节育环嵌顿子宫壁的诊断、处理及预防

我国采用宫内节育环避孕，已有几十年的历史了。通过大量临床实践证明，它是一种有效、简便、经济、取出后不影响生育能力，深受广大妇女欢迎的避孕措施。但它还存在着一定的缺陷即：嵌顿子宫壁。往往造成取环困难，如处理不当，就会给上环妇女增加很大痛苦，同时节育环嵌顿也使其失去避孕作用。据笔者观察，较为常见的有：节育环嵌于子宫内膜层、肌层、浆膜层。现结合病例探讨其诊断处理方法及预防措施，进一步提高节育环避孕的效果，提出个人意见供讨论。     

兔动静脉短路环法诱导组织工程骨支架材料血管生成的初步研究

Objective To compare the effects of 2 vascular carriers, arteriovenous loop and arteri-ovenous bundle, on inducing angiogenesis in coral scaffold of vascularized tissue-engineered bone in animal models.Methods Thirty-six adult male New Zealand rabbits were randomized into 2 even groups.In group A, an arteriovenous loop (AVL) was formed by microsurgical anastomosis at the proximal ends between the femoral poptiteal artery and vein, and placed in the circular side groove of the coral block (6 mm × 8 mm × 10 mm) .In group B, flow-through vessels bundles of both femoral artery and vein were placed in the side grooves of the coral block.All the implants in 2 groups were wrapped by a micro-porous expand-ed-polytetrafluoroethylene (ePTFE) membrane, and fixed subcutaneously by suturing.Evaluation methods included gross morphological observations, histological examinations, India ink perfusion and vascular casting after 2, 4, 6 weeks.The density of blood vessels was analyzed by the statistical software SPSS 10.0.Results All the corals were encased by newly formed fibrovascular tissues in 2 groups.Ink-stained vessels distributed the surfaces and side grooves, and invaded the interspaces of corals.The degree of vascularization increased over the course of experiment.Blood vessel density demonstrated a significant continuous increase between 2 and 6 weeks after implantation in group A.The mean value of blood vessel density in group A (2 weeks 276.60±4.67, 4 weeks 517.20±10.66, 6 weeks 707.00 ±11.87) was significantly higher than in group B (2 weeks 153.60 ±7.16, 4 weeks 269.40±6.80, 6 weeks 279.20±6.53) (P <0.01).Vascular casting showed that in group A, significant blood vessels sprouted from all areas of the loop, espe-cially at the entrance of the arteriovenous pediele where the small tubes were densely interconnected.In group B, however, no blood vessels sprouted from the arteriovenous bundles and only some small vessels grew from the entrance and exit.Conclusions A vascularized coral model can be constructed by inserting an ar-teriovenous loop or an arteriovenous bundle, useful in vascular bone tissue engineering.The former, however, have stronger abilities to induce angiogenesis than the latter.     

胎儿垂体前叶激素释放的超微结构研究

本文通过5例水囊引产、不同胎龄胎儿垂体前叶超微结构研究,从形态上证明前叶激素的释放有多种方式:1.胞吐和错位胞吐;2.以胞质小块释放入血窦:有突起的细胞将突起伸入血管间隙,末端与细胞脱离形成含分泌颗粒的胞质小块,经内皮窗孔进入血窦;3、越膜渗出:分泌颗粒内容物跨越颗粒膜和细胞膜渗出细胞;4.有脑颗粒的排出;5.血窦内皮的吞噬和转运作用。[关     

硬膜外自家血充填疗法防治腰穿后头痛的体会(附12例报告)

我院自1968年至1984年共施行连续硬膜外麻醉15000人次,其中穿破硬膜12人次(0.08％)。采用硬膜外自家血充填法,防治刺破硬膜后并发头痛取得良好效果,现介绍如下。自家血液配制:以10ml注射器抽蒸溜水4ml。再抽自家血6ml,充分摇动,使红细胞溶解,避免血液凝固形成小的凝血块。     

经皮穿刺置管引流治疗细菌性肝脓肿17例报告

我院自1986年1月共收治细菌性肝脓肿27例,对其中17例采用经皮穿刺置管引流治疗,疗效满意,现报告如下:临床资料一般资料:本组17例,男15例,女2例,年令最大55岁,最小13岁,平均37岁。脓肿位于右叶者14例,左叶3例,单     

烧伤患儿恐惧心理的护理

小儿烧(烫)伤是日常生活中十分常见的意外伤害,它不仅导致患儿身体遭受损害,还给患儿心理造成极大的恐惧感,导致了生活方式的改变。近年来,随着医学模式由生物医学模式向心理、社会、生物医学模式的转变,推广“以人为本,以病人为中心”的新型医疗模式,心理护理也得到了人们青睐     

螺旋CT的滑环故障及维修

滑环是螺旋CT最基本的部件之一,承担着扫描架中固定与旋转部件之间的供电、接地及信息传递等功能,并介绍了滑环的基本结构、故障检修及维护.     

做好病案的社会化服务

病案作为医疗信息的重要资源,不仅为临床、教学、科研提供服务,而且随着我国市场经济的发展和社会的进步,城镇医疗体制改革和医疗保险制度的不断完善,商业保险的普及,人们法律意识和自我保护意识的增强,病案资源的利用已不再局限于医院内部使用,而是走向社会。现就我院2001-200     

子宫动脉栓塞术治疗子宫腺肌症后妊娠1例

子宫腺肌症是由于子宫内膜的腺体和基质异位生长于子宫肌层使子宫体积弥漫性增大的疾病。临床表现为痛经、月经过多、子宫增大和不孕。它是一种妇科常见病，其发病率呈上升趋势，国内报道为16．7％，国外为8．8％～31．0%。该病的治疗一直较为困难，传统多以子宫切除为主，药物治疗为辅。但药物治疗疗效欠佳，易反复且不良反应大；而生育年龄的年轻患者切除子宫，不但丧失生育能力，导致内分泌失调，亦在心理上产生不良影响，