Clinical Scorecard: Assessing Peripheral Tissue Perfusion and Fluid Responsiveness through Passive Leg Raising and Microvascular Skin Blood Flow
At a Glance
Category
Detail
Condition
Sepsis-associated peripheral tissue hypoperfusion
Key Mechanisms
Fluid resuscitation guided by fluid responsiveness assessed via passive leg raising and microvascular skin blood flow monitoring
Target Population
Adult septic patients requiring fluid expansion in ICU
Care Setting
Intensive Care Unit (ICU) in tertiary teaching hospital
Key Highlights
Peripheral tissue hypoperfusion in sepsis correlates with organ failure and poor outcomes.
Passive leg raising (PLR) is a reversible fluid challenge that predicts cardiac output response without fluid administration.
Skin blood flow (SBF) monitoring via laser Doppler provides real-time, non-invasive assessment of microcirculatory perfusion.
Guideline-Based Recommendations
Diagnosis
Assess fluid responsiveness using dynamic tests such as passive leg raising to personalize fluid therapy.
Use microcirculatory assessment tools like skin blood flow monitoring to complement macrohemodynamic parameters.
Management
Administer fluid resuscitation based on fluid responsiveness to avoid under-resuscitation or fluid overload.
Perform PLR by lowering the upper body from 45° semi-recumbent to supine and raising lower limbs to 45°.
Monitoring & Follow-up
Monitor macro-hemodynamic variables including mean arterial pressure, heart rate, cardiac output, and vasopressor dosage.
Measure tissue perfusion markers such as capillary refill time and fingertip skin blood flow at defined time points.
Maintain stable ICU room temperature and avoid therapeutic changes between measurements to ensure accuracy.
Risks
Avoid PLR testing in patients with lower limb amputation, suspected intra-abdominal hypertension, or compression stockings.
Exclude patients with severe agitation or Raynaud’s disease that may impair reliable skin blood flow measurement.
Patient & Prescribing Data
Adult ICU patients with sepsis undergoing fluid expansion
Fluid responsiveness defined as >15% increase in skin blood flow after volume expansion; PLR-induced changes in skin blood flow predict microvascular fluid responsiveness.
Clinical Best Practices
Standardize skin blood flow measurement using laser Doppler on the palmar surface of the index finger opposite to arterial line or cuff.
Perform measurements at four sequential time points: baseline, after 1 min PLR, return to baseline, and post-volume expansion.
Use a 500 mL saline infusion over 15 minutes for volume expansion following PLR assessment.
Measure capillary refill time and skin blood flow on contralateral sides to avoid interference.
Ensure intra-observer reproducibility by performing repeated measurements in a subset of patients.
by Alexandra Morin, Tomas Urbina, Juliette Bernier, Lisa Raia, Vincent Bonny, Louai Missri, Jean-Luc Baudel, Pierre-Yves Boelle, Eric Maury, Jérémie Joffre, Hafid Ait-Oufella
