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Related Experiment Video

Updated: Oct 10, 2025

Bedside Ultrasound for Guiding Fluid Removal in Patients with Pulmonary Edema: The Reverse-FALLS Protocol
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Lung Ultrasound: A "Biomarker" for Fluid Overload?

Jonathan Suarez1, Vandana Dua Niyyar2

  • 1Division of Nephrology, Department of Medicine, Emory University, Atlanta, GA; Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA.

Advances in Chronic Kidney Disease
|December 15, 2021
PubMed
Summary

Lung ultrasound (LUS) aids in assessing fluid overload in kidney disease patients. This review explores LUS utility, limitations, and its role in nephrology for better patient outcomes.

Keywords:
Fluid overloadLung ultrasoundPoint of care ultrasoundPulmonary edemaVolume status

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Area of Science:

  • Nephrology
  • Critical Care Medicine
  • Diagnostic Imaging

Background:

  • Fluid overload correlates with adverse outcomes in acute kidney injury (AKI) and end-stage kidney disease (ESKD).
  • Lung ultrasound (LUS) is increasingly utilized across various medical specialties for assessing pulmonary congestion.

Purpose of the Study:

  • To review the application of LUS in evaluating fluid overload within nephrology.
  • To compare LUS findings with established fluid overload markers.
  • To discuss the limitations and future directions of LUS in nephrology practice.

Main Methods:

  • Literature review of studies utilizing LUS for fluid overload assessment.
  • Comparative analysis of LUS against traditional fluid overload indicators.
  • Discussion of practical implementation challenges and research advancements.

Main Results:

  • LUS can be a valuable tool for detecting pulmonary congestion indicative of fluid overload.
  • LUS findings are not always definitive for pulmonary congestion, requiring careful interpretation.
  • Extensive LUS protocols may present feasibility challenges in routine clinical settings.

Conclusions:

  • LUS shows promise in nephrology for fluid overload assessment, complementing existing methods.
  • Further research is needed to optimize LUS protocols and address its limitations in clinical practice.
  • Integrating LUS into nephrology workflows could improve management of fluid balance in kidney disease patients.