Objectives: To assess the prediction of sto-ne clearance of percutaneous nephrolithotomy using the ‘CROES’ nephrolithometric score, and analyze complications of using modified Clavi-en classification system.
Materials and Methods: A total of 220 operated patients were included in the study. Overall patient characteristics, stone localiza-tion, stone burden, prior stone surgery, urine analysis, blood loss, operative duration, posto-perative JJ stent and/or nephrostomy tube, sto-ne-free status, and complications were analyzed. Data from each patient were scored with CRO-ES nomogram, and the predicted stone-free rate of patients was determined. The efficacy of CROES nomogram was evaluated by comparing our results with standard CROES nomogram. Results: The average age of our patients with the mean body mass index of 26.7±3.3 kg/m2 was 45.8±15.2, and the number of our male patients was higher (60% vs 40%). 36.8% of our patients had of previous stone surgery history. Staghorn stone rate was found 12.7%, the average stone area was 452.8±213.4 mm2, and multiple stones in the same kidney was 57.3%. Our stone-free rate was found as 78.2%, and estimated chan-ce of stone free rate was 80% according to the CROES score. The difference between estimated rate and our real success was only 1.8%.
Conclusions: CROES nomogram has been considered as a simple and easy way for predic-tion of SF rate prior PNL. to reach more reli-able outcomes, a greater number of randomized controlled trials are needed. However, it may still deserve to be use in the daily practice beca-use it gives an idea for success after PNL. Even though this study is a retrospective setting, our results may help to guide for clinicians..
Key words: CROES nomogram, Percutane-ous nephrolithotomy, Scoring system
Abstract
Objectives: To assess the prediction of sto-ne clearance of percutaneous nephrolithotomy using the ‘CROES’ nephrolithometric score, and analyze complications of using modified Clavi-en classification system.
Materials and Methods: A total of 220 operated patients were included in the study. Overall patient characteristics, stone localiza-tion, stone burden, prior stone surgery, urine analysis, blood loss, operative duration, posto-perative JJ stent and/or nephrostomy tube, sto-ne-free status, and complications were analyzed. Data from each patient were scored with CRO-ES nomogram, and the predicted stone-free rate of patients was determined. The efficacy of CROES nomogram was evaluated by comparing our results with standard CROES nomogram. Results: The average age of our patients with the mean body mass index of 26.7±3.3 kg/m2 was 45.8±15.2, and the number of our male patients was higher (60% vs 40%). 36.8% of our patients had of previous stone surgery history. Staghorn stone rate was found 12.7%, the average stone area was 452.8±213.4 mm2, and multiple stones in the same kidney was 57.3%. Our stone-free rate was found as 78.2%, and estimated chan-ce of stone free rate was 80% according to the CROES score. The difference between estimated rate and our real success was only 1.8%.
Conclusions: CROES nomogram has been considered as a simple and easy way for predic-tion of SF rate prior PNL. to reach more reli-able outcomes, a greater number of randomized controlled trials are needed. However, it may still deserve to be use in the daily practice beca-use it gives an idea for success after PNL. Even though this study is a retrospective setting, our results may help to guide for clinicians..
Key words: CROES nomogram, Percutane-ous nephrolithotomy, Scoring system