查询词典 coronary

Methods 136 patients with suspected or diagnosed coronary artery disease were studied with 16-slice spiral CT. Choosing left and right coronary artery in the axial enhancement scanning images, previewing 10 images at 0%-100% of the cardiocycle in increments of 10%, We evaluated grade of the image quality and number of the ratable coronary artery in different reconstruction phases. We selected the most clear image of left and right coronary artery, and recorded the phase. Raw data were reconstructed with thin images at the best phase.

对136例临床诊断或拟诊冠心病的患者行16层螺旋CT冠状动脉造影，选取增强扫描R-R心动周期0%~100%的10组图像（间隔10%），评价不同重建时相冠状动脉各主要分支的图像质量等级及可评价冠状动脉数，选择显示最清晰的一组记录时相。

Accuracy between two groups was calculated byχ~2 test.Calculate the average effective radiation dose of the 30 patients.Results In group A,seventeen patients underwent both DSCT coronary angiography and SCAG,among 255 segments of 17 patients,105 lesion sites of 70 segments were diagnosed stenosis or obstruction,of them,95 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 90.48%.The agreement of two methods have a high agreement(Kappa =0.853).In group B,13 patients underwent both DSCT coronary angiography and SCAG,among 195 segments of 13 patients,73 lesion sites of 57 segments were diagnosed stenosis or obstruction, of them,65 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 89.04%.The agreement of two methods have a high agreement(Kappa =0.835). There was no significant difference(χ~2=0.098,p＞0.05) between the accuracy of two groups.The effective radiation dose of 30 patients was 3.67±0.43 mSv.Conclusion Compared with SCAG,prospectively ECG-gated transverse DSCT is a valuable examination to detect and diagnose coronary artery disease with a low dose coronary angiography.The accuracy of the DSCT is approximate to the SCAG.There was no significant difference between the accuracy of two groups.

结果200例患者均成功完成了适应性前瞻性心电门控双源CT冠状动脉血管成像；30例同期行SCAG检查的患者，A组17例：HR≤75 bpm，可评价冠状动脉节段255个，70个冠状动脉节段有105处不同程度的狭窄，95处狭窄程度与金标准SCAG相符，其阳性诊断准确率为90.48%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.853)。B组13例；HR≥91 bpm，可评价冠状动脉节段195个，57个冠状动脉节段有73处不同程度的狭窄，65处狭窄程度与SCAG相符，其阳性诊断准确率为89.04%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.835)。2个心率组间的诊断准确率无明显统计学差异(x~2=0.098，p＞0.05)。30例患者的平均有效辐射剂量为3.67±0.43 mSv结论适应性前瞻性心电门控双源CT冠状动脉成像是一种有效减低辐射剂量的扫描方式，其诊断准确率与金标准SCAG相比得到较高的一致性，且高、低2个心率组间诊断准确率无明显统计学差异。

Results Slight or moderate coronary dilatation and hydropericardium could return to normal within 1 to 2 years, while large coronary artery aneurysm resulting from severe coronary dilatation left behind permanent coronary arterial lesions, which stood for bad prognosis.

结果 轻、中度冠脉扩张及心包积液均能在1~2年内恢复，而重度冠脉扩张成巨大冠脉瘤者则不易恢复，留下永久性冠状动脉病变，预后不良。

A coronary microthromhoembolism model was successfully established by injecting sodium laurate into the coronary arteries. Coronary micro-thrombogenesis may promote the apoptosis of cardiomyocytes, and is one of the reason for heart function decrease. Telmisartan can efficiently suppress ventricles reconstruction, improve heart function, and inhibit the apoptosis of myocardial cells after microthrombogenesis in coronary artery.

冠状动脉内注射月桂酸钠能够成功建立冠状动脉微血栓的模型；冠脉内微血栓增加心肌细胞的凋亡，是导致心功能下降的原因之一；替米沙坦能有效地抑制心脏重塑，改善心功能，并能抑制冠脉微血栓后心肌细胞的凋亡。

Later, under the untypical parasternal four-chamber view which can thoroughly display the ostium of coronary sinus, the catheter was promoted further to the ostium of coronary venous sinus. Then the echocardiography technician adjusted the transducer of TTE in order to thoroughly confirm the position of the catheter tip. After confirming the position of catheter tip in the coronary venous sinus, the operator inserted the catheter into the coronary venous sinus for 3～4 mm farther. It was noted that if resistance was encountered by operator, the operation must be stopped, which was the same as x-ray fluroscopy as image guiding. TTE guiding His bundle elactric cahteter、high right atrium electric cahteter and right ventricular electric catheter in site: It is difficult using TTE singly since there are too many crossroads in inferior venous.

本研究结果显示，(1)单独应用TTE作为影像学引导进行冠状窦电极导管置放的成功率为93.8％～96.7％，并且应用TTE作为影像学引导放置专用冠状窦电极导管和普通电极导管的成功率和放置时间在统计学上无显著差异；(2)TTE作为影像学引导，除过度肥胖患者外，可完全替代X线引导进行冠状窦电极导管置放，包括鞘管和扩张管的放置、指引导丝在静脉而非动脉内的证实均可由TTE完成引导，且较X线C型臂有一定优越性；(3)TTE结合普通X线胃肠透视机作为影像学导引，可顺利完成心内电生理检查时导管的安全到位，而不需昂贵的X线C型臂，可将心内电生理检查扩大到广大的基层医院；(4)TTE较X线更易和更早期发现介入治疗的并发症如急性心包填塞等，对并发症的防治甚至挽救病人的生命至为重要；(5)动物实验研究表明，TEE可引导射频导管消融术时大头电极导管成功到位。

It is found to relate to atherosclerosis, increasing tension of coronary artery, coronary vasospasm, coronary thromboses and vascular restenosis after percutaneous transluminal coronary angioplasty that endothelium reduce generation and re lesae of EDRF/NO.

随着内皮分泌功能的发现，人们逐渐认识到内皮不仅仅是具有单纯弥散屏障作用的细胞成份，它还有：1、调节血管舒缩；2、防止血栓形成；3、大范围的激素调节；4、促使或抑制内皮本身和血管平滑肌细胞的增生；5、调节儿茶酚胺、血小板产物的代谢和失活等作用。

Stens were evaluated to be patent, while 1 stent was not patent. Conclusion: Sixteen slice spiral CT scan of the cardiac coronary artery is a noninvasive,simple and good method. Coronary calcium score and coronary artery stenosis can be evaluated within one study. The patency of stents could also be evaluated. But more experience in more cases of comparative study should be obtained to prove the accuracy of the evaluation of stenosis of coronary arteries and patency of stents.

十六层螺旋CT冠状动脉CT动脉造影(CTA，computer tomography angiography)是一种无创、简便、优良的冠状动脉成像方法，可一次检查完成冠状动脉钙化积分和狭窄评价，也可评价支架通畅情况，但其评价狭窄及支架通畅的准确性有待做更多病例的CTA与常规冠状动脉造影的对照研究。

Methods OPCAB were perfomed in 33 patients of left main with three-vessel coronary disease. The left internal mammary artery was used to be the graft vessel to anastomose with left anterior descending. The saphenous vein was used to be the graft vessel to anastomose with left circumflex coronary artery, right coronary artery/posterior descend artery, diagonal branch, obtuse marginal branch.

方法对33例左冠状动脉主干合并3支血管病变患者施行了OPCAB，用左乳内动脉作为移植血管与左前降支进行吻合，大隐静脉作为移植血管分别与回旋支、右冠状动脉/后降支、对角支和钝缘支进行吻合。

The mechanical property testing shows that the seamless PLLA tubes perform excellent radial strength,which indicates that the mechanical properties of biodegradable stents made of these tubes was supposed to be excellent.PLLA and its composites were first used in preparing seamless tubes as antecedency of laser-cut biodegradable coronary stents in china.Finite element analyses of the biodegradable coronary stent model indicate the explorative design basically meets the requirement of reasonable and applicable stents.There is not such kind of research yet in domestic.Optimum laser-cuttting parameters of CO2 laser was cauculated based on experiential formula,within it,biodegradable coronary stents,especially those with complex structure would be manufacutured from seamless tubes quickly by laser microprocessing with high consistency to the design model.The processing efficiency of the CO2 laser demonstrated in experiential formula by us will play an important guiding role in manufacturing biodegradable stents by laser-processing.Our stents that ascribed to laser-cutted,slotted tube stent are proved to be biodegradable, self-expandable and good biocompatible,basically reach the international level on the aspest of manufacturing procedures and design.

研究结果表明：壳聚糖改性材料综合性能优于纯PLLA，更适合于作为可降解冠脉支架的原材料；自主设计的探索性自膨胀管状闭环型可降解冠脉支架的性能符合冠脉设计要求，设计、验证生物可降解冠脉支架模型的研究在国内还未见报道；制备的改性PLLA无缝管的力学性能优越，可通过激光切割获得冠脉支架，这是国内首次采用聚乳酸材料来制备通过激光加工出可降解冠脉支架的无缝管；二氧化碳激光器加工精度能达到加工要求，加工出来的血管支架名义设计与实测值误差小，实现了冠脉支架、尤其是带有复杂外观设计冠脉支架的快速化、规范化加工，对二氧化碳激光器加工聚乳酸材料的效果研究在国内外属于首创，获得的经验公式对日后的深入研究有重要的指导意义；制备的支架为激光切割管状闭环型冠脉支架，支架外观设计、支架加工手段、支架的性能都基本接近国际水平，支架样品符合设计的理念，可以实现自膨胀功能。

Objective:To investigate distribution of the coronary artery stenoses and the value of selective coronary arteriography on clinical diagnosis of coronary artery disease.

目的 探讨冠状动脉狭窄病变的分布特点及冠状动脉造影在冠心病中的诊断价值。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。