纤维多孔钛微球复合纳米锶磷灰石修复骨缺损的实验研究

Objective To evaluate the effect of titanium fiber mesh microballoons combined with nano-Sr-HAP on repair of bone defects in vivo. Methods The experimental model was set up by creating drill defects in the bilateral femoral condyle of 24 SD rats [6 months, with the mean weight of (545±22 g)]. The left femoral defects were filled with titanium fiber mesh microballoons combined with nano-Sr-HAP, and the right with pure metal scaffolds. At the 1st, 2nd, 4th, and 8th week after surgery, the specimens were killed and taken the X-ray, histology, and histomorphology observation. The results were contrasted and ana-lyzed. Results X-ray observation showed that the bone defects in both sides were repaired. Histological re-sults showed that the titanium fiber mesh microballoons allowed the new bones growing inside, and more new bones in the left implants compared with those in the right sides. The results of histomorphometrical analysis confirmed that neo-bones in the left sides gradually increased as time passed. There were statistic differences in neo-bones at the 2nd, 4th, and 8th week, and the differences between the two sides were statistically sig-nificant at the 4th and 8th week. Conclusion As titanium fiber mesh microballoons used in this experiment have good biocompatibility and osteoconduction ability, they can be used as scaffold for bone defect repair; and Nano-Sr-HAP can enhance the repair ability of titanium fiber mesh.     

425例食管癌术后病理分析

手术一直是治疗食管癌的主要手段，而病变的大小、部位、病理类型及术前诊断主要是靠Ｘ线钡餐及内镜检查，也是估计能否手术切除的主要依据。ＣＴ及ＭＲＩ可较好地显示肿瘤与周围器官的关系，但由于医生的认识及病人经济情况所限并未成为常规。肿瘤对食管壁侵犯的深度、范...     

产妇分娩时的心理护理

决定分娩的三因素有产力、产道、和胎儿,其中产力与产道(为软产道、如宫颈)往往受精神因素的影响,而产力的强弱则可以影响胎儿方位的改变。因此,在分娩时精神因素也是决定分娩是否顺利的主要因素。心理护理则可能减少横位,滞产、脐带脱垂,特别是生殖道损伤、子宫破裂及休克等并发症的发生。     

复张后肺水肿5例治疗体会

复张后肺水肿是胸腔排水，排气或手术的危险合并症。1979年以来，我们共遇到5例，治疗中的经验和教训报道如下。1病例摘要例1，男，60岁。因左侧气胸反复排气半月不复张入院。血压互60／9．OKPa，左肺压缩0．75，入院后排气四次，仍不复张，第四天插管引流，管未夹闭，大量气体排出。3h后血压下降为6．6／OKPa，高度呼吸困难，咳泡沫痰。经吸氧、添点多巴胶，阿拉明，氨茶硷；强心、利尿，应用吗啡；严格限制液量，抢救3h余。终因血压不升，粉红色泡沫痰自鼻口涌流而亡。例2，女，66岁。为COPD合并右侧气胸，肺压缩0．80人院。血压160／…