ejection fraction (HFpEF) is associated with endothelial dysfunction due to systemic inflammation.

Conclusions:

  • A bidirectional relationship exists between endothelial dysfunction and heart failure.
  • Targeting endothelial dysfunction presents a promising therapeutic avenue for managing heart failure and cardiovascular diseases.