ABSTRACT
Objective:To explore the application of 16-words formula " resection surrounding the proximal part of seminal colliculus, lateral tunnel, plane extending and bladder neck preservation" in transurethral enucleation resection of prostate with plasma rod electrode (TUERP).Methods:The clinical data of 88 patients with benign prostatic hyperplasia (BPH) admitted to our department from May 2018 to July 2019 were retrospectively analyzed. The age of patients was (67.0±8.6)years, and the volume of prostate was (51.0±27.3)ml. All patients were treated with TUERP using transurethral plasma rod electrodes according to the above 16-words formula. The perioperative clinical data and follow-up results at the 3rd month postoperation were statistically analyzed.Results:All operations were successfully completed. The operation time was (49.7±17.7)min, including gland enucleation time (16.8±6.7)min, tissue resection time (33.0±12.3)min, enucleated tissue weight (45.5±24.4)g, intraoperative blood loss (10.2±2.9)ml, postoperative continuous bladder irrigation time (1.9±0.8)d, postoperative hospital stay (4.1±0.7)d. There were no significant changes in hemoglobin and sodium concentration at 2 hours after operation ( P>0.05). The International Prostate Symptom Score (IPSS), quality of life score (QOL), maximum urinary flow rate (MFR) and residual bladder urine were significantly improved at 3 months after operation ( P<0.05). The patients were followed up for 3 to 14 months (average 6.8 months). There were 6 cases of Clavien grade Ⅰ complications, 1 case of Clavien Ⅱ complications, 1 case of Clavien Ⅲ complications, and no Clavien Ⅳ-Ⅴ complications occurred. Conclusions:The TUERP with plasma rod electrode according to the 16-words formula is an ideal choice for BPH treatment, which has the advantages of simple operating, high efficiency of enucleation, less blood loss, fast recovery and satisfied improvement of urination symptom.
ABSTRACT
Objective To evaluate the feasibility, efficacy and safety of new nano material occluder of single rivet type (left-disk with no-hub) in treating ventricular septal defect (VSD) in order to provide experimental basis for clinical application. Methods A total of 26 healthy adult dogs were selected for this study . Under thoracotomy , VSD model was established through fluoroscopically-guided percutaneous puncturing of the right ventricular free wall. The models were randomly and equally divided into the study group(n=13, using nano material VSD occluder) and the control group(n=13, using double-hub nitinol occluder). Every two dogs from each group were sacrificed each time at one, 2, and 3 months after percutaneous closure of VSD with corresponding occluder, the tissue samples were collected and sent for gross examination as well as for the optical and electronic microscopy study;the blood concentration of nickel ion was also determined. The state of endothelialization after implantation of the new type occluder was evaluated, and the complications such as residual shunt and superficial thrombus formation were recorded. The results were analyzed. Results By open chest operation with small incision and percutaneous puncturing of the right ventricular free wall, VSD model was successfully established in all 26 dogs. The success rate of the implantation of the VSD occluder in the study group was 100%, while it was 91.7% in the control group. One, 2, 3 and 6 months after the implantation, the heart specimens of 25 dogs were removed and gross examination showed that neither occluder displacement nor alloy wire fracture occurred in both groups. No thrombus formation or vegetation attached on the disk surface was observed. One month after the procedure , in the study group the bilateral disk surfaces of the occluder were covered with thin layer transparent tissue , which were proved to be composed of the fibrous tissue and endothelial cells through pathologic and electronic microscopy study. Six months after implantation, the superficial tissue of the occluder became further thickened and the occluder edge became fused with the surrounding heart tissue. Conclusion The design of the new VSD nano materials occluder, which has a left-disk with no hub, is very scientific. Compared with double-hub nitinol occluder, the new device can shorten the time of complete endothelialization and effectively occlude the VSD. Therefore, this new nano material occluder has promising prospect in clinical application.