CRP and Renal insufficiency: Univariate analysis for potential risk factors associated with in-hospital mortality revealed age (p = 0.01), ASA score (p = 0.024), hypertension (p = 0.017), preoperative CRP count (p = 0.003), renal failure (p < 0.001), immunosuppression (p < 0.001), emergency surgery (p < 0.001), and emergency surgery under immunosuppression (p < 0.001) as significant parameters.