The Evaluation of Risk Factors for Postoperative Infectious Complications after Percutaneous Nephrolithotomy

This study was to evaluate the risk factors of infectious complications after percutaneous nephrolithotomy (PCNL) and build a prediction tool for postoperative complications based on the risk factors. A total of 110 male (67.1%) and 54 female (32.9%) patients who underwent PCNL for renal stones between 2010 and 2014 in our institute were included. A detailed clinical information and laboratory results were obtained from patients. Systemic inflammatory response syndrome (SIRS) and postoperative fever were recorded after PCNL surgery. In all, 45 cases (27.4%) developed SIRS and fever was observed in 20 cases (12.2%). In multivariate analysis, stone size (odds ratio, OR = 1.471, p=0.009) and urine white blood cell (WBC) (OR = 1.001, p=0.007) were related to the development of SIRS. Stone size (OR = 1.644, p=0.024), urine WBC (OR = 1.001, p=0.002) and serum albumin (OR = 0.807, p=0.021) were associated with postoperative fever. We concluded that patients with larger stone size and preoperative urinary tract infection might have a higher risk of developing SIRS and fever after operation, while a high-normal level of serum albumin might be the protective factor for postoperative fever.