CRP and systemic inflammatory response syndrome: No significant differences in age, sex, peritoneal irritation sign, preoperative SIRS, causes of SBO, CRP, K, CK, LDH, blood gas analysis (pH, PaO2, PaCO2, HCO3-, and lactic acid), or CT findings (ascites, closed loop, whirl sign, and mesenteric edema) were observed between the two groups.