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通信作者:蔡秀军,E- mail:cxjzu@hotmail.com
血精症是一种较为常见的泌尿系统症状,其病因复杂多样,单纯的炎症直至泌尿系统的恶性病变均可导致该症状的产生[1]。单纯病史采集和体格检查不易为临床提供有价值的诊断依据,故以往血精症常因无法确定病因而被诊断为“特发性”。随着现代影像医学的发展,尤其是经直肠超声检查在临床的应用,使以往被诊断为“特发性”的病例数量大幅度降低[2]。经直肠超声检查可近距离观察靶器官,图像分辨率高,可准确显示精囊、前列腺、射精管的病变,为血精症病因的诊断提供了新的途径。本研究通过对172例血精症患者行经直肠超声检查,旨在探讨该技术在血精症病因诊断中的应用价值,现报道如下。 相似文献
Background Gastrojejunostomy is one of the most frequently used procedures for general surgeons. The creation of anastomosis between various parts of the gastrointestinal tract is a basic technical component and major task in the daily practice of almost all gastrointestinal procedures. This research evaluated a new procedure of making gastrointestinal anastomosis with stent.
Methods Twenty experimental mini-pigs were randomized into two groups. In stent anastomosis group (SA), the anastomoses were constructed with a poly-levolactic acid stent. In hand-sewn group (HA), the anastomoses were performed with a single-layer continuous suture. Abdominal X-ray with intraluminal contrast was performed on the 10th postoperative day. Five pigs of each group were sacrificed on the postoperative days 3 and 14 to determine anastomotic bursting pressure in situ, hydroxyproline concentration, and histopathological evaluation of the anastomotic sites.
Results There was no intraoperative morbidity or mortality. The median time needed for the sutured anastomosis was (21.7±2.3) minutes and for the stent anastomosis was (11.9±1.9) minutes (P <0.001). Abdominal X-ray with intraluminal contrast demonstrated normal gas distribution and showed no evidence of leakage or obstruction. Macroscopic appearance at the longitudinal opening of anastomosis was always good in both groups. The median anastomotic bursting pressure was (18.2±1.6) kPa in SA group on postoperative day 3, compared with (11.7±3.2) kPa in HA group (P=0.003). The anastomotic bursting pressure on day 14 was not significantly different between SA group ((27.1±2.6) kPa) and HA group ((28.3±1.7) kPa) (P=0.388). The hydroxyproline concentrations were not significantly different.
Conclusions The stent anastomosis was not considered to be more difficult than a sutured anastomosis. This method is proved to be safe and feasible compared with the traditional hand-sewn method in the porcine model. The method increases early anastomotic strength in this study.
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