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Related Experiment Videos

Passive leg raising.

Xavier Monnet1, Jean-Louis Teboul

  • 1Service de réanimation médicale, Hôpital de Bicêtre, AP-HP, 78 rue du Général Leclerc, 94270, Le Kremlin-Bicêtre, France. xavier.monnet@bct.aphp.fr

Intensive Care Medicine
|January 25, 2008
PubMed
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The passive leg raising test reliably predicts fluid responsiveness in critically ill patients. This simple bedside maneuver, when assessed with real-time cardiac output monitoring, is effective even in patients with arrhythmias or spontaneous breathing.

Area of Science:

  • Critical Care Medicine
  • Hemodynamics
  • Diagnostic Tools

Background:

  • Fluid responsiveness is crucial for managing acute circulatory failure.
  • Predicting patient response to fluid administration remains challenging.
  • Non-invasive bedside methods are needed for accurate hemodynamic assessment.

Purpose of the Study:

  • To evaluate the passive leg raising test's efficacy in predicting fluid responsiveness.
  • To determine the reliability of passive leg raising in diverse patient populations.

Main Methods:

  • Nonsystematic literature review.
  • Analysis of studies using passive leg raising as an endogenous fluid challenge.
  • Assessment of hemodynamic changes using real-time blood flow measurements.

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Main Results:

  • Passive leg raising accurately predicts fluid responsiveness in acute circulatory failure.
  • A 10% increase in descending aortic blood flow or 12% in subaortic flow indicates fluid responsiveness.
  • The test remains valuable in patients with arrhythmias or spontaneous breathing.

Conclusions:

  • Passive leg raising is a reliable bedside tool for predicting fluid responsiveness.
  • Real-time cardiac output measurement is essential for accurate interpretation.
  • The test's ease of use and effectiveness suggest increased clinical adoption.