G6iii: Techniques / measurements that are available to assess the circulation of a patient in ICU

Clinical

Indices of Fluid Responsiveness

  • CR
  • HR
  • Temperature
  • UO
  • Lactate
  • Mental state
  • LVEDVI
  • GEDVI
  • ITBV

Pressure-Based

Dynamic Indices of Fluid Responsiveness

  • NIBP
  • Invasive BP
  • CVP
  • Fluid Challenge
  • Passive leg raise
  • Pulse pressure variation
  • Stroke volume variation

Flow Based

Circulatory Efficiency

  • Thermodilution
    • R heart catheter (PAC)
    • Transpulmonary (PICC)
  • TTE
  • TOE
  • Continuous oesophageal pulse wave doppler
  • Transcutaneous doppler
  • Lactate
  • Central or mixed venous saturation
  • Oxygen extraction ratio
  • α – A CO2 difference

Microcirculation

  • Gastric tonometry
  • Sublingual tonometry
  • Microdialysis