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Continuous Renal Replacement Therapy01:30

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
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Updated: Nov 13, 2025

Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock
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Closed-Loop Control for Fluid Resuscitation: Recent Advances and Future Challenges.

Behnood Gholami1, Wassim M Haddad2, James M Bailey3

  • 1Autonomous Healthcare, Inc., Hoboken, NJ, United States.

Frontiers in Veterinary Science
|March 12, 2021
PubMed
Summary
This summary is machine-generated.

Closed-loop fluid management systems offer accurate hemodynamic control for patients undergoing surgery or trauma. This technology aims to reduce clinician workload and prevent fluid resuscitation errors.

Keywords:
closed-loop controlfluid managementgoal-directed therapyhemorrhagehypotensionlarge-volume resuscitation

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Area of Science:

  • Critical care medicine
  • Biomedical engineering
  • Anesthesiology

Background:

  • Fluid therapy is crucial for trauma and surgical patients.
  • Interpatient variability and comorbidities complicate fluid management, risking under- or over-resuscitation.
  • Current fluid management relies heavily on clinician workload and monitoring capabilities.

Purpose of the Study:

  • To provide an overview of closed-loop control systems for fluid management.
  • To highlight key steps for translating closed-loop fluid management technology from research to clinical practice.

Main Methods:

  • Review of closed-loop control systems in fluid management.
  • Discussion of challenges and strategies for clinical implementation.

Main Results:

  • Closed-loop systems can enhance accuracy in meeting hemodynamic targets.
  • Potential to decrease clinician workload and improve patient outcomes.
  • Identifies critical steps for technology transfer from bench to bedside.

Conclusions:

  • Closed-loop fluid management presents a promising approach to optimize patient resuscitation.
  • Addressing complexities in fluid therapy through automated systems can improve safety and efficiency.
  • Further research and development are needed for widespread clinical adoption.