Background
Methods
Case sourcing and selection
Collection of variables
Calculation of blood loss
Statistical analysis
Results
Minim | Maximum | Mean | Std-deviation | |
---|---|---|---|---|
Age (Y) | 18 | 80 | 52.86 | 12.38 |
Height (cm) | 1.45 | 1.86 | 1.67 | 0.07 |
Weight (Kg) | 40 | 126 | 66.40 | 11.16 |
BMI index (Kg/m2) | 15.63 | 38.89 | 23.78 | 3.25 |
BL(surgeon) (mL) | 50 | 2800 | 574.35 | 337.81 |
BL(anaesthetist) (mL) | 50 | 2800 | 599.17 | 375.67 |
EBL(intra) (mL) | 75 | 2800 | 586.76 | 346.62 |
PD (mL) | 50 | 2065 | 489.33 | 274.32 |
Units of ABT (U) | 0 | 11 | 1.49 | 1.84 |
Hb(pre) (g/L) | 85 | 188 | 137.74 | 16.79 |
Hct(pre) (%) | 28.7 | 72.4 | 41.23 | 4.57 |
Hb(post) (g/L) | 72 | 164 | 109.2 | 16.14 |
Hct (post) (%) | 21.3 | 46.7 | 32.61 | 4.52 |
Hct Decline(%) | −4.2 | 35.6 | 8.62 | 4.07 |
EBV(mL) | 2625.20 | 6799.80 | 4268.57 | 665.11 |
Length of Post-op Hos Stay (Day) | 3 | 86 | 12.4 | 5.8 |
Frequency | Hct(post) (%) |
P value | Hct decline (%) |
P value | ||
---|---|---|---|---|---|---|
Gender | Male | 375(54.6%) | 34.54 ± 4.32 | <0.001 | 9.20 | <0.001 |
Female | 312(45.4%) | 30.30 ± 3.58 | 7.92 | |||
Smoking | Yes | 189(27.5%) | 34.70 ± 4.21 | <0.001 | 8.85 | .365 |
No | 498(72.5%) | 31.82 ± 4.38 | 8.53 | |||
Alcohol Drinking | Yes | 43(6.3%) | 35.31 ± 4.29 | <0.001 | 8.91 | .631 |
No | 644(93.7%) | 32.43 ± 4.48 | 8.60 | |||
Liver Disease | Yes | 12(1.7%) | 32.28 ± 3.96 | .799 | 8.86 | .837 |
No | 675(98.3%) | 32.62 ± 4.53 | 8.61 | |||
Anaemia | Yes | 32(4.7%) | 27.86 ± 2.46 | <0.001 | 4.95 | <0.001 |
No | 655(95.3%) | 32.85 ± 4.47 | 8.80 | |||
CCI | 0 | 462(67.2%) | 32.88 ± 4.47 | .103 | 8.51 | .684 |
1 | 162(23.6%) | 31.86 ± 4.46 | 8.95 | |||
2 | 53(7.7%) | 32.91 ± 5.08 | 8.49 | |||
3 | 9(1.3%) | 30.88 ± 3.92 | 9.18 | |||
5 | 1(0.1%) | 31.70 | 9.80 | |||
ASA | 1 | 137(19.9%) | 33.42 ± 4.69 | .018 | 8.38 | .217 |
2 | 467(68.0%) | 32.46 ± 4.43 | 8.70 | |||
3 | 79(11.5%) | 31.90 ± 4.55 | 8.73 | |||
4 | 4(0.6%) | 36.70 ± 3.70 | 5.1 | |||
NNIS | 0 | 516(75.1%) | 32.81 ± 4.55 | .096 | 8.40 | .043 |
1 | 162(23.6%) | 31.95 ± 4.38 | 9.44 | |||
2 | 9(1.3%) | 33.19 ± 4.74 | 6.29 | |||
Surgery Segments | 1 | 342(49.8%) | 33.26 ± 4.43 | <0.001 | 7.94 | <0.001 |
2 | 292(42.5%) | 32.16 ± 4.54 | 9.10 | |||
3 | 48(7.0%) | 30.78 ± 4.45 | 10.70 | |||
4 | 5(0.7%) | 32.48 ± 2.65 | 7.04 | |||
Length of ICU Stay | YES | 67(9.8%) | 31.42 ± 4.06 | 0.022 | 8.93 | 0.507 |
NO | 620(90.2%) | 32.74 ± 4.55 | 8.58 | |||
Occurrence of Redo Surgery | YES | 11(1.6%) | 33.36 ± 4.99 | 0.580 | 5.64 | 0.014 |
NO | 676(98.4%) | 32.60 ± 4.52 | 8.67 | |||
Wound Infection | YES | 26(3.8%) | 31.13 ± 4.12 | 0.089 | 8.09 | 0.499 |
NO | 661(96.2%) | 32.67 ± 4.53 | 8.64 |
Post-operative Hct
Hct(post) | Hct decline | Hct(average) | ||||
---|---|---|---|---|---|---|
Correlation |
P value | Correlation |
P value | Correlation |
P value | |
Age | −0.232 | <0.001 | 0.112 | .003 | −0.202 | <0.001 |
BMI Index | 0.130 | .001 | 0.032 | .400 | 0.161 | <0.001 |
EBV(mL) | 0.455 | <0.001 | 0.127 | .001 | 0.569 | <0.001 |
Hct(pre) | 0.600 | <0.001 | 0.457 | <0.001 | 0.896 | <0.001 |
EBL(intra) | −0.219 | <0.001 | 0.224 | <0.001 | −0.131 | .001 |
PD | −0.240 | <0.001 | 0.271 | <0.001 | −0.131 | .001 |
Length of Post-op Hos Stay | −0.106 | .005 | −0.013 | 0.730 | −0.125 | 0.001 |
Unstandardized coefficient | Standardized coefficient | VIF | R square | ||
---|---|---|---|---|---|
Hct (post) | Constant | 11.181 | 0.53 | ||
Hct(pre) | 0.504 | 0.509 | 1.512 | ||
PD | −0.004 | −0.231 | 1.266 | ||
EBV(mL) | 0.001 | 0.213 | 1.484 | ||
EBL(intra) | −0.006 | −0.434 | 2.573 | ||
Units of ABT | 1.016 | 0.414 | 2.683 | ||
Age | −0.035 | −0.096 | 1.126 | ||
Hct Decline | Constant | −13.690 | 0.42 | ||
Hct(pre) | 0.513 | 0.576 | 1.702 | ||
PD | 0.004 | 0.256 | 1.266 | ||
Gender | −1.760 | −0.216 | 1.602 | ||
EBL(intra) | 0.006 | 0.482 | 2.642 | ||
Units of ABT | −0.996 | −0.451 | 2.702 | ||
BMI index | −0.153 | −0.123 | 1.080 | ||
Age | 0.040 | 0.121 | 1.138 |