Data collection
The demographic characteristics and laboratory data were collected by
reviewing patients’ medical records. Echocardiography was performed on
admission and left atrial diameter (LAD), left ventricular ejection
fraction (LVEF) were obtained. Demographic characteristics included
gender, age, race, height, weight, body mass index (BMI), smoking
status, drinking, heart rate on admission and underlying disease.
Peripheral blood samples were obtained by vacutainer tubes at the time
of admission, after at least 12 hours of fasting. The following
hematological parameters were measured using
automated hematology analyzing
devices: white blood cell count (WBC), red blood cell count (RBC),
hemoglobin (Hb), platelet count (PLT), differential white blood cell
count (neutrophils, monocytes,
lymphocytes, eosinophils and basophiles).
Glucose, alanine aminotransferase
(ALT), aspartic transaminase (AST),
albumin, serum creatinine (Cr),
uric acid (UA), blood urea nitrogen (BUN), total cholesterol (TC),
triglyceride (TG), low-density lipoprotein (LDL), high-density
lipoprotein (HDL), estimated glomerular filtration rate (eGFR), D-dimer,
C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) were
also evaluated. Neutrophils, platelet count and lymphocytes were
expressed as ×109 cells/L. The SII was measured as
neutrophil count × platelet count/lymphocyte count.