Beyond shear stress: septic microvascular failure remains a multifactorial phenomenon
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By
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Damiani Elisa
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Domizi Roberta
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Carsetti Andrea
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Antolini Riccardo
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Adrario Erica
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Donati Abele
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July 6, 2026
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Clinical Scorecard: Septic Microvascular Dysfunction: A Complex Condition Beyond Shear Stress Factors
At a Glance
| Category | Detail |
|---|
| Condition | Septic Microvascular Dysfunction |
| Key Mechanisms | Global vasodilation, limited cardiac output, altered endothelial mechanotransduction, glycocalyx dysfunction. |
| Target Population | Patients with septic shock. |
| Care Setting | Critical care settings. |
Key Highlights
- Microvascular failure in septic shock is influenced by multiple interacting variables.
- Altered glycocalyx contributes to increased microvascular permeability and leukocyte-endothelium interactions.
- Current data do not support a uniform microcirculatory response to vasoactive agents.
Guideline-Based Recommendations
Diagnosis
- Assess microvascular function using sublingual videomicroscopy.
Management
- Caution in interpreting therapeutic implications of shear stress models.
Monitoring & Follow-up
- Monitor for microvascular rarefaction and glycocalyx shedding in septic patients.
Risks
- Inconsistent microvascular blood flow response to vasoactive therapies.
Patient & Prescribing Data
Patients experiencing septic shock.
Vasoactive therapies may not yield consistent improvements in microvascular blood flow.
Clinical Best Practices
- Utilize quantitative microcirculatory datasets to evaluate treatment responses.
- Consider patient-specific factors when administering vasoactive agents.
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