Analysis of the recurrence rate and risk factors of renal calculi after intracavitary lithotripsy

Objective  To investigate the incidence and risk factors of recurrence of renal calculi after intracavitary lithotripsy.

Methods  The clinical data of 190 patients with renal stones who underwent endoluminal lithotripsy in our hospital were retrospectively collected. Based on the results of CT, B-ultrasound, or X-ray examination of the urinary system during the 2-year follow-up period, therecurrence of renal calculi was analyzed. Univariate and multivariate Logistic regression were used to analyze the risk factors of stone recurrence.

Results  of 190 patients, 49 patients experienced stone recurrence within 2 years after surgery, with a recurrence rate of 25.79%. Univariate Logistic regression analysis showed that body mass index(BMI), diabetes, smoking, older age and hypertension were protective factors for stone recurrence. Multivariate Logistic regression analysis showed that diabetes and smoking were risk factors for stone recurrence, while age and hypertension were protective factors for stone recurrence.

Conclusion  The recurrence of renal stone after intracavitary lithotripsy is common. Diabetes and smoking are risk factors for the recurrence of renal stone, while older age and hypertension are protective factors.