Presentation Authors: Mariano González, Christian Cristallo*, Federico Tirapegui, Ignacio Tobia Gonzalez, Francisco Daels, Buenos Aires, Argentina
Introduction: Several publications have addressed stone treatment trends, but these reports are lacking in Latin America. The aim of this study is to evaluate urinary lithiasis temporal treatment patterns in a referral institution in Argentina.
Methods: All patients treated (either elective or emergency) because of urinary lithiasis were included from december 1997 to december 2017. Data was collected from surgical programming schedule and confirmed by surgical report. Procedure-related information was categorized annually. Temporal trends were quantified using linear regression analysis and correlation test (R).
Results: A total of 15816 stone related cases were performed in our institution during the study period. Number of procedures/year raised from 591 in 1997 to 799 in 2017. Extracorporeal shock wave lithotripsy (ESWL) percentage relative to total stone procedures decreased from 77,7% to 25,3% with an estimated 2,1% decrease/year (sd 0,2, p 0.0001, R -0.923). In contrast, ureteroscopy (-UL- either flexible or semi rigid) relative frequency increased from 6,6% to 54,1% with an estimated 1,9% increase/year (sd 0.2, p 0,0001, R 0.886). Neither percutaneous nephrolithotripsy nor bladder lithotripsy had correlation with time (R 0.453 and 0.697, respectively). From 2013 ESWL declined 7.1% (sd 0.9) by year meanwhile UL increased 7,4% (sd 1) each year.(Figure 1).
Conclusions: Treatment patterns changed over time with a steady ureteroscopy increase in contrast with permanent ESWL decrease. These trends were incremented in last 5 years.