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31.
Influence of Electromagnetic Fields on Function of Automated External Defibrillators 总被引:3,自引:2,他引:1
Roman Fleischhackl MD Florian Singer MD Wolfgang Nitsche PhD MSc Eng Guenther Gamperl MSc Engineering Bernhard Roessler MD Jasmin Arrich MD Sabine Fleischhackl MD Heidrun Losert MD Fritz Sterz MD Martina Mittlboeck PhD MSc Klaus Hoerauf PhD MD 《Academic emergency medicine》2006,13(1):1-6
Objectives: In this study, the authors tested whether electromagnetic interference (EMI) is able to impair correct electrocardiogram analysis and produce false‐positive shock advice from automated external defibrillators (AEDs) when the true rhythm is sinus. Methods: Nineteen healthy subjects were used to test five AEDs available on the Austrian market in a prospective, open, and sequence‐randomized study. The primary outcome variable was the absolute number of shocks advised in the presence of EMI. The secondary outcome was the number of impaired analyses caused by incorrectly detected patient movements or electrode failure. Results: Of 760 tests run, 18 (2.37%) cases of false‐positive results occurred, and two of five AEDs recommended shocks in the presence of sinus rhythm. Of 760 tests run, no electrode failures occurred. There were 27 occurrences (3.55%) of motion detected by an AED in the presence of strong electromagnetic fields. Conclusions: AED models differ in their response to EMI; it may be useful to consider specific safety requirements for areas with such fields present. Working personnel and emergency medical services staff should be informed about potential risks and the possible need for patient evacuation before AEDs are attached and shock recommendations are followed. 相似文献
32.
经研究表明颈外静脉的瓣膜、缩窄环、瓣膜窦及窦段静脉壁共同组成一个灵敏地、高强度地抗逆流装置。本文称之为瓣膜窦段并报道189段的尸体解剖和光镜观察结果;测定尸体、活体和手术中瓣膜窦段的抗逆流功能,表明颈外静脉适于用无瓣导管作脑积水等分流途径。初步探明颈外静脉怒张的原因和消除怒张的简便方法以及术前鉴定瓣膜窦段位置和功能的方法。对2例脑积水用无瓣导管作侧脑室颈外静脉分流取得初步疗效。 相似文献
33.
杨永康 《中国烧伤创疡杂志》2006,18(3):223-225
目的:观察美宝湿润烧伤膏在血栓性外痔和陈旧性肛裂切除术后治疗中的疗效。方法:术毕用MEBO纱布条填塞伤口,术后24小时取出纱布条,以后用MEBO涂于伤口内,每日2次,直至痊愈。结果:48例患者无术后伤口疼痛、出血、感染及肛门狭窄。伤口愈合时间短,治愈率高。结论:美宝湿润烧伤膏是血栓性外痔、陈旧性肛裂切除术后良好的局部治疗药物。 相似文献
34.
Harwant S. Gill Michael W. O'Boyle Julie Hathaway 《Cortex; a journal devoted to the study of the nervous system and behavior》1998,34(5):707-718
Alpha power (8–12 Hz) was monitored over the frontal, temporal, parietal and occipital lobes of the left and right cerebral hemispheres while participants mentally rotated three-dimensional shapes to match a specified target. By comparing the activational patterns generated during three experimental conditions, each designed to systematically isolate the involvement of the various subcomponents comprising this mental rotation task, it was suggested that the right frontal lobe mediates encoding and comparison/decision processes, while the left parietal and the left temporal region appear most involved in the generation of images and their mental rotation. A preliminary model describing the cooperative interaction of these cortical regions during mental rotation tasks is proposed. 相似文献
35.
M. M. Moneer 《Surgery today》1997,27(11):1022-1025
This study consists of a preliminary report of 94 cases with various types of inguinal hernias. All cases were repaired by
a new technique, in which the herniotomy is performed via a preperitoneal approach and the repair is achieved by using a bipedicled
flap from the external oblique aponeurosis, which is transpositioned into the preperitoneal space and sutured to the iliopubic
tract. The details of this technique are herein described. After a follow-up ranging from 15 to 48 months, both the early
and late complications are presented. They were minimal and of minor significance, apart from a hernial recurrence in one
case. 相似文献
36.
37.
1999~2001年全国治疗药物监测室间质评结果 总被引:1,自引:0,他引:1
目的:通过开展室间质量评价活动提高临床实验室的检验结果质量。方法:每年向参加治疗药物监测(TDM)室间质量评价活动的单位发放质控品10个批号,测定项目包括茶碱、地高辛、苯妥英、苯巴比妥、卡马西平和环孢菌素A,实验室用常规方法测定并回报测定结果,经计算机软件对全部结果进行统计分析。结果:2001年参加TDM室间质评的实验室数为48家,测定结果的平均及格率分别为茶碱94.2%、地高辛82.6%、苯妥英83.8%、苯巴比妥88.4%、卡马西平94.2和环孢菌素A92.4%。1999~2001年全国TDM室间质评的年平均及格率分别为78.7%、84.7%和89.3%。不同测定方法的精密度分别为茶碱4.4%~14.2%、地高辛11.5%~21.9%、苯妥英8.5%~29.5%、苯巴比妥8.2%~13.9%、卡马西平10.8%~12.6%和环孢菌素A15.5%~16.6%。结论:多数参加TDM室间质评实验室的测定结果有较好的一致性,及格率逐年上升,但参加TDM室间质评的实验室数占开展TDM的实验室总数的比例较低,在不同的测定方法间还存在较大的差异。 相似文献
38.
本文解剖观察、测量了16具32例新生儿尸体的颈外静脉,结果其平均长度为4.37±0.94Cm,平均管径起点为0.16±0.05Cm,汇合点为0.24±0.07Cm,注入点为0.28±0.08Cm,被测量的颈外静脉中有98%的下段后壁上有一较大的属支.全长可分为三段,根据回流部位不同可分为三型,即锁骨下静脉型、静脉角型和颈内静脉型. 相似文献
39.
Dynamic response of the occipito-atlanto-axial (C0-C1-C2) complex in right axial rotation. 总被引:2,自引:0,他引:2
H Chang L G Gilbertson V K Goel J M Winterbottom C R Clark A Patwardhan 《Journal of orthopaedic research》1992,10(3):446-453
The torque-angular deformation in right axial rotation until failure of the ligamentous occipito-atlanto-axial complex subjected to variable loading rate (dynamic) axial torque was characterized using a biaxial MTS system. A special fixture and gear box that permitted right axial rotation of the specimen until failure without imposing any additional constraints were used to obtain the data. The specimens were divided into three groups and tested until failure at three different dynamic loading rates: 50, 100, and 400 degrees/s. A previous study by the authors provided data for quasi-static (4 degrees/s) loading conditions. The torque versus rotation curves can be divided into two straight regions and two transition zones. The plots clearly indicated that at loading rates higher than 4 degrees/s, the specimens became stiffer in the region of steadily increasing resistance prior to failure. The increase in stiffness was maximum at 100 degrees/s. The stiffness decreased somewhat at 400 degrees/s in comparison with 100 degrees/s, but this decrease was not significant. The resulting torque-right axial rotation curves were also examined to estimate the magnitude of maximum resistance (torque) and the corresponding angular rotation value. The average maximum resistance torque increased from 13.6 Nm at 4 degrees/s to 27.8 Nm at 100 degrees/s. The corresponding right angular rotation data (65-78 degrees), however, did not show any significant variation with loading rate. Posttest dissection of the specimens indicated that the type of injury observed was related to the rate of axial loading imposed on a specimen during testing.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
40.
全国细菌药敏试验的室间质量评价 总被引:1,自引:0,他引:1
目的:了解全国大中型医院细菌药敏试验(AST)状况,提高检测水平和质量。方法:定期向全国各参加评价实验室发放冻干标本,要求在规定时间内报告可疑感染的病原菌及其药敏结果,对回报结果给予数据统计、分析和评价。结果:2000年全国489个细菌室对常见耐药菌的检测正确率分别为:超广谱β-内酰胺酶63%(ESBLs);苯唑西林敏感金黄色葡萄球菌(MSSA)74%;苯唑西林耐药凝固酶阴性葡萄球菌(MRSCoN)48%;对青霉素不敏感肺炎链球菌7%;氨基糖苷类高水平耐药肠球菌95%;产β-内酰胺酶流感嗜血杆菌正确率35%。结论:通过细菌药敏试验的室间质量评价反映出我国的细菌耐药性检测水平急待提高。 相似文献