Table 5.
Logistic regression - backward selection (18 parameters)
| Variable | P -value |
|---|---|
| Anthropometric | |
| Age | 0.7077 |
| Sex | 0.2404 |
| Body surface area | 0.4456 |
| Clinical | |
| Polydistrectual arteriopathy | 0.0025 |
| Coronary artery disease | 0.2651 |
| Valvular disease | 0.8716 |
| Abdominal aortic aneurysm | 0.6594 |
| Carotid artery disease | 0.3624 |
| History of arterial hypertension | 0.0836 |
| Non-insulin dependent diabetes mellitus | 0.1804 |
| Chronic renal failure | 0.7213 |
| Chronic obstructive pulmonary disease | 0.0082 |
| Left ventricle ejection fraction | 0.4889 |
| Heart rate (beats/minute) | 0.5753 |
| Core temperature | 0.1233 |
| Pharmacologic | |
| Sedation | 0.0078 |
| Norepinephrine infusion | 0.1142 |
| Technical | |
| Catheter diameter (18- or 20-gauage) | <0.0001 |