Risk Factors for Upper Urinary Tract Stone Recurrence: A Retrospective Study of 247 Patients.

BACKGROUND Urolithiasis, as a common disease in urology, has high incidence and recurrence rates. Although there are various treatments and most patients can receive minimally invasive treatment such as ureteroscopic lithotripsy, the high recurrence rate still carries a large disease burden. To explore the potential risk factors, we conducted this retrospective study to evaluate laboratory and demographic factors associated with recurrence of upper urinary tract stones within 3 years in 247 patients. MATERIAL AND METHODS We performed a retrospective analysis of 247 patients who underwent surgical treatment for upper urinary tract stones at Shanghai Tenth People's Hospital from June 2019 to December 2021, among whom 133 patients had at least 1 recurrence within 3 years. Basic information, medical history, blood test results, and urine test results were collected to explore the association of the risk factors with recurrence of upper urinary tract stones. Patients were assigned to either the recurrence group or the n-recurrence group. We analyzed the baseline levels of the 2 groups, and multivariate logistic regression was performed to assess potential risk factors. RESULTS Variables with P value less than 0.05 in single-factor analysis were included in the multifactor analysis. In multivariate logistic regression, the results showed that C-reactive protein-albumin-lymphocyte index and serum creatinine level are risk factors of recurrence of upper urinary tract stones (P<0.05). CONCLUSIONS Patients who underwent surgery for upper urinary tract stones for the first time who had a low C-reactive protein albumin lymphocyte (CALLY) index and high serum creatinine level were at higher risk of recurrence at least once within 3 years.