Vasoactive Medications and the Microcirculation in Septic Shock: A Scoping Review.
Shyama Sathianathan1, Saloni Sachar2, Jana Berro2
1Department of Pulmonary Critical Care Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH.
Critical Care Medicine
|January 13, 2026
Summary
Vasoactive medications show varied effects on septic shock microcirculation. Current research highlights a disconnect between overall blood flow and microvascular perfusion, necessitating standardized studies for better patient outcomes.
Area of Science:
- Critical Care Medicine
- Pharmacology
- Hemodynamics
Background:
- Septic shock management increasingly focuses on perfusion-guided care.
- Understanding vasoactive medication effects on microcirculation is crucial for optimizing resuscitation strategies.
Purpose of the Study:
- To synthesize current evidence on vasoactive agents' impact on microvascular perfusion in septic shock.
- To identify knowledge gaps in this research area.
Main Methods:
- Comprehensive literature search of major databases (MEDLINE, Embase, Cochrane).
- Inclusion of adult septic shock patients receiving vasoactive therapy with microcirculatory measurements.
- Data extraction on study design, patient demographics, medications, and perfusion metrics.
Main Results:
- Thirty-three studies analyzed various vasoactive drugs and microcirculation techniques.
- Early patient enrollment (within 24 hours) correlated with more pronounced microcirculatory changes.
- Global hemodynamics and microvascular perfusion showed discordance in 61% of cases.
- Norepinephrine, vasopressin, terlipressin, and levosimendan demonstrated context-dependent microcirculatory improvements.
- Dobutamine may improve perfusion, but further research is needed.
Conclusions:
- Significant challenges persist in understanding how vasoactive agents influence microcirculation in septic shock.
- Standardized research protocols and point-of-care monitoring are essential for advancing outcome-driven resuscitation.
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