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Related Concept Videos

Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

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Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
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Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

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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,...
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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...
1.9K
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

626
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
626
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

632
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
632
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

1.2K
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...
1.2K

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Related Experiment Video

Updated: May 3, 2026

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
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Vagal stimulation in heart failure.

Gaetano M De Ferrari1

  • 1Department of Cardiology, Fondazione IRCCS Policlinico San Matteo, Viale Golgi, 19, 27100, Pavia, Italy, g.deferrari@smatteo.pv.it.

Journal of Cardiovascular Translational Research
|February 7, 2014
PubMed
Summary

Vagal stimulation may improve heart failure (HF) outcomes. A pilot study showed chronic vagal stimulation was safe and improved quality of life, exercise capacity, and heart function in HF patients.

Area of Science:

  • Cardiology
  • Autonomic Nervous System Research
  • Medical Device Innovation

Background:

  • Heart failure (HF) is linked to autonomic imbalance, with heightened sympathetic and reduced vagal activity.
  • Vagal stimulation has demonstrated antiarrhythmic effects and improved cardiac function in experimental HF models.

Purpose of the Study:

  • To assess the safety and tolerability of chronic vagal stimulation in patients with chronic heart failure.
  • To evaluate the impact of vagal stimulation on subjective and objective measures in HF patients.

Main Methods:

  • An open-label pilot clinical study involving 32 patients with chronic heart failure.
  • Chronic vagal stimulation was administered, and outcomes were assessed through quality of life questionnaires, the 6-minute walk test, and cardiac imaging.

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Main Results:

  • Chronic vagal stimulation was found to be safe and well-tolerated in the study population.
  • Patients reported improved quality of life and enhanced exercise capacity (6-minute walk test).
  • Objective improvements included reduced left ventricular systolic volumes and a better left ventricular ejection fraction.

Conclusions:

  • Chronic vagal stimulation shows promise as a therapeutic approach for heart failure.
  • Further investigation in larger clinical trials, including a phase III trial, is warranted to confirm these findings and establish the clinical role of vagal stimulation in HF management.