Assessment of oxygenation with polarized light spectroscopy enables new means for detecting vascular events in the skinShow others and affiliations
2020 (English)In: Microvascular Research, ISSN 0026-2862, E-ISSN 1095-9319, Vol. 130, article id 104000Article in journal (Refereed) Published
Abstract [en]
Introduction: Impaired oxygenation in the skin may occur in disease states and after reconstructive surgery. We used tissue viability imaging (TiVi) to measure changes in oxygenation and deoxygenation of haemoglobin in an in vitro model and in the dermal microcirculation of healthy individuals. Materials and methods: Oxygenation was measured in human whole blood with different levels of oxygenation. In healthy subjects, changes in red blood cell concentration (C-RBC,(TiVi)), oxygenation (Delta C-OH,(TiVi)) and deoxygenation (Delta C-DOH,(TiVi)) of haemoglobin were measured during and after arterial and venous occlusion using TiVi and were compared with measurements from the enhanced perfusion and oxygen saturation system (EPOS). Results: During arterial occlusion, C-RBC,(TiVi) remained unchanged while Delta C-OH,(TiVi) decreased to -44.2 (10.4) AU (p = 0.04), as compared to baseline. After release, C-RBC,C-TiVi increased to 39.2 (18.8) AU (p < 0.001), Delta C-OH,C-TiVi increased to 38.5. During venous occlusion, C-RBC,C-TiVi increased to 28.9 (11.2) AU (p < 0.001), Delta C-OH,C-TiVi decreased to -52.2 (46.1) AU (p < 0.001) compared to baseline after 5 min of venous occlusion. There was a significant correlation between the TiVi Oxygen Mapper and EPOS, for arterial (r = 0.92, p < 0.001) and venous occlusion (r = 0.87, p < 0.001), respectively. Conclusion: This study shows that TiVi can measure trends in oxygenation and deoxygenation of haemoglobin during arterial and venous stasis in healthy individuals.
Place, publisher, year, edition, pages
ACADEMIC PRESS INC ELSEVIER SCIENCE , 2020. Vol. 130, article id 104000
Keywords [en]
Tissue viability imaging; Red blood cell concentration; Oxygenation; Saturation; Enhanced perfusion and oxygen saturation (EPOS); Post-occlusive hyperaemia
National Category
Anesthesiology and Intensive Care
Identifiers
URN: urn:nbn:se:liu:diva-166462DOI: 10.1016/j.mvr.2020.104000ISI: 000536777500002PubMedID: 32194082OAI: oai:DiVA.org:liu-166462DiVA, id: diva2:1444153
Note
Funding Agencies|Council of Ostergotland County, Sweden; Swedish Governmental Agency for Innovation Systems (VINNOVA)Vinnova [2015-0153]
2020-06-202020-06-202024-01-10