Table 2 Blood Pressure and Coefficient of Variation of patients stratified by mortality and renal failurea
Exposure measures | Entire Cohort (n = 3687) | Survivors (n = 3588) | Non-Survivors (n = 99) | P Value | No Renal Failure (n = 3582) | Renal Failure (n = 105) | P Value |
|---|---|---|---|---|---|---|---|
Blood Pressureb | |||||||
Systolic Blood Pressure | 106 (102, 111) | 106 (102, 111) | 102 (97, 109) | 0.0002* | 106 (102, 111) | 103 (97, 109) | 0.001* |
Pre-Bypass | 111 (105, 118) | 111.5 (105, 118) | 110 (101, 117) | 0.045 | 111.5 (105, 118) | 110 (103, 116) | 0.046 |
Post-Bypass | 100 (95, 105) | 100 (95, 105) | 97 (88, 103) | 0.0002* | 100 (95, 105) | 96 (91, 104) | 0.001* |
Mean Arterial Pressure | 70 (67, 73) | 70 (67, 73) | 66 (62, 71) | < 0.0001* | 70 (67, 73) | 65 (62, 69) | < 0.0001* |
Pre-Bypass | 78 (73, 83) | 78 (73, 83) | 75 (67, 80) | < 0.0001* | 78 (73, 83) | 75 (66, 80) | < 0.0001* |
Bypass | 57 (53, 62) | 57 (53, 62) | 58 (51, 64) | 0.97 | 57 (53, 62) | 57 (53, 63) | 0.92 |
Post-Bypass | 70 (66, 74) | 70 (66, 74) | 66 (62, 71) | < 0.0001* | 70 (66, 74) | 65 (61, 69.5) | < 0.0001* |
Coefficient of Variationb | |||||||
Systolic Blood Pressure | 0.21 (0.19, 0.25) | 0.21 (0.19, 0.24) | 0.24 (0.21, 0.27) | < 0.0001* | 0.21 (0.19, 0.24) | 0.23 (0.21, 0.27) | < 0.0001* |
Pre-Bypass | 0.20 (0.17, 0.23) | 0.20 (0.17, 0.23) | 0.20 (0.17, 0.25) | 0.16 | 0.20 (0.17, 0.23) | 0.21 (0.18, 0.25) | 0.03* |
Post-Bypass | 0.18 (0.15, 0.22) | 0.18 (0.15, 0.22) | 0.21 (0.17, 0.24) | < 0.0001* | 0.18 (0.15, 0.22) | 0.20 (0.17, 0.25) | 0.001* |
Mean Arterial Pressure | 0.29 (0.25, 0.37) | 0.29 (0.25, 0.37) | 0.31 (0.25, 0.39) | 0.26 | 0.29 (0.25, 0.37) | 0.30 (0.24, 0.38) | 0.54 |
Pre-Bypass | 0.27 (0.22, 0.38) | 0.27 (0.22, 0.38) | 0.27 (0.22, 0.42) | 0.50 | 0.27 (0.22, 0.38) | 0.28 (0.23, 0.40) | 0.46 |
Bypass | 0.15 (0.13, 0.18) | 0.15 (0.13, 0.18) | 0.15 (0.12, 0.21) | 0.82 | 0.15 (0.13, 0.18) | 0.15 (0.12, 0.20) | 0.98 |
Post-Bypass | 0.22 (0.17, 0.27) | 0.22 (0.17, 0.27) | 0.24 (0.19, 0.29) | 0.02* | 0.22 (0.17, 0.27) | 0.23 (0.19, 0.28) | 0.10 |