美国OHMEDA麻醉机故障分析与排除

故障1故障现象:病人呼吸回路漏气。可能原因:1.手控时APL阀未关闭,2.钠石灰罐安装不严密,3.螺纹管损坏或接头松动,4.活瓣罩未拧紧,5.手动/自动转换开关失灵。解决方法:1.关闭半紧闭APL阀,2.重新安装半紧闭APL阀,3.更换新管或重新安装管路,4.重新拧紧活瓣罩。故障2故障现象:呼气     

深化改革依法执业崇尚医德注重沟通——努力构建和谐的医患关系

文章回顾了医患关系的历史和现状,将医患关系的发展划分为四个时期,即萌芽成长期、成熟定型期、空前和谐期、转轨变型期,着重指出了转轨变型期医患关系不和谐的现状。分析了医患关系不和谐的成因,首先是体制、机制方面的原因;第二是医疗机构和医务人员方面的原因;第三是社会转轨变型期的各种社会矛盾在医患关系上的体现。探讨了构建和谐医患关系的途径:建立公平高效的医疗卫生体系是前提;崇尚医德,提高医术是基础;交流和沟通是关键;依法执业是保障。     

Acute effects of nitroglycerin on the energetics of the human left ventricular myocardium

We analyzed performance and efficiency of the left ventricular myocardium on the basis of two new energetic parameters. The myocardial energy consumed during one cardiac cycle is related to performed work on the one hand (E1) and to the stress-time-integral on the other (E2). E1 was obtained by analysis of the pressure-volume integral divided by left ventricular muscle mass. E2 was obtained as follows: the stress-time integral was analyzed from pressure-volume data and wall thickness using an ellipsoidal calculation model. In order to transfer the stress-time integral into energy units, the value was multiplied by a constant factor which was obtained in experimental myothermal studies. In ten patients with coronary heart disease undergoing diagnostic heart catheterization, angiocardiography was performed before and after oral administration of nitroglycerin (1.6 mg). Total energy consumption (2E1 + E2) per gram myocardium per beat decreased from 6.1 +/- 1.3 mcal/g to 4.7 +/- 1.4 mcal/g (P less than 0.01), and myocardial efficiency (E1/[2E1 + E2]) increased from 27.0 +/- 3.1% to 28.4 +/- 4.3% (N.S.) on the average. This analysis explains quantitatively the beneficial effect of nitro-preparations on myocardial function and energetics.     

Emergency free flaps to the type IIIC tibial fracture

Type IIIC tibial fractures are complex injuries involving extensive bone and soft-tissue devascularization that result in a high percentage of complications and ultimate amputation. An emergency free flap transfer not only may salvage the limb but also may improve the aesthetic and functional results of reconstruction by placing the injured structures in a well-vascularized bed. Two cases of type IIIC tibial fracture were treated in this manner, and we present our experience with a 30-month follow-up of one patient and a 6-month follow-up of another patient.     

神经肽Y对免疫细胞活性的影响

神经肽Y（NPY）是广泛分布于中枢神经系统和外周神经各部位的神经肽类物质。本实验观察NPY在体外对几种免疫细胞活性的直接作用。结果表明，NPY对小鼠T淋巴细胞丝裂原反应性和NK细胞的杀伤活性均无明显影响（P＞0．05），对巨噬细胞分泌溶菌酶有明显抑制作用（P＜0．05）；而对B淋巴细胞丝裂原反应性则有明显的促进作用（P＜0．05）。上述结果提示，NPY对部分免疫细胞功能的影响因细胞种类而异。     

Paraganglioma of the cauda equina with associated intramedullary cyst: MR findings.

The MR imaging features of a paraganglioma of the cauda equina with associated spinal cord cysts are presented. MR imaging showed the tumor to be isointense with the spinal cord on all pulse sequences and to enhance homogeneously. The intramedullary cysts had increased signal intensity on proton density- and T2-weighted images, and involved the cervical and thoracic regions.