ObjectiveTo explore the risk factors and their prevention measures of ureteral injury in ureteroscopic holmium laser lithotripsy. MethodsThe data of 589 patients treated with uretero-scopic holmium laser lithotripsy were collected and divided into injury group (n=26) and uninjured group (n=563) according to the presence of intraoperative ureteral injury. The clinical data of the two groups were compared and analyzed. ResultsThere were no statistically significant differences in age, gender, course of disease, location of calculi, severity of hydronephrosis, or complication of diabetes mellitus between the two groups (P＞0.05); statistically significant differences were observed between the two groups in indicators such as calculus diameter, calculus incarceration rate, rate of complication of ureteral polyp, CT value of calculus, rate of absence of preoperative preset catheter, and predilation time (P＜0.05). There was statistically significant difference in operation duration between the two groups (P＜0.05). Logistic regression analysis showed that calculus diameter, CT value of calculus, calculus incarceration, complication of ureteral polyp, absence of preoperative preset catheter, and predilation time were risk factors for developing ureteral injury during lithotripsy. ConclusionExcessively greater calculus diameter, high CT value of calculus, calculus incarceration, complication of ureteral polyp, absence of preoperative preset catheter, and excessively shorter predilation time are risk factors for developing ureteral injury during ureteroscopic lithotripsy, and attention should be paid to these patients in clinical practice.

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