RPI卡环受力分析与临床应用

本文讨论了常规设计的游离端义齿存在的问题,并对Kratochvil提出的RPI卡环,结合力学知识,提出了RPI卡环在游离端义齿应用中的优缺点,并通过典型病例介绍和对20名病例随访分析表明,用RPI卡环修复游离端牙齿缺失,可获得较好的临床效果。     

家兔胸部火器伤后各组织中TNF-α表达意义

目的 用免疫组织化学方法检测家兔胸部火器伤后各组织中TNF-α的表达,探讨其伤后表达变化规律。方法 64只家兔随机均分8组,除正常对照组外均用5.56mm小口径步枪距离6m射击兔右下胸第八肋间锁骨中线外1cm处造成前后胸贯通伤,经指袢排气及消毒缝闭胸壁伤口等简单救治,致伤7组家兔分为伤后0.5,1,6,24和72h,7d,30d取材组,每只均取伤肺距伤道2mm处、1cm处,邻叶中部、与伤道对应的对侧肺处、左室壁、肝肾、脑、垂体、肾上腺取组织标本,行免疫组织化学染色检测组织TNF－α表达。结果 伤后0.5h各组织中TNF－α表达即升高（P＜0.01）,6h已达高峰,持续数天,7d后降低,30d后与伤前无明显差别。不同时间组同一组织TNF－α表达定位基本相同,而表达强度有所不同。结论 家兔胸部火器伤后各组织中TNF－α表达明显升高并与损伤时间密切相关,同一组织TNF－α表达定位基本相同,TNF-α在各组织中表达强度一定程度上反映了动物伤情。     

应用经颅多普勒检测对椎-基底动脉供血不足原因的探讨

我们收集 1 990～ 1 999年共 5 0 0例临床确诊为椎 基底动脉供血不足 (Ｖｅｒｔｅｂｒｏｂａｓｉｌａｒｉｎｓｕｆｆｉｃｉｅｎｃｙ ,ＶＢＩ)的中老年病人 ,采用经颅多普勒超声 (ＴＣＤ)检测对该病病因进行探讨 ,结果报告如下。1　资料与方法　　 5 0 0例受检者中男性 2 85例 ,女性 2 1 5例 ,平均年龄 5 6 .4岁。病程 8ｄ至 2 0年 ,均以发作性眩晕起病。主要表现为反复发作性眩晕、头昏、呕吐、耳鸣、听力减退、视物模糊、四肢麻木、共济失调等症状。其它检查发现该组病例具有颈椎病、高血压、脑动脉粥样硬化症、高脂血症、高粘血症等。以…     

经皮球囊二尖瓣成形术疗效分析

本文分析经皮球囊二尖瓣成形术治疗风湿性二尖瓣狭窄的疗效。结果表明 ,PBMV耗费少 ,住院期短。效果良好 ,值得推广应用     

周围神经损伤后免疫系统变化的动物实验观察

目的 :检测周围神经损伤后免疫系统的变化。方法 :用 MTT法检测了坐骨神经损伤 1 ,2 ,5,7和 1 4d的大鼠脾细胞 NK活性及淋巴细胞转化功能 ,并用 PEG沉淀法检测了大鼠血清中循环免疫复合物 (CIC)的含量。结果 :坐骨神经损伤后 7和 1 4d大鼠脾细胞的自发转化率较对照组 (同样手术应激但无坐骨神经损伤 )略有增高 ;循环免疫复合物的含量术后 7d明显增高 ,1 4d时增加明显 ;而 NK活性则无明显变化 ,后期变化如何尚待进一步研究。结论 :周围神经损伤后 ,机体发生了免疫变化。     

川芎嗪与前列腺素E1联合治疗慢性肺源性心脏病急性发作期疗效观察

目的 观察联用川芎嗪（ＬＴ）和前列素（ＰＧＥ４）治疗慢性肺源性心脏病（肺心病）急性发作期患者的临床疗效。方法 １０５例肺心病急性发作期患者随机分为治疗组（５４例）和对照组（５１例）,治疗组采用ＬＴ联合ＰＧＥ１治疗;对照组采用单纯ＰＧＥ１治疗。２组患者于治疗后１０ｄ测定血液流变学指标并进行疗效判定。结果 治疗组显效率（５９．２６％）明显高于对照组（３９．２２％）,２组比较具有显著差异（Ｐ〈０．０５）     

仁术健胃颗粒逆转胃癌前期病变的临床研究

目的观察仁术健胃颗粒对胃癌前病变的逆转作用。方法将１２０例符合诊断标准的胃癌前期病变患者,随机分为仁术健胃颗粒治疗组８０例和胃复春对照组４０例进行临床疗效观察。结果①综合疗效：治疗组总有效率为９１．２５％,对照组为７５．００％,经统计学处理,差异有显著性（Ｐ〈０．０５）;②治疗组胃镜及对萎缩、肠化、异型增生的疗效分别为７１．２５％、７７．５０％、７９．４９％、８８．４６％,对照组为５２．５０％、６     

TURD－ 800 X光机故障维修 2例

TURD－ 800型 X线机是一种大型 800mA诊断 X线机,我院自 1989年引进至今已有 11年,在使用过程中曾出现过一些故障。现就我们所遇到过的两例故障的成功维修作一介绍。 1 故障现象机器能够曝光,随机毫安表指针在曝光时有较小幅度的摆动,洗出的 X光片上有很淡的影像, X线量严重不足。     

三个半规管阻塞动物模型的建立

目的 旨在建立豚鼠单侧三个半规管阻塞的动物模型。方法 利用２０只豚鼠行单侧三个半规管阻塞,观察手术前后眼震电图、听性脑干反应（ａｕｄｉｔｏｒｙ ｂｒａｉｎｓｔｅｍ ｒｅｓｐｏｎｓｅｓ,ＡＢＲ）、畸变产物耳声发射（ｄｉｓｔｏｒｔｉｏｎ ｐｒｏｄｕｃｔ ｏｔｏａｃｏｕｓｔｉｃ ｅｍｉｓｓｉｏｎ,ＤＰＯＡＥ）及形态学的变化,非手术耳作对照。结果 豚鼠术后１ｄ出现自发性眼震,正弦摆动刺激单侧眼震反应消失,     

Otolaryngology Consultation for Peritonsillar Abscess in the Pediatric Population

Objective To assess clinical outcomes of children seen in consultation for peritonsillar abscess treated without the routine use of computed tomography or needle aspiration. Study Design Retrospective review of patients evaluated in the emergency department for possible peritonsillar abscess. Patient outcomes are reviewed with a statistical analysis of children grouped according to age. Methods A series of 102 patients, ages 8 months to 19 years, who were evaluated by the emergency department with otolaryngology consultation for possible peritonsillar abscess. All patients were admitted and given intravenous fluid replacement, antibiotics, and analgesia. Patients who responded to 24 hours of medical treatment were discharged, whereas patients who did not respond underwent elective tonsillectomy. Main Outcome Measure Outcome of patients evaluated for peritonsillar abscess treated without immediate surgery, needle aspiration, or computed tomography. Outcomes are correlated with age and clinical findings. Results Fifty‐two patients were discharged after initial medical therapy. Fifty patients underwent elective tonsillectomy; 40 of these patients were found to have abscesses at the time of surgery. When analyzed according to age, patients ages 8 months to 6 years were more likely to respond to medical treatment than children ages 7 to 12 and 12 to 19 (P = .023). Significant differences in the mean age of children requiring surgery (11.0 y) compared with those who responded to medical treatment (7.9 y) were observed (P = .003). Younger children who underwent tonsillectomy had a lower incidence of surgically confirmed abscess. Conclusions A significant number of children presenting with odynophagia, malaise, pharyngotonsillar bulge, and decreased oral intake respond to medical therapy without radiological evaluation or surgical intervention. Additionally, younger children (1–6 y) are more likely to respond to medical treatment than older children. Pertinent clinical data, as well as advantages and disadvantages of this approach, are discussed.