Comparison on efficacy and safety of percutaneous nephrolithotomy for the treatment of renal stones:modified supine Valdivia versus prone position / 中华泌尿外科杂志

Objective To compare the efficacy and safety of percutaneous nephrolithotomy ( PCNL) in modified supine Valdivia and traditional prone positions for the treatment of renal stones.Methods Clinical data of 80 consecutive patients with renal calculi who accepted PCNL from December 2012 to September 2014 were retrospectively reviewed.They were divided into modified supine Valdivia group ( n=44) and prone position group (n=36) according to the position during surgery.There was no significant difference between the 2 groups in age, sex, ASA class, stone location and size (P>0.05).Total operative time, ratio of multi-access, blood loss, perioperative complications and stone-free rate were compared between the 2 groups.Results All punctures were performed successfully.No case was converted to open surgery.No severe complications such as colon injury, pleura or peritoneum perforation, or death occurred intra-and post-operatively.In prone position, 1 patient was found to develop high intra-trachea pressure because of large stone burden and prolonged operative time (130 min).This procedure was stopped and the patient received the second session of PCNL 1 week later.The mean total operative time was significantly shorter in the modified supine than in the prone position ( 67.7 ±24.5 min versus 91.5 ±29.8 min, P0.05 ) .Conclusion PCNL in modified supine Valdivia is as safe and effective as that of prone position for the treatment of renal stones, but the former is more time-saving than the latter.

Retroperitoneal Laparoscopic varicocele ligation / 医学研究生学报

Objective: To assess the clinical results and value of retroperitoneal laparoscopic varicocele ligation. Methods: Sixty-eight cases of retroperitoneal laparoscopic varicocele ligation were analysed retrospectively. Results: Successful surgery was achieved in 67 cases,with average operation time of 30.5 minutes and mean post-operation hospital stay of 3 days.Two cases of recurrence were found during a 3-9 months follow-up. Conclusion:Retroperitoneal laparoscopic varicocele ligation is effective and minimally invasive.

Multifactor analysis of bladder neck contractures after transurethral resection of prostate / 中华男科学杂志

<p><b>OBJECTIVE</b>To analyse different factors related to the occurrence of bladder neck contracture (BNC) and to find possible ways of reducing this complication.</p><p><b>METHODS</b>All putative factors and the numbers of BNC cases were studied with statistical analyses in 1,017 cases that had undergone transurethral resection of the prostate (TURP).</p><p><b>RESULTS</b>The morbidity of BNC after TURP was significantly higher than that of open operations. Small size of the prostate, longer time of operation, higher power in resection and prostatitis were factors of BNC.</p><p><b>CONCLUSION</b>Properties of the prostate and electrical current injuries of resection are the primary factors of BNC. The selection of patients and techniques of TURP are most important in decreasing the morbidity of BNC.</p>

Evaluation on urodynamics of the partial bladder outlet obstruction model / 医学研究生学报

Objective: To establish a rabbit unstable bladder and Partial Bladder Outlet Obstruction (BOO) model, and to study on urodynamic changes. Methods: 30 male New Zealand rabbits were divided into control group and operative group. After 8 weeks, urodynamic changes were determined after they were anaesthetized by ketamine and droperidol. Results: Prominent changes of Main urodynamic parameters were found between the operative group and control group. The incidence rate of unstable bladder was 60%. Conclusion: The method of establishing rabbit model of Partial BOO is successful. It provides a platform for the study on the changes of pathology and pathophysiology of human chronic partial BOO and treatment of this kind of diseases.