左冠状动脉

本组左冠状动脉常规位置投照总次数为304次，右冠状动脉为172次，右前斜位同左前斜位投照次数接近，正位较侧位略多。

In this series , total conventional projection in LCA was 304 , whereas the RCA was 172 . The frequency of RAO projection was almost the same as LAO , the number of AP projection was slightly higher than that of lateral .

13例（52%）右冠状动脉瘘，10例（40%）左冠状动脉瘘，2例部位不明。

There were right coronary artery fistulae in 13 ( 52 % ) cases , left coronary artery fistulae in 10 ( 40 % ) cases and undetermined site in the remaining 2 cases .

多排螺旋CT冠状动脉成像对左冠状动脉主干病变诊断价值的研究

The Diagnostic Value of Multislice Computed Tomography in Left Main Coronary Artery Disease

左冠状动脉右室瘘的X线和MRI诊断1例

X-ray and MRI diagnosed the right ventricular fistula of left coronary arteries : one case

方法以结扎左冠状动脉前降支方法建立大鼠急性心肌缺血模型，缺血6h后分别测定心肌梗死范围，血清超氧化物歧化酶（SOD）活力和丙二醛（MDA）含量；

METHODS Rat myocardial ischaemia model was induced by ligating the anterior descending branch of left coronary artery .

AMI组通过结扎左冠状动脉前降支（LAD）制作AMI模型，Sham组只在LAD下穿线不结扎。

Rats in the AMI group were induced by left anterior descending ( LAD ) branch ligation .

晚期再灌注组持续结扎左冠状动脉6h，再灌注6h；

LR group ligated the coronary artery for 6h and reperfusion for 6h ;

用彩色多普勒超声检查评价血流阻断前后心脏功能变化。3.在数字减影血管造影仪（DSA）下行冠状动脉造影，选择性将诱导的骨髓基质干细胞经左冠状动脉植入心脏内；

Color Doppler ultrasonic examinations were performed to evaluated the changes of ventricular function before and after clipping left coronary .

方法选用SD健康大鼠，结扎冠状动脉制备心肌损伤模型。移植组和对照组结扎左冠状动脉前降支造成急性心肌梗死模型。

Methods Ligation of descending anterior branch of left coronary artery . AMI was induced by ligation of left anterior descending coronary artery .

结论左冠状动脉起源于肺动脉罕见，心血管造影仍然是诊断的金标准，但MRA及彩色多普勒超声心动图是有用的非创伤性的诊断方法。

Conclusion Angiocardiography is still the diagnostic standard , but CE-MRA and echocardiography are valuable noninvasive diagnostic methods .

左冠状动脉前降支结扎4h后，局部心肌呈明显延迟增强，为（821±152）HU。

But significant enhancement was found after LAD ligation for 4 hours ( 82.1 ± 15.2 ) HU .

左冠状动脉通常在心动周期R波后70%相位窗上显示最好，右冠状动脉的最佳相位窗首选为70%相位窗，其次为40%相位窗。

Left coronary arteries were best visualized at 70 % image reconstruction window of the cardiac cycle and right coronary arteries at 70 % and 40 % image reconstruction window .

结果：结扎大鼠左冠状动脉前降支可导致心电图明显的缺血性改变及血清CK活性显著升高；心肌组织的MDA含量和SOD活性显著增加；

Aloperine and propranolol attenuated the ischemic changes of ECG , reduced the level of serum CK activity , myocardial MDA content and SOD activity .

目的探讨左冠状动脉主干（LM）狭窄的临床特点和心功能情况。

Objective To describe clinical and functional features of patients with left main coronary artery ( LM ) stenosis .

目的探索超声CDFI诊断左冠状动脉异常起源于肺动脉的价值。

Objective To evaluate the value of echocardiography CDFI in diagnosing anomalous origin of left coronary artery from the pulmonary artery .

目的用结扎左冠状动脉室支建立新西兰大白兔慢性心力衰竭（chronicheartfailureCHF，简称心衰）模型为CHF的心房离子重构提供动物模型；

Objective To establish chronic heart failure ( CHF ) rabbit model by ligation of ventricular branch of the left coronary arteries . These models were provided to investigate the atrial ionic remodeling .

结扎左冠状动脉前降支以建立急性心肌缺血（AMI）动物模型。

A rat model of acute myocardial ischemia ( AMI ) was made by ligation of the left anterior descending branch of the coronary artery ( LAD ) .

结论超声CDFI可以诊断左冠状动脉起源于肺动脉，它为该病的诊断与治疗提供丰富的信息。

Conclusion Echocardiography CDFI could diagnose the left coronary artery arising from pulmonary artery . It provides abundant information for the diagnosis and treatment .

方法采用麻醉开胸犬结扎左冠状动脉前降支（LAD）产生急性心肌梗死（AMI）模型，测定AMI6h犬的心脏血流动力学及心肌氧代谢参数。

METHODS The parameters of hemodynamics and cardial oxygen metabolism were determined by using the model of ligation of LAD in the anaesthetized open chest dogs .

方法结扎左冠状动脉建立大鼠心肌梗死模型，采用ELISA法测定心肌梗死不同时间内大鼠血浆内TGF-β1的含量；

Methods Rat model of myocardial infarction was established by ligation of left main coronary artery . ELISA method was used to measure the content of TGF - β _1in the blood plasma .

方法对10头开胸的猪结扎左冠状动脉前降支，采用二维超声及DTI对照检测缺血部心肌的运动状况。

Methods Left anterior descending coronary artery of10 thoracotomied pigs by2-D echocardiography and DTI technique and determined the motion states of myocardial ischemia .

方法：在11只开胸犬中结扎左冠状动脉前降支（LAD）建立心肌缺血及梗死模型。

Methods : Moderate ischemia and complete occlusion of coronary artery were produced in 11 open-chest canine models by constricting left anterior descending coronary artery ( LAD ) .

方法分别以结扎大鼠左冠状动脉前降支所致急性心律失常模型和膜片钳技术为基础，观察M3受体的干预作用及作用机制。

Methods Using the acute ischemic model of rats and patch-clamp techniques , the effects of the M_3 receptor on the occurrence of arrhythmias and its possible mechanisms were studied .

30例行CAG者中28例示左冠状动脉明显增粗；3例发现器质性狭窄，并成功置入支架；

Among 30 patients undergoing coronary angiography , 28 patients showed large left coronary arteries , while 3 patients had significant stenotic lesion and then received successful stenting .

方法观察34例经冠状动脉造影确诊为左冠状动脉狭窄而右冠状动脉无病变的冠心病患者，注射造影剂前后QRS时间和额面电轴的变化。

Methods QRS duration and frontal plane QRS axis were measured before and after injection of contrast medium in 34 patients with left coronary artery disease identified by coronary angiography .

晚期再灌注预加美托洛尔组在术前灌服美托洛尔（1mg／kg／d）共七天后，结扎左冠状动脉6h，再灌注6h；

LR + M group drenched metoprolol ( lmg / kg / d ) for seven days , and then ligated the coronary artery for 6h and reperfusion for 6h ;

方法：大鼠分2组，①假手术组（Sham），不结扎左冠状动脉前降支（LAD）；

Methods : The rats were divided into two groups : ① Sham group ( Sham ), the left anterior descending coronary arteries ( LADs ) of rats were not ligated ;

犬离体心脏左冠状动脉插管后作MRI平扫及GDDTPA动态增强扫描，测量正常、缺血和梗死心肌的信号强度，绘制时间信号强度曲线。

The isolated heart was also performed with MRI plain scan and Gd DTPA dynamic enhancement scan . The signal intensity of myocardium was measured and the time signal intensity curves were made .

于左侧第四肋间打开胸腔，剪开心包，在左冠状动脉前降支（LAD）根部穿一细丝线，结扎LAD使心脏局部缺血5min，之后松开结扎线再灌注30min。

The anaesthetized rats were subjected to 5 min of left descending coronary artery ( LAD ) occlusion followed by 30 min of reperfusion .

毁损小脑顶核组，毁损小脑顶核5d后电刺激小脑顶核1h，再行左冠状动脉前降支结扎。

Fastigial nucleus lesion group ( rats were treated with fastigial nucleus electrostimulation for 1 hour 5 days after fastigial nucleus was damaged , and then left anterior descending artery was ligated );