Table 2 Vascular occlusion test parameters by the use of cardiopulmonary bypass
From: Microvascular reactivity and clinical outcomes in cardiac surgery
Total patients | Total patients | Patients undergoing CPB | Patients not undergoing CPB | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
(n = 232) | (n = 232) | (n = 144) | (n = 88) | |||||||||
Patients undergoing CPB | Patients not undergoing CPB | P value | Patients with composite complications | Patients without composite complications | P value | Patients with composite complications | Patients without composite complications | P value | Patients with composite complications | Patients without composite complications | P value | |
(n = 144) | (n = 88) | (n = 81) | (n = 151) | (n = 69) | (n = 75) | (n = 12) | (n = 76) | |||||
Before induction | ||||||||||||
Baseline tissue oxygen saturation, % | 83.3 (6.2) | 84.0 (5.8) | 0.425 | 83.8 (5.9) | 83.5 (6.2) | 0.683 | 84.2 (5.8) | 82.5 (6.6) | 0.139 | 82.6 (6.3) | 84.3 (5.7) | 0.266 |
Occlusion slope, %/min | −9.8 (3.9) | −10.3 (5.2) | 0.402 | −10.1 (5.1) | −10.0 (4.2) | 0.941 | −9.9 (4.1) | −9.8 (3.8) | 0.825 | −10.7 (7.9) | −10.3 (4.5) | 0.778 |
Recovery slope, %/s | 4.3 (1.6) | 4.7 (1.5) | 0.096 | 4.3 (1.7) | 4.5 (1.5) | 0.356 | 4.3 (1.8) | 4.3 (1.4) | 0.972 | 4.4 (1.6) | 4.7 (1.5) | 0.416 |
At the end of surgery | ||||||||||||
Baseline tissue oxygen saturation, % | 77.1 (8.1) | 77.6 (7.1) | 0.631 | 79.0 (8.0) | 76.4 (7.4) | 0.061 | 78.9 (8.3) | 75.5 (7.7) | 0.021 | 79.3 (7.1) | 77.2 (7.1) | 0.261 |
Occlusion slope, %/min | −9.9 (2.6) | −9.3 (2.9) | 0.103 | −9.7 (2.6) | −9.6 (2.8) | 0.771 | −9.7 (2.3) | −10.1 (2.8) | 0.484 | −9.7 (3.6) | −9.2 (2.8) | 0.551 |
Recovery slope, %/s | 3.1 (1.5) | 3.4 (1.3) | 0.114 | 3.0 (1.6) | 3.4 (1.4) | 0.067 | 2.8 (1.6) | 3.4 (1.5) | 0.061 | 3.6 (1.4) | 3.4 (1.4) | 0.692 |
Postoperative day 1 | ||||||||||||
Baseline tissue oxygen saturation, % | 85.4 (7.7) | 86.5 (6.6) | 0.319 | 86.5 (6.6) | 85.7 (7.5) | 0.513 | 86.5 (7.3) | 84.3 (8.1) | 0.229 | 86.5 (4.4) | 86.5 (7.0) | 0.991 |
Occlusion slope, %/min | −9.0 (2.9) | −10.1 (6.8) | 0.175 | −8.5 (2.7) | −10.1 (6.0) | 0.066 | −8.3 (2.8) | −9.6 (2.9) | 0.036 | −8.9 (2.6) | −10.4 (7.4) | 0.482 |
Recovery slope, %/s | 3.6 (1.7) | 3.7 (1.4) | 0.723 | 3.1 (1.6) | 4.0 (1.5) | 0.001 | 2.9 (1.7) | 4.2 (1.6) | <0.001 | 3.4 (1.6) | 3.8 (1.4) | 0.373 |