Table 4 Near-infrared spectroscopy and sidestream dark field variables
From: Effects of changes in arterial pressure on organ perfusion during septic shock
65 mm Hg | 75 mm Hg | 85 mm Hg | 65 mm Hg | |
|---|---|---|---|---|
NIRS variables | ||||
StO2 baseline, percentage | 82.5 (79.0-85.9) | 81.0 (77.0-85.0) | 81.2 (77.6-84.7) | 77.8 (73.6-82.1) |
Descending slope, percentage/minute | −14.8 (−18.0 - −11.6) | −14.5 (−18.9 - −10.0) | −16.4 (−22.0 - −10.9) | −15.7 (−21.9 - −9.4) |
nirVO2I, arbitrary units | 139 (114-165) | 122 (98-146) | 153 (109-196) | 129 (93-165) |
Delta StO2, percentage | 7.4 (5.3-9.5) | 8.4 (5.2-11.6) | 7.7 (5.4-9.9) | 7.4 (5-9.7) |
AUC ratio, percentage | 0.11 (0.05-0.16) | 0.12 (0.09-0.15) | 0.10 (0.08-0.14) | 0.10 (0.07-0.15) |
Ascending slope, percentage/minute | 111 (80-141) | 172 (115-228)a | 177 (122-232)a | 114 (94-134) |
SDF variables | ||||
Total vessel density | 12.8 (10.5-15.0) | 13.2 (11.1-15.3) | 14.3 (12.9-15.7) | 13.7 (11.0-16.4) |
Small vessel density | 10.7 (8.5-12.9) | 11 (8.5-13.4) | 11.6 (10.1-13.1) | 11.7 (9.0-14.3) |
PVD, vessels/mm | 11.0 (8.6-13.3) | 12.0 (9.4-14.5) | 13.2 (11.9-14.5)a | 12.1 (9.2-14.9) |
Small PVD, vessels/mm | 9.1 (6.4-11.9) | 9.8 (6.9-12.8) | 10.7 (9.0-12.3) | 10.3 (7.1-13.5) |
All PPV, percentage | 85.9 (80.1-91.6) | 89.5 (83.7-95.2) | 92.6 (89.9-95.3) | 87.7 (79.9-95.6) |
Large PPV, percentage | 95.5 (93.6-97.4) | 95.4 (88.8-102.0) | 97.5 (95.2-99.7) | 89.8 (82.7-96.9) |
Small PPV, percentage | 83.6 (76.1-91.0) | 87.9 (81.8-94.0) | 91.1 (87.9-94.3) | 86.4 (76.3-96.5) |
Microvascular flow index | 2.4 (2.2-2.7) | 2.7 (2.4-2.9) | 2.9 (2.8-2.9)a | 2.5 (2.2-2.9) |