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Related Concept Videos

Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

277
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...
277
Antihypertensive Drugs: Action of Diuretics01:16

Antihypertensive Drugs: Action of Diuretics

570
Diuretics are antihypertensive drugs used to treat hypertension resulting from sodium and water retention. Sodium, vital for fluid balance and nerve or muscle function, is regulated by the kidneys through millions of nephrons. Blood enters nephrons via afferent arterioles, which branch into capillaries called glomeruli. These filter blood plasma, allowing water and solutes, like sodium ions, to pass through capillary walls into Bowman's capsule. The filtrate then flows through various...
570
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

302
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...
302
Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

398
Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
398
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

259
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,...
259
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.4K
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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Related Experiment Video

Updated: May 9, 2025

Bedside Ultrasound for Guiding Fluid Removal in Patients with Pulmonary Edema: The Reverse-FALLS Protocol
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Volume Optimization Incorporating Negative Pressure Diuresis in Heart Failure (VOID-HF).

Alex M Parker1, Vincent G Bird2, Shweta Bansal3

  • 1From the Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|April 29, 2025
PubMed
Summary
This summary is machine-generated.

The JuxtaFlow Renal Assist Device (RAD) shows early promise in treating diuretic-resistant acute decompensated heart failure. This novel therapy improved urine output and sodium excretion in a small trial, suggesting potential for managing heart failure congestion.

Keywords:
acute kidney injurycardio-renal syndromediureticsheart failurekidney

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Area of Science:

  • Cardiology
  • Nephrology
  • Medical Devices

Background:

  • Acute decompensated heart failure (ADHF) frequently involves diuretic resistance due to cardiorenal syndrome.
  • Managing fluid overload in ADHF patients with diuretic resistance remains a clinical challenge.

Purpose of the Study:

  • To evaluate the safety and feasibility of the JuxtaFlow Renal Assist Device (RAD) for treating congestion in diuretic-resistant ADHF patients.
  • To assess the efficacy of RAD in improving urine output and renal function markers.

Main Methods:

  • An open-label, single-arm trial (VOID-HF) involving seven patients with ADHF and diuretic resistance.
  • RAD catheter system implantation for 24-hour treatment, with primary safety endpoints (hematuria) and secondary efficacy endpoints (urine output, renal biomarkers).

Main Results:

  • Six of seven patients completed the protocol without structural renal abnormalities on ultrasound.
  • Significant improvements in 24-hour urine output and sodium excretion were observed.
  • The RAD system demonstrated early feasibility in this patient cohort.

Conclusions:

  • The JuxtaFlow RAD shows early feasibility for managing congestion in diuretic-resistant ADHF.
  • Further research is warranted to establish the safety and efficacy of RAD as a potential treatment option.