Table 3.
Univariate analysis of preoperative variables in groups of patients with (n=91) and without (n = 439) TEC during CPB.
| Variablea | TEC (n=91) | Without TEC (n=439) | P-value |
|---|---|---|---|
| Age (years) | 70.4±8.7 | 63.4±9.1 | < 0.001 |
| Women | 48.1 | 11.9 | < 0.001 |
| Body surface area (m2) | 1.7±0.1 | 1.8±0.2 | < 0.001 |
| Body mass index (Kg/m2) | 26.2±4.3 | 27.8±3.8 | 0.001 |
| Diabetes mellitus | 42.9 | 35.5 | 0.187 |
| Arterial hypertension | 93.4 | 80,6 | 0.003 |
| Recent smoking | 31.9 | 51.7 | 0.001 |
| Peripheral vascular disease | 25.3 | 10.5 | < 0.001 |
| Cerebrovascular disease | 16.5 | 7.1 | 0.004 |
| Chronic obstructive pulmonary disease | 3.3 | 3.6 | 0.871 |
| Hematocrit (%) | 34.9±3.4 | 42.2±3.4 | < 0.001 |
| Serum creatinine (mg/dl) | 1.56±0.16 | 0.88±0.04 | 0.034 |
| Glomerular filtration rate (ml/min) | 61.3±21.4 | 86.6±27 | < 0.001 |
| Severe angina (CCS III/IV) | 30.8 | 20.5 | 0.032 |
| Recent AMI (< 30 days) | 31.9 | 18 | 0.003 |
| History of AMI | 59.3 | 48.7 | 0.066 |
| LV dysfunction (EF <40%) | 4.4 | 4.3 | 0.578 |
| Three-vessel disease | 79.1 | 75.2 | 0.823 |
| Non-elective surgery | 5.5 | 3 | 0.225 |
| Reoperation | 1.1 | 0.9 | 0.866 |
a
In cases where the unit of measurement is not refereed, the values are expressed as percentage (%).
AMI=acute myocardial infarction; CCS=Canadian Cardiovascular Society; CPB=cardiopulmonary bypass; EF=ejection fraction; LV=left ventricular; TEC=transfusion of erythrocyte concentrate