Abstract

Background: Same-session bilateral ureteroscopy may reduce the number of surgeries for stone removal but can lead to higher overall complication rates. We aimed to compare same-session bilateral ureteroscopy with unilateral ureteroscopy in terms of perioperative outcomes. Methods: We used the GeRmAn Nationwide inpatient Data (GRAND), provided by the Research Data Center of the Federal Bureau of Statistics (2005-2021). We assessed, through multiple patient-level analyses, severe perioperative complications, mortality, length of hospital stay, hospital revenues, intensive care unit admission, and the evolution of ureteroscopy during the last years in Germany. Results: We included 833,609 patients undergoing either same-session bilateral (n = 6914, 0.8%) or unilateral (n = 826,695, 99.2%) ureteroscopy for stone management. Patients undergoing bilateral ureteroscopy presented worse baseline characteristics. After adjusting for these characteristics, same-session bilateral ureteroscopy, compared to unilateral ureteroscopy, was significantly associated with higher odds of postoperative sepsis (odds ratio [OR]: 2.4, 95% confidence interval [CI]: 2-2.8, p < 0.001), myocardial infarction (OR: 2, 95% CI: 1.03-3.5, p = 0.024), acute kidney disease (OR: 2.8, 95% CI: 2.5-3.2, p < 0.001), transfusion (OR: 4.2, 95% CI: 3.6-4.8, p < 0.001), urinary tract infection (OR: 1.6, 95% CI: 1.5-1.7, p < 0.001), intensive care unit admission (OR: 1.9, 95% CI: 1.6-2.3, p < 0.001), and mortality (OR: 3.1, 95% CI: 2.1-4.5, p < 0.001). Similarly, the length of hospital stay was longer, and the in-hospital costs were higher (p < 0.001) after same-session bilateral ureteroscopy. Interestingly, the annual cases of ureteroscopy have undergone about a threefold increase in the last 17 years. Conclusions: The present real-world data demonstrate that same-session bilateral ureteroscopy leads to higher rates of perioperative myocardial infarction, acute kidney disease, transfusion, urinary tract infections, sepsis, and intensive care unit admission, as well as to increased length of hospital stay, costs, and inpatient mortality compared to unilateral ureteroscopy.

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