闭塞

There were portal collateral vessels around the main portal vein in 8 patients and among them, there was 1 patient with the varix of gallbladder wall, 2 with gastroepiploic varix, 1 with varix on the bile duct wall, 1 with open of the retroperitoneal-paravertebral vein and the splenorenal vein, and 1 with open of the retroperitoneal-paravertebral vein.

结果 在门脉闭塞后，引起相应血管的纡曲扩张及侧支血管的形成，其中有门脉周围形成门－门侧支循环，胆囊壁静脉的曲张，胃网膜静脉的增粗纡曲，胆管壁静脉的纡曲扩张，腹膜后椎体旁侧支血管的开放，脾－肾静脉短路的开放，胃底食管静脉的曲张。

Thirty-nine patients with severe carotid lesion contralateral to CO were studied before (1 day) and after CEA (at 7 days, 1, 3 and 6 months, and then yearly thereafter). Collateral flow and cerebral vasomotor reactivity were assessed by transcranial Doppler sonography.

对39例颈动脉严重狭窄并对侧闭塞的患者于CEA前(1天)和CEA后(7天，1，3，和6个月，以后每年)分别进行研究，应用TCD来评价侧枝血流和脑血管舒缩的反应性。

IMPLICATIONS: By increasing the length of infusion lines, the time until an infusion pump triggered a pressure occlusion alarm was critically prolonged, especially at low infusion rates, as is often used for vasopressor support of unstable patients.

通过增加输注线的长度，输注泵出发压力闭塞闹铃的时间被推迟了。特别是在低输注率的时候，因为它被不稳定患者用作血管压力支持。

The results suggested (1)The membranous obstruction in inferior vena cava was the main reason of BCS in these patients.

结果提示：(1)本组患者中，下腔静脉肝后段膜性闭塞是BCS的主要原因。

Objective:To probe into the clinical features,findings of coronary arteriography and left ventriculography,treatment and prognosis of patients with total occlusion of left main coronary artery.

目的：探讨左冠状动脉主干慢性完全闭塞患者的临床特征，冠状动脉及左心室造影所见、治疗及预后。

But I think it is unfair to those countries where the people do not speak english and not well-informed.

但是我认为这样的一种投票局限性很大，在许多的不发达地区，人们没有电脑或电话，消息也很闭塞。

Haley Barbour told The Associated Press there was "utter obliteration" in parts of Yazoo County.

州长黑利巴伯告诉美联社，有"在亚祖县部分完全闭塞"。

Lots of clinical studies show that early opening of occlusive coronary artery can help resume the forward flow of coronary artery, protect amort cardiac muscle, reduce infarction area, improve heart function and reduce mortality.

大规模临床研究表明，尽早使闭塞的冠状动脉开通，恢复冠状动脉前向血流，可保护濒死心肌，缩小梗死面积，改善心功能。

Results 520 arteries were examined in all, and DSA detected 130 normal, 390 abnormal (75.0%, 120 artherosclerosis, 201 stenosis, 69 occlusion). In the diagnosis of MRA to angiostegnosis , the sensitivity was 95.4%, the specificity was 96.2%, the false positive was 1.3%, and the false negative was 17.7%.

结果 检查缺血性脑血管患者的血管520条，DSA发现130条正常，390条异常（75.0％），其中动脉粥样硬化120处，狭窄201处，闭塞69处；MRA诊断血管狭窄的敏感性为95.4％，特异性为96.2％，假阳性为1.3％，假阴性为15.5％。

In clinical and experimental studies, it has been found that cerebral ischemia and cerebral infarction were easy induced by hypotension in elder, hypertensive cerebral arteriolosclerosis, and stenosis or occlusion in carotid artery or in major cerbral arteries, butnow the effect machanisms still remain unclear.

从临床研究和动物实验也发现，在年老、高血压脑动脉硬化和颈动脉或大的脑动脉狭窄或闭塞时，低血压易诱发脑缺血和脑梗塞，但是目前其作用机制还未完全阐明。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐