Risk Factors for Systemic Inflammatory Response Syndrome in Patients with Negative Preoperative Urine Culture after Percutaneous Nephrolithotomy

PLR, CRP, stone size, and hemoglobin drop can predict SIRS after PCNL. This finding may help classify risk in patients before PCNL, especially in those with a sterile urine culture. Key Words: C-reactive protein, Percutaneous nephrolithotomy, Platelet/lymphocyte ratio, Systemic inflammatory response syndrome.