Bedside determination of microcirculatory oxygen delivery and uptake

• Verfasst von: Sturm, Timo [VerfasserIn]
• Verfasst von: Leiblein, Julia [VerfasserIn]
• Verfasst von: Clauß, Eberhard [VerfasserIn]
• Verfasst von: Erles, Enno [VerfasserIn]
• Verfasst von: Thiel, Manfred [VerfasserIn]
• Titel: Bedside determination of microcirculatory oxygen delivery and uptake
• Titelzusatz: a prospective observational clinical study for proof of principle
• Verf.angabe: Timo Sturm, Julia Leiblein, Christoph Clauß, Enno Erles & Manfred Thiel
• E-Jahr: 2021
• Jahr: 31 December 2021
• Umfang: 14 S.
• Fussnoten: Gesehen am 18.09.2023
• Titel Quelle: Enthalten in: Scientific reports
• Ort Quelle: [London] : Macmillan Publishers Limited, part of Springer Nature, 2011
• Jahr Quelle: 2021
• Band/Heft Quelle: 11(2021), Artikel-ID 24516, Seite 1-14
• ISSN Quelle: 2045-2322
• DOI: doi:10.1038/s41598-021-03922-4
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Humanities and Social Sciences
• Sach-SW: multidisciplinary
• Sach-SW: Science
• K10plus-PPN: 1859840620
• K10plus-PPN:
  Universitätsbibliothek
• Lokale URL UB: Zum Volltext

Abstract

Assessment of microcirculatory functional capacity is considered to be of prime importance for therapy guidance and outcome prediction in critically ill intensive care patients. Here, we show determination of skin microcirculatory oxygen delivery and consumption rates to be a feasible approach at the patient’s bedside. Real time laser-doppler flowmetry (LDF) and white light spectrophotometry (WLS) were used for assessment of thenar skin microperfusion, regional Hb and postcapillary venous oxygen saturation before and after forearm ischemia. Adapted Fick’s principle equations allowed for calculation of microcirculatory oxygen delivery and uptake. Patient groups with expected different microcirculatory status were compared [control (n = 20), sepsis-1/2 definition criteria identified SIRS (n = 10) and septic shock patients (n = 20), and the latter group further classified according to sepsis-3 definition criteria in sepsis (n = 10) and septic shock (n = 10)], respectively. In otherwise healthy controls, microcirculatory oxygen delivery and uptake approximately doubled after ischemia with maximum values (mDO2max and mVO2max) significantly lower in SIRS or septic patient groups, respectively. Scatter plots of mVO2max and mDO2max values defined a region of unphysiological low values not observed in control but in critically ill patients with the percentage of dots within this region being highest in septic shock patients. LDF and WLS combined with vasoocclusive testing reveals significant differences in microcirculatory oxygen delivery and uptake capacity between control and critically ill patients. As a clinically feasible technique for bedside determination of microcirculatory oxygen delivery and uptake, LDF and WLS combined with vasoocclusive testing holds promise for monitoring of disease progression and/or guidance of therapy at the microcirculatory level to be tested in further clinical trials.