SMN1 and chronic kidney disease: An age over 60 years old, history of chronic renal insufficiency, ASA > 3, initial WBC > 10 × 103/dl, neutrophil count > 12* 103/dL, creatinine > 92 μmol/dl, urea > 6.2 mmol/L, D-dimer > 2.6 mg/L and more than one segmentation of SMA involved were associated with an increased risk of death.