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Objective To explore the clinical causes and preventive measures of complicating ascites of mini-percutaneous nephrolithotripsy (MPCNL).Methods Retrospective analysis of 285 patients with MPCNL for upper urinary tract calculus,which were divided into ascites group and no-ascites group.Results All the procedures were successful.Ascites group of 21 cases,no-ascites group of 264 cases.Univariate analysis showed that the diameter and number of calculus,perfusion pressure,perfusion time,pressure volume of irrigation fluid,preoperative upper urinary tract infection,history of treatment associated with complicating ascites (P＜ 0.05),with age,gender,body mass index no correlation (P＞ 0.05).Logistic regression analysis showed that perfusion pressure,perfusion time,pressure volume of irrigation fluid was independent risk factors after MPCNL concurrent ascites (P ＜ 0.05).Conclusions MPCNL concurrent ascites are closely related to the large perfusion volume,the long operative perfusion time,the high perfusion pressure of irrigation fluid.On the premise of keeping the operative visual field clear,as far as possible to reduce the perfusion pressure,control irrigation fluid-flow rate,reduce the large peffusion volume.These could decrease the coincidence of the ascites.
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Objective To investigate the causes of urinary calculi recurrence following ESWL. Methods After constructing the animal model of urinary calculi,the sheep with stone were treated by ESWL and the treated kidney was checked with morphological studies. Results The renal pelvic membrane was initially damaged heavily,the injure being healed from 2 ～ 4 weeks.At the same time, there were some calculi particles embeded in the renal pelvic membrane. Conclusions The embeded calculi particles and the damage of the pelvic membrane were the main causes of calculi recurrence following ESWL.
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Objective To evaluate the diagnostic value of 3-dimentional spiral computer tomography (3 D- sCT) in patients with upper urinary tract obstruction. Methods 113 patients with upper urinary tract obstruction were subjected to 3D-sCT. Results The site of urinary tract obstruction and hydronephrosis were distinctly shown in all patients by 3D-sCT. 112 of them were confirmed by ESWL, pathological or operative findings. Conclusions 3D-sCT can exactly show the location, cause and interaction of the upper urinary obstruction, and is especially applied to patients with resultless IVP and unable to retrograde pyelography.
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Objective To evaluate the therapeutic effeet of transurethral non-contact laser in the bladder neck stricture. Methods Q-9000 laser generator was used.The Nd-YAG laser was located to the bladder neck by laser fiber(USA).The bladder neck was cut on the point of 12 and 6 in all 39 cases. Results The maximum urinary flow was increased from (8.2?2.4)ml/s to (16.5?3.2)ml/s after operation. Conclusions Transurethral non-contact laser is effective for the treatment of bladder neck stricture.