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Related Concept Videos

Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

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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...
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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...
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Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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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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Heart Failure I: Introduction01:27

Heart Failure I: Introduction

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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 VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

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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.
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Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

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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...
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Related Experiment Video

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Author Spotlight: Investigating HR-Dependent Cardiac Function in Mouse Models Through a Novel Atrial-Pacing Approach
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Diuretic Resistance in Heart Failure.

Richa Gupta1, Jeffrey Testani2, Sean Collins3

  • 1Department of Cardiovascular Medicine, Vanderbilt University Medical Center, 1121 Medical Center Dr., Nashville, TN, 37212, USA.

Current Heart Failure Reports
|February 15, 2019
PubMed
Summary

Diuretic resistance (DR) in acute heart failure (AHF) is common and impacts patient outcomes. Understanding DR mechanisms and using urine sodium can help tailor treatments for better results.

Keywords:
Acute heart failureBiomarkersDiuretic resistanceLoop diureticsSpot urine sodium

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Area of Science:

  • Cardiology
  • Nephrology
  • Pharmacology

Background:

  • Diuretic resistance (DR) is a significant factor in acute heart failure (AHF) exacerbations.
  • Mechanisms of DR in AHF are not fully understood, despite impaired diuretic pharmacokinetics in chronic heart failure.

Purpose of the Study:

  • To review the mechanisms of DR, focusing on loop diuretics.
  • To summarize literature on the prognostic value of diuretic efficiency.
  • To identify predictors of natriuretic response in AHF.

Main Methods:

  • Review of current literature on diuretic resistance in acute heart failure.
  • Focus on loop diuretic mechanisms and pharmacokinetics.
  • Analysis of studies on diuretic efficiency and natriuretic response predictors.

Main Results:

  • DR can develop within a single dose of loop diuretics in AHF.
  • Nephron-level resistance may be more critical than delivery defects.
  • Urine sodium concentration is a functional measure of diuretic response.

Conclusions:

  • Identifying patients with DR offers opportunities for tailored, aggressive therapy.
  • Further research into DR mechanisms in AHF is needed to guide biomarkers and future trials.