Abbreviations, acronyms and symbols
AF	Atrial fibrillation
AKIN	Acute Kidney Injury Network
BMI	Body mass index
CABG	Coronary Artery Bypass Grafting
CAD	Coronary artery disease
CI	Confidence interval
CPB	Cardiopulmonary bypass
FAMERP	Faculdade de Medicina de São José do Rio Preto
HB	Hospital de Base
IAB	Intra-aortic balloon
ICU	Intensive Care Unit
OR	Odds Ratio
P	significance level
ROC	Receiver Operating Characteristics
SIRS	Systemic inflammatory response syndrome
STS	Society of Thoracic Surgeons
SUS	Unified Health System