Long-term fate of gastrocystoplasty and enterocystoplasty: an experimental study

This study was carried out on 100 rats with an average weight of 250 grams. They were divided Into 5 groups: 20 non-operated rats served as a control group, while 20 rats each underwent sham procedure, gastrocystoplasty, ileocystoplasty and sigmoidocystoplasty. All operations were performed with microsurgery by a technique which is described. The rats were sacrificed 12 months postoperatively. There were no differences in serum electrolytes or renal function between the single groups. All urine cultures taken pre- and postoperatively were sterile. Prominent histopathologic changes were observed in the transplanted gastric and intestinal tissues and in the adjacent bladder wall. Possible aetiologies are discussed, but the actual aetiology and the potential for malignant progression of these lesions are unknown. Thus further studies with longer follow-up are warranted

Clinical experience with a second generation lithotriptor

Brake stone 100 was one of the second generation lithotriptor, used in this study. 131 ESWL sessions were performed on 100 patients. 10 patients without anesthesia. 79 patients with light analgesia and sedation and 11 patients with general anesthesia. Stone location comprises, 16 in the upper calix, 20 in the middle calix, 28 in the lower calix, 20 in the pelvis, 4 staghorn stones and 12 in the upper ureter. No auxiliary procedures were used prior to ESWL and all ureteric stones were treated un situ. Procedural time ranged between 15 and 45 minutes, number of shocks 500 - 2500 and multiple treatments in 31 [22 second sessions and 9 third sessions]. Fragmentation rate was 69% after first session, complete to 93% after third session, but the clearance rate was 74%. No major complication was observed