From: Outcomes in cardiac surgery in 500 consecutive Jehovah's Witness patients: 21 year Experience
Variable | Group A n = 250 | Group B n = 250 | P |
---|---|---|---|
 | 1991-1998 | 1998 - 2012 |  |
Blood Volume (ml) | 5 200 +/- 480 | 5000 +/- 610 | >0.05 |
Preoperative HCT (%) | 41+/-2 | 40+/-4 | <0.001 |
Preoperative erythrocyte mass (ml) | 2215+/- 250 | 2010+/-200 | < 0.05 |
Platelets | 220 ± 60 | 180 ± 50 | < 0 .05 |
Body Mass Index | 25 ± 5 | 24 ± 3 | >0.05 |
Age | 51+/-7 | 68+/-5 | <0.001 |
Female gender | 11 | 28 | <0.001 |
Diabetes | 24 | 31 | >0.05 |
Renal Failure | 10% | 10% | >0.05 |
Euroscore | 4.1 +/- 0.8 | 4.8 +/- 1.3 | <0.05 |
Ejection Fraction | 0.45+/-0.2 | 0.40+/-0.1 | <0.001 |
Aortic Clamp Time | 70+/-15 | 65+/-30 | < 0.05 |
Ischemic Time | 55+/-10 | 48+/-15 | >0.05 |
Blood Loss (ml) | 515 ± 310 | 350 ± 140 | <0.001 |