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Fluid responsiveness in acute circulatory failure.

Ahmed Hasanin1

  • 1Department of Anesthesia and Critical Care Medicine, Cairo University, Giza, Egypt.

Journal of Intensive Care
|November 24, 2015
PubMed
Summary

Accurately assessing fluid responsiveness (FR) in acute circulatory failure is crucial. Dynamic methods and fluid challenge techniques offer advances, but research is needed for wider, easier application in clinical practice.

Keywords:
Acute circulatory failureFluid challengeFluid responsivenessHeart-lung interaction

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Area of Science:

  • Critical Care Medicine
  • Cardiovascular Physiology
  • Hemodynamic Monitoring

Background:

  • Fluid resuscitation is vital in acute circulatory failure, but unnecessary fluid administration must be avoided.
  • Fluid responsiveness (FR) is the left ventricle's ability to increase stroke volume (SV) post-fluid administration.
  • Accurate FR assessment guides fluid therapy, optimizing patient outcomes in critical care settings.

Purpose of the Study:

  • To review recent advancements in detecting fluid responsiveness (FR).
  • To simplify the physiological basis, pros, cons, and cut-off values of various FR assessment methods.
  • To identify current literature gaps and suggest future research directions in FR detection.

Main Methods:

  • Review of static and dynamic methods for assessing fluid responsiveness.
  • Analysis of dynamic parameters like pulse pressure variation (PPV) and stroke volume variation (SVV).
  • Evaluation of fluid challenge techniques, including passive leg raising, mini-fluid challenge, and 10-second fluid challenge.

Main Results:

  • Static methods are generally not recommended for FR assessment.
  • Dynamic methods rely on heart-lung interactions but are limited by spontaneous breathing.
  • Fluid challenge techniques, particularly passive leg raising, overcome dynamic method limitations but require real-time SV monitoring.

Conclusions:

  • Dynamic methods and fluid challenge techniques represent significant advances in FR assessment.
  • Further research should focus on accuracy, ease of implementation, broader applicability, and feasibility for less experienced clinicians.
  • Optimizing FR assessment is essential for appropriate fluid management in patients with circulatory failure.