Table 2 Univariate and multivariable analyses for pre- and intraoperative factors associated with peak blood lactate value
From: Hyperlactatemia during cardiopulmonary bypass: determinants and impact on postoperative outcome
Univariate analysis (correlation matrix) | ||
|---|---|---|
Factor | Correlation coefficient | p value |
Age (years) | -0.099 | 0.032 |
Ejection fraction | -0.181 | 0.001 |
Congestive heart failure | 0.191 | 0.001 |
Preoperative serum creatinine value (mg/dl) | 0.191 | 0.001 |
Active endocarditis | 0.177 | 0.001 |
Isolated coronary operation | -0.094 | 0.041 |
CPB duration (minutes) | 0.523 | 0.001 |
Lowest temperature (°C) on CPB | -0.312 | 0.001 |
Lowest hematocrit on CPB | -0.158 | 0.001 |
Lowest pump flow (l/minute per m2) on CPB | -0.271 | 0.001 |
Lowest Do2 (ml/minute per m2) on CPB | -0.276 | 0.001 |
Peak blood glucose (mg/dl) on CPB | 0.517 | 0.001 |
Multivariable analysis (linear regression) | ||
Factor | B coefficient | p value |
Constant | 0.326 | |
Preoperative serum creatinine value (mg/dl) | 0.123 | 0.032 |
Active endocarditis | 0.177 | 0.001 |
CPB duration (minutes) | 0.012 | 0.001 |
Lowest Do2 (ml/minute per m2) on CPB | -0.004 | 0.004 |
Peak blood glucose (mg/dl) on CPB | 0.009 | 0.001 |