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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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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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Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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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...
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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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Intrarenal Venous Flow Pattern Changes Do Relate With Renal Function Alterations in Acute Heart Failure.

Rafael de la Espriella1, Gonzalo Núñez-Marín1, Marta Cobo2

  • 1Department of Cardiology, Hospital Clínico Universitario de Valencia (INCLIVA), Valencia, Spain.

JACC. Heart Failure
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PubMed
Summary

Discontinuous intrarenal venous flow (IRVF) predicts worsening renal function in acute heart failure, but decongestion can mitigate this risk. Patients with both issues face higher adverse event rates.

Keywords:
acute heart failureintrarenal venous flowrenal congestionrenal function trajectory

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Area of Science:

  • Nephrology
  • Cardiology
  • Medical Imaging

Background:

  • Limited evidence exists on the clinical significance of intrarenal venous flow (IRVF) patterns in acute heart failure (AHF).
  • Understanding IRVF may offer insights into renal function changes during AHF management.

Purpose of the Study:

  • To assess the association between IRVF patterns and the likelihood of worsening renal function (WRF).
  • To analyze longitudinal serum creatinine (sCr) changes relative to IRVF and decongestion.
  • To explore the link between IRVF/WRF categories and patient outcomes.

Main Methods:

  • Prospective, multicenter study involving 188 participants.
  • IRVF assessed at baseline, 72 hours, and 30/90 days postdischarge.
  • Linear mixed-effects models and univariable/multivariable analyses used to evaluate associations.

Main Results:

  • Discontinuous IRVF correlated with higher odds of WRF and increased sCr levels.
  • Diuretic response and decongestion significantly impacted the magnitude of sCr changes.
  • Combined WRF and discontinuous IRVF at 30 days predicted a 5.96-fold increased hazard of adverse events.

Conclusions:

  • Discontinuous IRVF is an early indicator of WRF in AHF patients.
  • Effective decongestion can potentially modify the association between IRVF and WRF.
  • Identifying patients with both WRF and discontinuous IRVF is crucial for predicting adverse outcomes.