Distal radial fractures Injectable calcium phosphate bone cement versus conventional treatment

AMEDLINEsearchwasconductedtoidentifystudiespublishedfromJanuary1999toMarch2004thatcom-paredinjectablecalciumphosphatebone(NorianSRS)cementwithconventionaltreatmentindistalradialfrac-tures.Fromalistof13articlesidentifiedfromthesearchstrategy,fourarticleswe…     

Complicated transseptal puncture during intervention catheter ablation on atrial fibrillation concomitant with straight back syndrome

Straight back syndrome (SBS) is a thoracic deformity with absence of upper thoracic spine kyphosis and heart compression. The anatomic abnormity of SBS may raise the difficulty of introcardial operation and increase the complicated risk of intervention performance. Here we report a case of SBS with complicated transseptal puncture during intervention catheter ablation of atrial fibrillation.     

保留骨骺灭活再植术治疗儿童股骨远端骨肉瘤

[目的]探讨保留骨骺灭活再植术的临床应用注意事项及并发症的防治。[方法]回顾6年间所治疗的11例患者,男5例,女6例。平均年龄7.6岁。均位于股骨下端。MRI分型:Ⅰ型7例,Ⅱ型4例。1例合并病理骨折。治疗方法均采用术前化疗2疗程 保留骨骺灭活再植手术 术后化疗。[结果]手术时间为3~4 h。术中出血量为300~500 ml。无血管、神经损伤。术后切口一期愈合,无切口感染及切口延迟愈合。11例获得随访10~72个月,患膝屈曲>110°3例,90°~110°3例,60°~89°4例,<60°1例。下肢等长4例,患肢较健侧短<2 cm 5例,2~3cm 2例。复发1例,转移2例,死亡3例,螺钉松动1例,灭活骨骨折1例。[结论]保留骨骺灭活再植术有利于术后功能恢复和肢体长度的保持;严格无瘤及无菌操作、彻底引流、适当延长外固定的时间、功能锻炼时注意保护肢体等是预防并发症发生的主要措施。     

Risk factors for wheezing in Ukrainian children: Ukraine European Longitudinal Study of Pregnancy and Childhood Group

The prevalence of wheezing in children varies widely around the world. The reasons for this geographic variability remain unclear but may be related in part to exposures in the home environment during pregnancy and early childhood. We investigated the prenatal and early childhood risk factors for wheezing symptoms among 2127 children aged 6–8 years who were participants in the Ukrainian component of the European Longitudinal Study of Pregnancy and Childhood (ELSPAC). Cases included the 169 children whose parents answered yes to the International Study of Asthma and Allergy in Children (ISAAC) question: 'Has your child had wheezing or whistling in the chest in the past 12 months' during the ELSPAC assessment of the children at age 7. These were compared with the 1861 children in the cohort whose parents answered 'no' to this question.
Factors significantly associated with increased risk of wheezing illness at age 7 in adjusted analyses included mother's asthma [adjusted odds ratio (OR) 3.46, 95% confidence interval (CI) 1.22, 9.85]; mother's allergy problems (OR 1.43, [1.00, 2.05]); rarely playing with other children at age 3 (OR 1.84, [1.09, 3.11]); water intrusion (OR 1.62, [1.09, 2.39]) and inadequate heating of the home (OR 1.52, [1.06, 2.16]) during pregnancy. Factors protective of wheezing at age 7 included being first-born (adjusted OR 0.70, 95% CI 0.50, 0.98); living in the city of Dniprodzerzynsk as compared with Kyiv (OR 0.36, [0.24, 0.54]) and weekly contact with furry animals (OR 0.44, [0.20, 0.97]) before age 3. The constellation of risk factors for wheezing in Ukrainian children is similar to that of children in other parts of the world. Known risk factors do not account for the significant between-city variability of wheezing in Ukrainian children.     

NEWLY DEVELOPED ULTRASOUND ENDOSCOPE WITH AN ELECTRONIC RADIAL ARRAY TRANSDUCER

A prototype electronic radial scan ultrasound endoscope has been developed by Olympus (Tokyo, Japan) for endoscopic ultrasound (EUS) study. The ultrasound view‐angle of this model is 360° vertical to the scope. Though the diameter of the scanner and the shaft of the scope is bigger than those of the present mechanical radial scan model, clinical manipulation of the new scope is the same as that of the present model. Image quality of the ultrasound picture demonstrated by the electronic radial model was as clear as those provided by the mechanical radial scan model. Ultrasound penetration was better and satisfactory because of less echoic reduction compared to the mechanical radial model. The newly developed electronic radial model can be evaluated as an ultrasound endoscope for the next generation. The advantage of this system is to facilitate the clinical use of color Doppler function and tissue harmonic imaging, and this system can be operated by the same monitor unit as a convex model of ultrasound endoscope.     

肾综合征出血热内分泌组织中的病毒抗原、病变及其关系

作者应用免疫细胞化学法研究了HFRS尸检内分泌及其有关组织中病毒抗原的分布,病毒抗原阳性细胞与病变的关系,病变的类型及病毒感染对胰腺内胰岛素表达的影响,所用的一抗有抗肾综合征出血热(HFRS)病毒糖蛋白(G_2),核蛋白(NP)及血凝素(HA)抗原的单克隆抗体(15种)和多克隆抗体(PAb)以及抗胰岛素(INS)单克隆抗体。结果显示,内分泌组织中有两种染色形态的病毒抗原,一种是胞浆弥漫染色的抗原,为G_2,NP或HA阳性,阳性细胞弥漫分布,另一种是以病毒包涵体(IB)形式出现的颗粒性抗原,MAbs染色多为实性,PAb染色多为空泡状。在9例胰腺组织中,有4例几乎在所有腺上皮细胞和少数胰岛细胞均为IB阳性,但PAb染色可在胰岛细胞中显示出空泡状IB。在其它内分泌组织中,IB只在少数细胞中出现。抗原阳性细胞很少出现坏死,但在脑垂体及肾上腺灶性或片状凝固性坏死区域也有弥漫性抗原阳性及IB存在。胰腺组织的胰岛素染色显示,除1例胰岛INS强阳性,其余8例均有明显的INS染色减弱及阳性细胞减少的表现。结果提示,内分泌组织中有两种病变,即以IB为特征的病毒直接感染引起的细胞病变,是病毒的弱致病变作用,该病变可能对细胞的内分泌功能产生影响;另一种病变是组织的灶性或大片性同步性凝固性坏死,是继发于病毒感染后的出血和休克,该病变会     

Optimal pole assignment into specified regions and its application to rotating mechanical systems

This paper considers a pole assignment problem to cluster all poles of a closed-loop system into some specified regions by introducing the complex state for systems having an isotropic property and by using the Riccati equation. The algebraic relations for the distribution of the eigenvalues of a complex matrix are used in order to cluster the poles into specified regions, which guarantees the relative stability margin, e.g. uniform damping or uniform damping ratio. The proposed scheme is essentially a combination of the pole assignment approach and linear quadratic design, taking the advantages of both. A block modal control method—an extension of recursive pole assignment—is also developed for the vibration control of rotating systems by clustering the forward and backward modes in order. Vibration control simulations with an isotropic rotor—bearing system, a magnetic bearing system and a rotating circular disc are treated in order to demonstrate the advantages of the proposed method.     

复方山绿茶缓释袋泡剂的研究

用网状多孔性纤维包念材料制备的复方山绿茶缓袋泡剂，具有速释和缓释作用，在１－８ｈ内按埝级方式释药。Ｔ０．５为１．３ｈ，Ｔｄ为３．２ｈ，１－８ｈ的平均释药速率７２．３５ｍｇ／ｈ。与传统的半生药型袋泡剂比较，具有栽药量高，使用方便，性质稳定，疗效确切的优点。     

Laparoscopic cecal ligation and puncture in the rat

Background: We describe a technique of laparoscopic cecal ligation and puncture (CLP) in the rat analogous to open CLP which may facilitate the study of minimally invasive surgery (MIS) and peritonitis. Methods: Forty-four rats were randomized to either laparoscopic or open CLP and their 3-day mortality was recorded. Autopsies were performed for peritoneal fluid cultures, measurement of the length of ligated cecum, and scoring of the degree of cecal necrosis. Results: Laparoscopic CLP required slightly longer operating times compared to open CLP (average 15.6 vs 13.1 min, p= 0.002). Three-day postoperative mortality was 36.4% and 22.7% for open and laparoscopic CLP, respectively (p= NS). There were no differences in the length of ligated cecum or the cecal necrosis score between the open and laparoscopic CLP groups. Conclusion: Laparoscopic CLP is feasible and produces a fecal peritonitis with similar characteristics to those of traditional open CLP. Received: 3 July 1996/Accepted: 7 January 1997