Risk factors of concurrent urinary sepsis in patients with diabetes mellitus comorbid with upper urinary tract calculi

BACKGROUND Urinary sepsis is frequently seen in patients with diabetes mellitus(DM)complicated with upper urinary tract calculi(UUTCs).Currently,the known risk factors of urinary sepsis are not uniform.AIM To analyze the risk factors of concurrent urinary sepsis in patients with DM complicated with UUTCs by logistic regression.METHODS We retrospectively analyzed 384 patients with DM complicated with UUTCs treated in People’s Hospital of Jincheng between February 2018 and May 2022.The patients were screened according to the inclusion and exclusion criteria,and 204 patients were enrolled.The patients were assigned to an occurrence group(n=78)and a nonoccurrence group(n=126).Logistic regression was adopted to analyze the risk factors for urinary sepsis,and a risk prediction model was established.RESULTS Gender,age,history of lumbago and abdominal pain,operation time,urine leukocytes(U-LEU)and urine glucose(U-GLU)were independent risk factors for patients with concurrent urinary sepsis(P<0.05).Risk score=0.794×gender+0.941×age+0.901×history of lumbago and abdominal pain-1.071×operation time+1.972×U-LEU+1.541×U-GLU.The occurrence group had notably higher risk scores than the nonoccurrence group(P<0.0001).The area under the curve of risk score for forecasting concurrent urinary sepsis in patients was 0.801,with specificity of 73.07%,sensitivity of 79.36%and Youden index of 52.44%.CONCLUSION Sex,age,history of lumbar and abdominal pain,operation time,ULEU and UGLU are independent risk factors for urogenic sepsis in diabetic patients with UUTC.

Selection of staged or synchronous percutaneous nephrolithotomy for treatment of bilateral upper urinary tract calculi

Objective To evaluate the decision process to perform staged or synchronous bilateral percutaneous nephrolithotripsy ( PCNL) in the treatment of bilateral upper urinary tract calculi. Methods Patients with an indication for bilateral PCNL were enrolled in the study

COMPARISON OF TWO-STEP DILATION VERSUS STEP BY STEP DILATION IN MINIMAL PERCUTANEOUS NEPHROLITHOTOMY

Objective To investigate minimizing dilation times of percutaneous nephrolithotomy （PCNL） in treating large renal stones. Methods A total of 105 consecutive patients undergoing minimal PCNL by using the two-step dilation protocol （ Group I ） and step by step dilation protocol （ Group 1I ） were reviewed. Two groups were compared in terms of stone size, dilating time, operation time, and blood loss. Results In all patients, the dilating of channel was finished and the success rate was 100%. The stone-free rate was 88. 7% （47/53） in Group [ and84.6% （44/52） in Group O . There were significant differences in the time of dilating and the blood loss in dilating channel （P = O. 000）. But there was no significant difference in the operation time of PCNL. Conclusion PCNL of the urinary calculi is safe in Chinese patients. Two-step dilation in PCNL has advantages of shorter dilating time and lower blood loss in different types of calculi during dilating.