Efficacy of retrograde intrarenal surgery combined with stone drainage ureteral stent in the treatment of>2 cm renal or upper ureteral calculi
Objective To investigate the efficacy of retrograde intrarenal surgery(RIRS)combined with stone drainage ureteral stent in the treatment of renal or upper ureteral calculi larger than 2 cm in diameter.Methods The datas of 70 pa-tients with renal or upper ureteral calculi larger than 2 cm in diameter diagnosed in Mindong Hospital Affiliated to Fujian Medical University from June 2021 to June 2022 were analyzed retrospectively.All patients were treated by RIRS.And the patients were divided into a experimental group and a control group based on the type of ureteral stent used after surgery.There were 30 patients in experimental group who were placed in stone drainage ureteral stent and there were 40 patients in control group who were placed in traditional double J stent.The operation time,blood white blood cell count and urine white blood cell count of the two groups were collected,and the ureteral-related symptoms questionnaire was filled in when the two groups returned to the hospital for extubation 4 weeks after the operation.The situation of lithotriptic discharge and postop-erative complications during urination during ureteral stent indwelling was compared between the two groups Results There were no statistically significant differences between the experimental group and the control group in terms of gender,age,stone location,stone size,stone CT value,preoperative blood leukocytes and urine leukocytes(P>0.05).There were no sta-tistically significant differences between the two groups in terms of operation time,postoperative blood leukocytes,postoper-ative urine leukocytes,voiding symptoms scores,physical pain symptom s scores,general health status scores and work ability impact scores(P>0.05).The patients'ability of promoted stone excretion in the experimental group was stronger than that in the control group,with statistically significant difference(P<0.05).4 weeks after surgery,the residual stone rate in the experimental group was lower than that in the control group,with statistically significant difference(P<0.05).However,there were no statistically significant differences between the two groups in terms of infection fever,stone street formation,migrationt,encrustation,flank pain and hematuria(P>0.05).Conclusion The combination of RIRS and stone drainage ureteral stent in treatment of>2 cm renal or upper ureteral calculi could improve patients'ability to expel stones,reduce the residual stone rates,and do not increase adverse reactions.