A comparative study of four intensive care outcome prediction models in cardiac surgery patients

Table 1 Summary of variables included in the different postoperative scoring systems

Variables	CASUS	APACHE II	SAPS II	SOFA
Cardiovascular system
Blood pressure	√	√	√	√
Heart rate	√	√	√
CVP	√
Lactate	√
IABP	√
VAD	√
NYHA IV (cardiac)		√
Catecholamines				√
Respiratory system
Oxygenation	√	√	√	√
Respiratory rate		√
COPD		√
Hypoxia		√
Hypercapnia		√
Pulmonary hypertension		√
Patient dependence on respirator		√
Renal system
Creatinine	√	√		√
Urine output			√	√
Dialysis	√	√
Urea			√
Hepatic system
Bilirubin	√		√	√
Cirrhosis		√
Portale hypertension		√
GI bleeding		√
Liver collapse		√
Hepatic encephalopathy		√
Hematological system
Leukocytes		√	√
Platelets	√			√
Hematocrit		√
Central nervous system
GCS		√	√	√
Neurologic state	√
Electrolyte/Metabolic status
Sodium		√	√
Potassium		√	√
Bicarbonate		√	√
Patient data
Age		√	√
Chronical disease
Metastasis/tumor		√	√
Leukemia		√	√
AIDS		√	√
Therapeutic low immunity		√
ICU-admission
Elective surgery		√	√
Internal disease		√	√
Emergency OP		√	√
Others
Temperature		√	√
pH		√

CVP: central venous pressure; IABP: intra-aortic balloon pump; VAD: ventricular assist device; COPD: chronic obstructive pulmonary disease; GI: gastrointestinal; GCS: Glasgow coma scale; AIDS: acquired immunodeficiency disease.

ISSN: 1749-8090