Table 3.
Median and 95% confidence intervals for the main quantitative parameters used in the suprasystolic occlusion protocol (*p < 0.05)
| Parameter | Test hand | Contralateral hand |
p-value (test vs. contralateral) |
|---|---|---|---|
| Skin blood flow | |||
| Baseline (AU) | 327.3 (217.5; 437.1) | 355.8 (237.8; 473.8) | 0.397 |
| Occlusion (AU) | 18.0 (5.2; 30.8) | 303.5 (194.3; 412.7) | 0.001* |
| Recovery (AU) | 326.8 (219.5; 434.0) | 344.8 (233.2; 456.4) | 0.594 |
| Δ II-I (%) | − 95.3 (− 98.1; − 92.5) | − 15.0 (− 29.6; − 0.4) | 0.001* |
| Δ III-I (%) | − 13.0 (− 27.5; 1.5) | − 6.6 (− 21.5; 8.3) | 0.925 |
| p-value (occlusion vs. baseline) | 0.001* | 0.009* | - |
| p-value (recovery vs. baseline) | 0.158 | 0.084 | - |
| Min (AU) | 3.0 (0.8; 5.2) | 113.8 (63.6; 164.0) | 0.001* |
| t-min (s) | 126.0 (85.7; 166.3) | 50.3 (6.8; 93.8) | 0.331 |
| peak (AU) | 328.0 (201.6; 454.4) | - | - |
| t-peak (s) | 18.0 (13.3; 22.7) | - | - |
| Max (AU) | 467.0 (316.0; 618.0) | - | - |
| t-max (s) | 77.3 (44.8; 109.7) | - | - |
| dV (AU/min) | − 175.5 (− 260.0; − 91.2) | - | - |
| iV (AU/min) | 1390.8 (720.1; 2061.4) | - | - |
| Hemoglobin index | |||
| Baseline (AU) | 0.31 (0.29; 0.34) | - | - |
| Occlusion (AU) | 0.29 (0.26; 0.31) | - | - |
| Recovery (AU) | 0.33 (0.30; 0.36) | - | - |
| Δ II-I (%) | − 8.3 (− 15.1; − 1.5) | - | - |
| Δ III-I (%) | 1.7 (-4.1; 7.4) | - | - |
| p-value (occlusion vs. baseline) | 0.007* | - | |
| p-value (recovery vs. baseline) | 0.177 | - | |
| Min (AU) | 0.24 (0.21; 0.27) | - | - |
| t-min (s) | 174.3 (149.0; 199.5) | - | - |
| Max (AU) | 0.35 (0.32; 0.39) | - | - |
| t-max (s) | 26.4 (15.7; 37.0) | - | - |
| dV (AU/min) | − 0.03 (− 0.04; − 0.02) | - | - |
| iV (AU/min) | 0.22 (0.11; 0.32) | - | - |
| Skin temperature | |||
| Baseline (°C) | 32.8 (31.7; 33.7) | 32.9 (32.0; 33.6) | 0.197 |
| Occlusion (°C) | 32.4 (31.6; 33.1) | 32.6 32.1; 33.2) | 0.004* |
| Recovery (°C) | 32.1 (31.2; 33.0) | 32.6 (32.0; 33.3) | 0.002* |
| Δ II-I (%) | − 1.3 (− 2.5; − 0.1) | − 1.3 (− 2.5; − 0.1) | 0.002* |
| Δ III-I (%) | − 2.1 (− 3.1; − 1.1) | − 0.4 (− 1.5; 0.7) | 0.001* |
| p-value (occlusion vs. baseline) | 0.139 | 0.878 | - |
| p-value (recovery vs. baseline) | 0.004* | 0.284 | - |
| Pulse | |||
| Baseline (min−1) | - | 75.1 (68; 83) | - |
| Occlusion (min−1) | - | 73.3 (64; 82) | - |
| Recovery (min−1) | - | 76.2 (68; 84) | - |
| Δ II-I (%) | - | − 0.9 (− 4.0; 2.0) | - |
| Δ III-I (%) | - | 0.5 (− 2.0; 3.0) | - |
| p-value (occlusion vs. baseline) | - | 0.233 | - |
| p-value (recovery vs. baseline) | - | 0.451 | - |
| Vein width | |||
| Baseline (mm) | 3.7 (3.4; 4.0) | - | - |
| Occlusion (mm) | 4.0 (3.6; 4.4) | - | - |
| Recovery (mm) | 3.9 (3.5; 4.3) | - | - |
| Δ II-I (%) | 10.2 (5.1; 15.3) | - | - |
| Δ III-I (%) | 3.5 (0.4; 6.5) | - | - |
| p-value (occlusion vs. baseline) | 0.003* | - | - |
| p-value (recovery vs. baseline) | 0.746 | - | - |