Balloon Electrode Catheter for Transesophageal Atrial Pacing and Transesophageal EGG Recording

A new balloon electrode catheter (10 French) with five or six balloon electrodes placed on the cardiac side was developed for transesophageal atrial pacing and bipolar ECG recording. The diameter of the hemispheric electrodes is 6 mm and the length of the esophageal balloon is 10 cm. The transesophageal atrial pacing threshold was measured with the balloon electrode catheter by transesophageal programmed atrial stimulation (TPS) (n = 54). At the onset of TPS, the feeling, capture fn = 54), and pain voltage threshold (n = 6) were measured by increasing the amplitude of the pacing voltage during high rate bipolar atrial pacing and bipolar atrial ECG recording. In 38 TPS, the capture threshold was lower than the feeling threshold (n = 28). In 16 TPS, the capture threshold was higher than the feeling threshold. In conclusion, painless atrial pacing and excellent ECG recording can be achieved with a multipolar esophageal balloon electrode catheter with a low pacing voltage amplitude and a high P wave amplitude.     

狗喉上神经袢神经束性质的鉴别

用成年杂种狗１２只，在全麻状态下放血，取其颈交感干与喉上神经外支间的交通支及其与喉上神经外支汇合后的神经干，甲醛固定，明胶包埋，恒冷切片后用Ｋａｒｎｏｖｓｋｙ乙酰胆碱酯酶组化方法，对上述材料进行观察。我们发现交通支多为无髓纤维，酶反应呈强阳；混合后的神经含有髓酶反应阳性和阴性纤维及无髓酶反应强阳性纤维，证实喉上神经袢含有体躯运动、内脏运动（交感神经）纤维及感觉纤维。因此，喉上神经拌为混合神经。     

肿胀法外超声吸脂术的组织学研究

目的 观察外超声能量作用于活体组织后的组织学变化，以探索其作用机制。方法 对3只家猪腹部两侧进行外超声与非超声比较，作用不同时间后在光镜和电镜下观察其皮肤组织全层的变化。结果 在外超声作用18min内，随着作用时间的延长，猪的皮下脂肪组织和生物大分子结构的破坏程度不断加重，脂肪组织中产生的空泡不断增大而皮肤组织及血管无明显变化。结论 外超声吸脂术可通过稳定的空泡效应选择性地使脂肪细胞结构发生不可逆的坏死性改变，这一改变与作用时间成正比。     

Effect of Shenmai Injection on L-type Calcium Current of Diaphragmatic Muscle in Rats

Diaphragmaticmuscleisanimportantrespiratorymuscle,anddiaphragmaticfatiguecanleadtomanydisorders .Onlyintherecent 2 0 yearshavethesys temicresearchesbeen performedtoinvestigatethefunctionofdiaphragmanditspathophysiology .Di aphragmaticfatiguecanbeinducedby…     

颈外动脉主要分支的测量与观察

本文对60侧成人半头颈标本的颈外动脉主要分支进行了测量与观察。为了颞浅动脉插管(造影或化疗)及血管吻合术的需要,进一步测量了颞浅动脉与颈外动脉、颞骨颧突部的两个角度以及颞浅动脉内壁的周长,并推算出其内径。旨在为临床应用及国人体质调查提供参考资料。     

手术配合局部外用药治疗慢性肛门湿疹临床观察

目的:观察手术配合术后曲咪新加复方鱼肝油软膏混合膏局部换药治疗慢性肛门湿疹的疗效.方法:将93例慢性肛门湿疹患者随机分为治疗组(47例)和对照组组(46例),治疗组采用手术配合术后曲咪新加复方鱼肝油软膏混合膏局部换药,对照组采用亚甲蓝局部封闭配合术后皮炎平局部换药.观察两组患者术后长短期疗效.结果:治疗组短期有效率为93.61%,疗效优于对照组71.74%(P＜0.01);治疗组远期有效率为89.36%,优于对照组60.87%(P＜0.01).结论:本法治疗慢性顽固性肛门湿疹疗效确切、复发率低.     

Proximal Radio-Ulnar Synostosis at the Pin-Track Site after External Fixation of the Forearm

Abstract Posttraumatic synostosis of the forearm bones is a rare but serious complication following fixation or even conservative treatment of adult forearm fractures. This is the second report in the English literature of such a complication at the pin-track site following external fixation of proximal forearm fractures. A 36-year-old male patient sustained an open fracture of his proximal right forearm after a road traffic accident. It was managed by external fixation of the ulna and plate fixation of the radius. At follow-up, a type 3 radio-ulnar synostosis at the pin-track site became evident, which was treated after 20 months with surgical resection of the bony bridge to regain the rotatory motion of his forearm. An erratum to this article is available at .     

Effect of atrial pacing therapy with selective pacing algorithms on paroxysmal atrial fibrillation

Atrial fibrillation (AF) is the most common cardiac arrhythmia among the elderly. Its incidence increases dramatically with increasing age and decreasing left ventrieular function, peaking in subjects with overt congestive heart failure, Because of the unsatisfactory efficacy and possible serious side effects of clinically available anti-AF drugs for AF patients with sick sinus syndrome, pacing techniques have recently been applied in the treatment of AF. The cardiac pacemaker Vitatron     

外固定架在跟骨关节内骨折治疗中的作用

目的探讨外固定架在跟骨关节内骨折治疗中的作用。方法1996年9月～2005年9月间收治69例跟骨关节内骨折患者，根据治疗方法将其分为两组，外固定架组（31例）在术中应用外固定架进行辅助显露复位或辅助固定，对照组（38例）未用该方法。骨折分型采用Sanders关节内骨折的CT分型，其中Ⅱ型骨折19例（外固定架组9例，对照组10例），Ⅲ型骨折29例（外固定架组12例，对照组17例），Ⅳ型骨折21例（外固定架组10例，对照组11例）。功能结果采用Maryland评分标准评定。结果平均随访时间61个月（16～102个月）。Maryland评分结果：Ⅱ型骨折得分两组之间差异无统计学意义（P=0．760）；Ⅲ型骨折得分两组差异有统计学意义（P=0．042）；Ⅳ型骨折得分两组差异有统计学意义（P=0．037）。外固定架组临床评分总体优于对照组（P=0．015）。并发症包括皮肤坏死、感染、创伤性关节炎等。外固定架组皮肤坏死及创伤性关节炎发生显著低于对照组，差异有统计学意义（P=0．030．0．028）。结论外固定架辅助显露可降低皮肤坏死并发症，辅助韧带整复作用以及微创固定方式可提高Ⅲ型和Ⅳ型骨折复位质量而减少术后创伤性关节炎的发生，有利于足部功能恢复。     

自制三维固定支架与孟和架治疗胫腓骨骨折疗效对比

目的：观察单臂半环式三维固定架与孟和架在胫腓骨骨折治疗中的疗效并就固定架在性能、复位、愈合等方面进行比较。方法：随机选择项目治疗组30例病例和孟和架组（以往）30例在操作难度，骨折复位效果，固定稳定性，骨折愈合时间等方面进行比较结果：项目治疗组解剖复位17例，占57％，近解剖复位13例，占43％；孟和架组解剖复位7例，占23％近解剖复位9例，占30％，以下14例占47％；复位解剖及近解剖均优于孟和架，x^2检验P〈0．01，愈合时间，治疗组2—5个月，平均3．23个月；对照组4-7个月，平均5．64个月。结论：单臂半环三维固定架治疗胫腓骨骨折较孟和架操作简便，复位十分满意，骨折愈合时间短。