Cardiothoracic & vascular anaesthesia
Assessment of Microcirculation and Microcirculatory Function During Cardiopulmonary Bypass Using Hyperspectral Imaging and a Vascular Occlusion Test: An Observational Pilot Study
Authors' conclusion
HSI-based VOT detected microcirculatory alterations after CPB-preserved superficial oxygenation amplitude with blunted deeper perfusion and delayed reactive hyperemia-that static HSI parameters alone did not capture.
Study context
- Population
- Adults undergoing elective cardiac surgery with cardiopulmonary bypass (CPB)25 analysed
- Participants
- 29 adults
- Exposure
- Microcirculation by hyperspectral imaging (HSI) with vascular occlusion test (VOT) before induction (T0), after induction (T1) and after skin closure (T2)
- Outcome
- Perioperative cutaneous microcirculation and microvascular reactivity (HSI with VOT)
Methodological detailsmonocentric, hypothesis-generating, Single-centre university hospital
- Monocentric
- Hypothesis-generating
- Single-centre university hospital
Main finding
As reported in the abstract
Correlation of StO₂ at T2 with norepinephrine equivalents (r)
−0.43
Correlation of StO₂ at T2 with lactate (r)
−0.61
Correlation of StO₂ at T2 with procalcitonin (r)
−0.67
Correlation of StO₂ at T2 with CPB time (r)
−0.65
Observational data: associations, not effects.
Further findings
- 3 patients requiring mechanical circulatory support showed lower HSI values and worse outcomes
Original publication
Assessment of Microcirculation and Microcirculatory Function During Cardiopulmonary Bypass Using Hyperspectral Imaging and a Vascular Occlusion Test: An Observational Pilot Study. J Cardiothorac Vasc Anesth. Published 25 August 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →