Juan Fulla1,2, Phornphen Prasanchaimontri1,3, Henry C Wright1, Marlie Elia1, Smita De1, Manoj Monga4, Juan Calle5. 1. Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA. 2. Department of Urology, University of Chile, Santa Rosa 1234, Santiago, Chile. 3. Department of Surgery, Ratchaburi Hospital, Ratchaburi, Thailand. 4. Department of Urology, UCSD, San Diego, CA, USA. 5. Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH, USA. callej@ccf.org.
Abstract
INTRODUCTION AND OBJECTIVE: Percutaneous nephrolithotomy (PCNL) is the treatment of choice for patients with large stones. The risk of acute kidney injury (AKI) has not been reported in the Western world. Our objective was to assess the frequency of AKI in patients undergoing PCNL and to identify independent predictors of AKI. METHODS: A retrospective review of PCNL cases performed between January 2014 and June 2019 was reformed. Demographic, laboratory, and intraoperative date were obtained. Perioperative AKI was defined as (1) Increase in serum creatinine by ≥ 0.3 mg/dL (≥ 26.5 micromol/L) within 48 h, or (2) increase in serum creatinine to ≥ 1.5 times baseline. Multivariable logistic regression analysis was performed to determine the factors influencing AKI. A p value of 0.05 was considered significant. RESULTS: A total of 566 patients were included. Mean age was 58 ± 14.4 years. The frequency of AKI was 4.4% (n = 25). The risk factors for AKI after PCNL were having a baseline creatinine > 1.54 mg/dl (p = 0.03, odds ratio [OR] = 2.66, confidence interval [CI] = 1.07-6.6), and a preoperative hemoglobin of less than 10.6 g/dL (p = 0.02, odds ratio [OR] = 2.47, confidence interval [CI] = 1.09-5.5). Patients without AKI had a median hospitalization of 2 days, while those with an AKI were hospitalized for a median of 3 days, and this difference was statistically significant (p < 0.001). CONCLUSIONS: Perioperative AKI occurs in 4.4% of patients undergoing PCNL. Preoperative hemoglobin and serum creatinine can identify those at increased risk, in whom it may be important to avoid nephrotoxic agents.
INTRODUCTION AND OBJECTIVE: Percutaneous nephrolithotomy (PCNL) is the treatment of choice for patients with large stones. The risk of acute kidney injury (AKI) has not been reported in the Western world. Our objective was to assess the frequency of AKI in patients undergoing PCNL and to identify independent predictors of AKI. METHODS: A retrospective review of PCNL cases performed between January 2014 and June 2019 was reformed. Demographic, laboratory, and intraoperative date were obtained. Perioperative AKI was defined as (1) Increase in serum creatinine by ≥ 0.3 mg/dL (≥ 26.5 micromol/L) within 48 h, or (2) increase in serum creatinine to ≥ 1.5 times baseline. Multivariable logistic regression analysis was performed to determine the factors influencing AKI. A p value of 0.05 was considered significant. RESULTS: A total of 566 patients were included. Mean age was 58 ± 14.4 years. The frequency of AKI was 4.4% (n = 25). The risk factors for AKI after PCNL were having a baseline creatinine > 1.54 mg/dl (p = 0.03, odds ratio [OR] = 2.66, confidence interval [CI] = 1.07-6.6), and a preoperative hemoglobin of less than 10.6 g/dL (p = 0.02, odds ratio [OR] = 2.47, confidence interval [CI] = 1.09-5.5). Patients without AKI had a median hospitalization of 2 days, while those with an AKI were hospitalized for a median of 3 days, and this difference was statistically significant (p < 0.001). CONCLUSIONS: Perioperative AKI occurs in 4.4% of patients undergoing PCNL. Preoperative hemoglobin and serum creatinine can identify those at increased risk, in whom it may be important to avoid nephrotoxic agents.
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