小剂量多巴酚丁胺超声心动图显象预测冠脉旁路术后异常收缩心肌节段的早期反应

观察小剂量多巴酚丁胺超声心动图显象对冠脉旁路术后心肌节段收缩功能恢复的预测价值。 方法 对30例三支冠脉病变和慢性稳定型心绞痛病人作冠脉旁路术。病人麻醉后插入经食道超声探头,获取左室乳头肌水平的短轴切面。在①心包切开后(基础情况);②冠脉旁路术前多巴酚丁胺(5μg/kg/min)输注5分钟后;⑧术后人工心肺机断开后作三次超声图象记录。将左室短轴切面分成8个节段。测量收缩末期(SWT)和舒张末期(DWT)室壁厚度,并计算收缩期室壁增厚率(PSWT)。以基础情况下PSWT<30％     

应变率成像评价冠心病支架置入术前后左心室局部收缩功能变化的研究

目的:探讨应变率成像技术(SRI)定量评价冠心病支架置入术后早期左心室局部收缩功能变化的临床价值。方法:50例经冠状动脉造影(CAG)证实存在左前降支(LAD)75%～100%不同程度的狭窄,分别在LAD支架置入术前1～3d,术后7d、3个月测量前壁及前间隔的基底段、中间段和心尖段的收缩期应变率(SRs)及左心室局部收缩功能的变化,测量左心室射血分数(LVEF),并与正常对照组(50例)进行比较。结果:与术前相比,术后7d各节段心肌的应变率均有增加(P<0.05),术后3个月各节段心肌的应变率、LVEF明显增加(P<0.01)。术前平均LVEF为0.468±0.076,术后7d增加为0.517+0.059(P<0.05),术后3个月则增加0.587±0.038(P<0.01)。结论:SRI可以无创定量评价冠心病冠状动脉支架置入术后早期左心室局部收缩功能的变化。     

二维超声室壁运动异常与冠脉病变范围的关联性

目的 :分析心肌梗死患者二维超声室壁运动异常节段分布与冠状动脉损伤间的关系。方法 :回顾性分析 92例心梗患者二维超声室壁运动异常节段分布情况 ,并与冠状动脉病变范围进行比较。结果 :1冠状动脉梗塞后左前降支 （L AD）受累最为多见 （45 % ） ;2 L AD单支病变与前壁、前间隔及心尖部室壁运动异常有关 （P<0 .0 5 ）。 L AD与左回旋支病变 ,主要为前间隔和下壁运动异常 ;而单纯的下壁室壁运动异常多为左旋支与右冠状动脉病变引起。 3支病变造成心肌运动普遍减低 ,且以侧壁及前侧壁的室壁运动异常则更为显著 （P<0 .0 5 ）。结论 :二维超声心动图室壁运动异常与冠脉病变范围有较好的关联性。     

磁共振评估室壁瘤患者手术后室壁应力及收缩功能的变化

目的 研究左心室成形术对心肌梗死后室壁瘤患者左心室应力及收缩功能的影响.方法 以2005年1月至2006年6月间16例因心肌梗死后室壁瘤在我院行外科手术的患者为研究对象,其中男15例,女1例,年龄38～68(56.6±8.8)岁.所有患者手术前行磁共振(MRI)检查,用Seimens Magnetom Avanto 1.5T MR常规扫描、长轴和短轴电影及延迟增强序列扫描.术前明确诊断为前壁心尖部室壁瘤.所有患者均在全身麻醉低温体外循环下施行手术,其中线性缝合术5例,心内膜环缩成形6例,左心室内补片成形5例.15例同期行冠状动脉旁路移植术.术后3个月内按相同序列复查MRI.用成像仪的自动图像分析系统进行左室几何形态参数测量及节段性心功能测量,根据MRI相关数据结合测量袖带血压计算室壁应力.根据术前冠状动脉造影检查结果与术中再血管化情况对比确定相应再血管化及未再血管化的节段.用配对t检验比较手术前后节段性室壁应力和室壁增厚率的变化.结果 MRI检查均顺利完成并获得了具有诊断价值的图像.选取基底水平及乳头肌水平两个切面用六分法分节段,16个病例共192个节段,其中未再血管化节段74个.与术前相比,未再管化的节段术后节段性室壁增厚率增强,室壁应力下降,且室壁增厚率的增强与应力下降呈正相关.结论 左心室成形术可以降低心肌梗死后室壁瘤患者的左心室壁应力,并改善心肌收缩功能.     

应变率成像对急性前壁心肌梗死冠脉介入治疗后左室局部收缩功能的评价

目的运用应变率成像（SRI）技术定量评价急性前壁心肌梗死患者经皮冠状动脉介入术（PCI）前后梗死相关血管供血区域局部收缩功能。方法对62例急性前壁心肌梗死患者行PCI术。血管开通后无复流13例（无复流组）,心肌灌注良好49例（灌注组）。分别于PCI术前、术后3d、1个月及6个月测量左前降支参与供血的9个室壁节段的沿长轴收缩期应变率（SR）并与术前比较,确定异常节段。结果两组各时点sR降低,灌注组术后不同时间点的SR均显著高于无复流组,绝大多数心肌节段SR较术前增加,且随着时间的推移,其SR逐渐增加;无复流组术后3d及1个月除极少数节段SR降低外,其他节段心肌SR与术前无明显差异;术后6个月部分心肌节段SR较术前及术后3d有所增加。结论SRI可动态观察急性前壁心肌梗死PCI术前、术后梗死相关血管供血区域心肌收缩功能,间接评估心肌灌注情况。     

多普勒组织成像技术对PTCA远期疗效判定的应用价值

目的评价经皮腔内冠状动脉成形术(PTCA)及支架置入术对急性心肌梗死患者左室局部心功能的远期影响。方法对40例择期行PTCA及支架置入术的急性心梗患者,应用脉冲多普勒组织成像(PW-DTI)技术检测术前及术后6个月、12个月室壁梗死区域的DTI指标:收缩期峰值速度(Vs)及时间-速度积分(VTI)、舒张早期峰值速度(Ve)及时间-速度积分(VTI)、舒张晚期峰值速度(Va)及时间-速度积分(VTI)与舒张早期峰值速度/舒张晚期峰值速度(Ve/Va),再与20名健康成人作对照分析。结果急性心肌梗死患者术前左室局部舒缩功能指标较对照组显著降低,表现为梗死区域各室壁Vs及VTI、Ve及VTI和Ve/Va均显著降低(P<0.01);急性心梗患者术后6个月、12个月左室局部舒缩功能较术前明显改善,尤其是术后12个月改善更为显著,表现为梗死区域各室壁Vs及VTI、Ve及VTI和Ve/Va均显著增高(P<0.01)。结论PTCA及支架置入术能改善急性心梗患者远期左室局部心功能,且疗效与时间成正相关。     

冠状动脉内支架置入术治疗老年患者复杂冠状动脉病变

目的　探讨经皮冠状动脉腔内支架置入术治疗老年患者复杂性冠状动脉病变的疗效及安全性。方法对 4 5例冠心病患者施行冠状动脉内支架置入术 ,病变血管共 5 8支 ,B型病变 4 9处 ,C型病变 1 3处 ,慢性完全闭塞病变 4处 ,共置入支架 64只。置入左前降支 2 7只 ,左回旋支 1 3只 ,右冠状动脉 2 4只。De Novo支架置入 4 4只 ,Suboptimal支架置入 1 5只 ,Bail-out支架置入 3只 ,再狭窄病变支架置入 2只。结果　术后经冠状动脉造影证实疗效满意 ,支架置入成功率为 98.4 %。术前病变平均直径狭窄 (86.5± 7.8) % ,术后残余直径狭窄 (5 .1± 1 0 .3 ) %。住院期间无亚急性支架血栓形成。 1例出现假性动脉瘤 ,1例在术中及术后出现三次心室颤动 ,4例患者术后心绞痛复发 ,复查冠状动脉造影发现了 3个支架节段血管有再狭窄。结论　对于老年冠心病患者复杂冠状动脉病变 ,经皮冠状动脉内支架置入术是一种安全有效的介入性治疗技术 ,其成功率高 ,并发症发生率低     

二维超声心动图联合M型超声对检测非ST段抬高型心肌梗死室壁运动异常的评估

目的探讨二维超声心动图(2DE)联合M型超声对非ST段抬高型心肌梗死(NSTEMI)室壁运动异常的评估价值。方法选取我院收治的122例NSTEMI患者为研究对象。所有患者首先接受2DE超声检查,对于2DE左心室节段室壁运动异常(2DE-RWMA)阳性的患者联合M型超声检查。最后,所有NSTEMI患者接受冠状动脉造影(CAG)检查。CAG检查在超声心动图后48小时内完成。结果 2DE-RWMA能够检出约53.57%冠状动脉病变,漏诊率约46.43%。2DE-RWMA阳性对三支冠状动脉受累的NSTEMI检出率显著高于三支以下受累的NSTEMI患者(P0.05);2DE-RWMA对冠状动脉狭窄≥90%的检出率显著高于狭窄程度90%的NSTEMI患者(P0.05);2DERWMA对NSTEMI的检出率与受累冠状动脉数量和冠状动脉狭窄程度均呈正比(P0.05);2DE-RWMA阳性患者经M型超声检查发现,WTF-RWMA阳性者左室室壁节段运动幅度和各节段室壁收缩期增厚率明显增加(均P0.05)。结论 2DE联合M型超声能够敏感地发现NSTEMI引起的心肌缺血和左心室室壁运动异常,显著提高NSTEMI的早期检出率。     

组织速度成像评价经皮冠状动脉介入术前后左室局部收缩功能

目的应用组织速度成像(TVI)技术分析经皮冠状动脉介入术(PCI)前后不同时间点心室心肌纵轴方向运动速度、运动位移、应变、应变率变化规律,研究其评价冠心病(CAD)介入治疗疗效的价值。方法对接受PCI治疗的15例冠心病患者于术前、术后1周、术后1个月以及3个月时采用TVI技术检测心室各节段心肌收缩期纵轴方向运动速度及运动位移、组织形变及形变速率,并比较术前及术后不同时间点差异。结果术前、术后定量组织速度成像(QTVI)、组织追踪成像(TTI)、应变(SI)及应变率成像(SRI)曲线各节段收缩期峰值参数随着时间的延长逐渐增高。与术前比较,术后1个月2个节段(前壁基底段与中间段)收缩期峰值速度(SV)、收缩期峰值位移(SD)增高(P<0.05);术后3个月,8个节段(除前间隔心尖段、侧壁心尖段、后间隔心尖段)SV、SD增高更为显著(P<0.05)。术后3个月6个节段(前间隔基底段及中间段、前壁基底段及中间段、后间隔中间段、后壁心尖段)SV、SD与术后1周相比明显增高(P<0.05)。与术前比较,术后1周3个节段(前壁基底段、中间段、心尖段)收缩期最大应变值(S)及SRI的收缩期最大应变率值(SR)增高(P<0.05);术后1个月5个节段(前壁基底段、中间段、心尖段及前间隔基底段、中间段)S、SR增高(P<0.05)。术后3个月9个节段(除侧壁心尖段、后间隔心尖段)S、SR与术前、术后1周相比均明显增高(P<0.05)。结论 TVI技术能准确地定量评价冠心病患者缺血心肌的局部功能,动态观察PCI前、后局部心肌功能变化,可评价PCI的治疗效果。     

主动脉内球囊反搏术(IABP)辅助常温体外循环下成功修补急性心梗后室间隔穿孔1例(附文献复习)

我院近期在常温体外循环下成功地为1例急性心梗后室间隔穿孔的病人施行了室间隔修补术,现将病例报告如下。临床资料 患者男性,71岁,体重80kg,于1995年12月30日突发心前区疼痛,伴胸闷憋气,ECG示前壁,高侧壁心梗,入院后予硝酸甘油静滴无心绞痛发作,1996年1月2日查体心前区Ⅲ～Ⅳ级全收缩期杂音,彩超示左室前壁,侧壁,室间隔心梗,空间隔中部穿孔,面积较小,冠状动脉造影示左冠状动脉起始部及第一对角支远端病变,1996年1月6日患者大便后突发心悸,气     

心肌声学造影对冠状动脉血运重建术心肌灌注的评价研究

目的探讨心肌声学造影（MCE）评估缺血心肌血运重建后心肌灌注的价值。方法 36例缺血性心肌病患者分别予以冠状动脉支架置入术或冠状动脉旁路移植术进行血运重建,在术前、术后早期（〈1个月）、及术后晚期（6～12）个月分别行实时MCE检查,根据造影剂的充盈程度进行评分。将其结果与相应阶段造影（CAG）和（或）冠脉增强CT成像（CTA）结果进行对照分析。结果按16段心肌节段法进行分段分析测量。36例患者576个节段中,运动异常节段247个,MCE结果与治疗前冠脉造影吻合率为89.89%。冠脉血管再通术后早期共有172个节段有改善,与冠状动脉支架置入术或冠状动脉旁路移植术靶血管供血支配区吻合率为78.00%。术后晚期,MCE与冠脉影像结果吻合率为80.56%。结论实时MCE可随访观察冠状动脉再通血运重建缺血心肌血流灌注改善的情况,可尝试用于冠心病血管重建术后的临床随访。     

斑点追踪显像对冠心病经皮冠状动脉介入治疗后的疗效评价简

目的 探讨二维超声斑点追踪显像技术（two-dimensional speckle tracking imaging,2DSTI）评价冠状动脉粥样硬化性心脏病（冠心病）患者经皮冠状动脉介入（percutaneous coronary intervention,pCI）治疗后效果的临床应用价值.方法 经冠状动脉造影（coronary angiography,CAG）证实左前降支狭窄＞75％的40例非心肌梗死患者,分别于PCI治疗前1周内和治疗后3个月获取左心室短轴观二尖瓣环水平、乳头肌水平、心尖水平及心尖四腔观、二腔观,左心室长轴观的高帧频二维超声心动图,应用斑点追踪显像（speckle tracking imaging,STI）软件,检测其相关供血心肌节段的收缩期纵向、径向、圆周峰值应变以及左心室基底部、心尖部旋转角度和左心室整体扭转角度.结果 PCI治疗前应变-时间曲线形态紊乱,多数节段波峰低平.在PCI治疗后3个月,缺血心肌节段的轮廓趋向规则,波峰明显升高.左心室大部分节段纵向收缩期峰值应变较术前明显增加,差异有统计学意义（P＜0.05）.各组左心室短轴收缩期峰值径向应变、圆周应变无明显改善,差异无统计学意义（P＞0.05）.左心室收缩期心尖部最大旋转角度及整体扭转角度均较术前明显升高,差异有统计学意义（P＜0.05）.结论 应用2DSTI可定量评价左心室心肌的局部和整体功能,为冠心病患者PCI治疗后疗效的观察提供一种经济、简便、无创的检查方法.     

冠状动脉慢性完全闭塞病变的临床特点分析

目的讨论冠状动脉慢性完全闭塞的治疗措施及效果。方法入选2010年1月至2013年3月江西省人民医院干部心血管一科住院的冠心病患者138例,冠状动脉造影显示为冠状动脉慢性完全闭塞(CTO)病变。回顾性分析138例CTO患者血运重建治疗措施以及效果。结果 138例CTO患者,共162支慢性完全闭塞血管,主要累及前降支(LAD)52支,回旋支(LCX)27支,左主干(LM)9支及右冠状动脉(RCA)60支。145支慢性完全闭塞血管行经皮冠状动脉腔内成行(PTCA)治疗,130支血管成功支架置入101个。17例患者行冠状动脉旁路移植术(CABG)。结论 CTO临床表现多样,但缺乏特异性,可以选用PTCA及支架术或CABG治疗。     

The effect of coronary artery bypass grafting on left ventricular systolic function at rest: evidence for preoperative subclinical myocardial ischemia

Successful coronary artery bypass grafting (CABG) improves exercise-induced left ventricular (LV) dysfunction in patients with coronary artery disease (CAD), but its potential for improving resting LV function remains controversial. To assess the influence of CABG on LV function at rest, 31 CAD patients without previous myocardial infarction were studied before and 6 months after CABG by radionuclide angiography after all cardiac medicines were withdrawn. No patient had angina or ischemic electrocardiographic changes at rest. In 27 patients with patent bypass grafts, CABG significantly increased LV ejection fraction during exercise (47 +/- 11% before to 63 +/- 9% after operation, p less than 0.001), indicating reduction in exercise-induced LV ischemia. Moreover, LV ejection fraction at rest also increased (55 +/- 9 to 60 +/- 8%, p less than 0.001), with 20 of 27 patients manifesting an increase compared with preoperative values. Eleven of these 20 patients had apparently normal LV function at rest (ejection fraction and regional wall motion) before CABG. LV regional ejection fraction was computed by dividing the LV region of interest into 20 sectors. Regional analysis indicated that improved ejection fraction at rest after CABG occurred in regions developing ischemia during exercise before CABG. In 4 patients with occluded grafts, the ejection fraction at rest was unchanged by CABG globally (59 +/- 8 to 58 +/- 9%, difference not significant) and regionally. Thus, LV global and regional function at rest improved after successful CABG, even in patients with normal global LV ejection fraction and no visually detectable wall motion abnormality before surgery.(ABSTRACT TRUNCATED AT 250 WORDS)     

Usefulness of the ejection fraction response to dobutamine infusion in predicting functional recovery after coronary artery bypass grafting in patients with left ventricular dysfunction

Quantification of dysfunctional but viable myocardium has high prognostic value for improvement of left ventricular (LV) function after coronary artery bypass grafting (CABG). Dobutamine stress echocardiography (DSE) can assess viable myocardium by segmental wall motion changes during stress. However, analysis of wall motion is subjective with only moderate interinstitutional agreement (70%) and frequently overestimates functional improvement after CABG. In contrast, calculation of ejection fraction (EF) is less subjective and allows a more precise quantification of global contractile reserve. The aim of the study was to compare the prognostic value of EF response and segmental wall motion changes during DSE for the prediction of LV functional recovery after CABG. Forty patients underwent DSE before CABG. EF responses were assessed at rest, low-dose dobutamine, and at peak stress using the biplane disk method. Wall motion was scored using a 16-segment 5-point model. Resting radionuclide ventriculography (RNV-LVEF), performed before and 8 ± 2 months after CABG, was used as an independent reference. Five patients were excluded because of perioperative infarction or poor echo images. In 11 of 35 patients, RNV-LVEF recovered >5%. Improvement in EF during dobutamine infusion predicted RNV-LVEF recovery after CABG significantly better than segmental wall motion changes (72% vs 53%, p = 0.03). A biphasic EF response (i.e., improvement in ≥10% at low dose and subsequent worsening at peak stress) had the highest predictive value (80%) for late functional recovery. In conclusion, EF response to dobutamine infusion was superior to segmental wall motion changes in predicting RNV-LVEF recovery after CABG.     

CABG联合自体干细胞移植治疗心肌梗死疗效观察

目的观察冠脉搭桥术（CABG）联合经冠状动脉桥血管及心外膜下注入自体外周血干细胞治疗心肌梗死的疗效。方法 32例冠心病心肌梗死患者,随机分为对照组和观察组,各16例。观察组术前5 d使用重组人粒细胞集落刺激因子皮下注射进行外周血干细胞（PBSC）的动员及扩增。CABG术前24 h进行PBSC的采集和浓缩。两组均在非体外循环下行CABG,观察组在完成血管桥吻合后,经桥血管及心外膜下注入PBSC。术前1周及术后3、6个月采用二维超声心动图和99mTc-MIBI心肌灌注显像检测两组患者左心室射血分数（LVEF）、左心室舒张末期内径（LVEDD）及心肌灌注情况。结果术后3、6个月二维超声心动图检查显示两组患者LVEF、LVEDD均较术前改善,组间比较观察组较对照组改善程度更大（P均〈0.05）。术后6个月99mTc-MIBI心肌灌注显像显示两组患者充盈缺损区域均较术前缩小,观察组较对照组充盈缺损区域缩小程度更明显（P均〈0.05）。结论 CABG联合自体外周血干细胞移植治疗心肌梗死安全可行,患者术后心肌灌注和心功能恢复满意。     

Usefulness of the ejection fraction response to dobutamine infusion in predicting functional recovery after coronary artery bypass grafting in patients with left ventricular dysfunction

Quantification of dysfunctional but viable myocardium has high prognostic value for improvement of left ventricular (LV) function after coronary artery bypass grafting (CABG). Dobutamine stress echocardiography (DSE) can assess viable myocardium by segmental wall motion changes during stress. However, analysis of wall motion is subjective with only moderate interinstitutional agreement (70%) and frequently overestimates functional improvement after CABG. In contrast, calculation of ejection fraction (EF) is less subjective and allows a more precise quantification of global contractile reserve. The aim of the study was to compare the prognostic value of EF response and segmental wall motion changes during DSE for the prediction of LV functional recovery after CABG. Forty patients underwent DSE before CABG. EF responses were assessed at rest, low-dose dobutamine, and at peak stress using the biplane disk method. Wall motion was scored using a 16-segment 5-point model. Resting radionuclide ventriculography (RNV-LVEF), performed before and 8 ± 2 months after CABG, was used as an independent reference. Five patients were excluded because of perioperative infarction or poor echo images. In 11 of 35 patients, RNV-LVEF recovered >5%. Improvement in EF during dobutamine infusion predicted RNV-LVEF recovery after CABG significantly better than segmental wall motion changes (72% vs 53%, p = 0.03). A biphasic EF response (i.e., improvement in ≥10% at low dose and subsequent worsening at peak stress) had the highest predictive value (80%) for late functional recovery. In conclusion, EF response to dobutamine infusion was superior to segmental wall motion changes in predicting RNV-LVEF recovery after CABG.     

叶酸对冠心病患者支架术后血管内皮功能的影响

目的 探讨叶酸能否改善冠心病患者支架术后的血管内皮功能.方法 共184例冠心病患者,在行冠状动脉支架术后,随机分为叶酸治疗（20 mg/d）92例和对照组92例.随访6个月,观察两组同型半胱氨酸水平.以超声测定肱动脉血流介导的舒张功能（FMD）变化来评价血管内皮功能,并观察两组间的差别.结果 叶酸治疗组血浆同型半胱氨酸水平低于对照组[（8.83±3.33）μmol/L比（13.18±5.08）μmol/L,P＜0.01].叶酸治疗后,FMD由（4.72±1.73）%增加至（8.54±1.45）%,P＜0.01.结论 叶酸治疗可能通过降低同型半胱氨酸以外的途径改善血管内皮功能,对介入治疗后的冠心病患者发挥潜在益处.     

Two-dimensional contrast echocardiographic assessment of the time course of regional ischemic myocardial function

The time course of percent fractional area change (%FAC) of the ischemic left ventricular wall as identified by myocardial contrast echocardiography was assessed. Two-dimensional echocardiograms of the left ventricular short axis at the level of the chordae tendineae were recorded in 16 anesthetized open-chest dogs. Myocardial ischemia was produced by occluding the left circumflex coronary artery (LCX) for 30 min, and identified by myocardial contrast echocardiography using aortic root contrast injection. The left ventricular wall in the short-axis view was divided into eight segments. The experiments were completed in nine dogs. The %FAC of the segment which includes the center of the ischemic area was normal before LCX occlusion (35 +/- 6%: mean +/- S.D.), markedly decreased during 30 min of LCX occlusion (-3 +/- 4%) and gradually recovered after coronary reperfusion. However, it was significantly decreased 150 min after reperfusion (8 +/- 9%) (p less than 0.001) compared to that before LCX occlusion. The %FAC of the segment which includes the center of the non-ischemic area was not significantly changed throughout the experiment. In conclusion, 1) the time course of regional ischemic myocardial function could be assessed by the analysis of the %FAC of the ischemic area determined by myocardial contrast echocardiography, 2) the %FAC is significantly decreased 150 min after coronary reperfusion following 30 min occlusion compared to that before coronary occlusion.     

旁路移植术和介入治疗无保护左主干病变的疗效分析

目的:分析无保护左主干病变(ULMCA)经外科旁路移植术(CABG)和冠状动脉介入术(PCI)治疗的临床效果。方法:回顾性分析ULMCA196例,其中PCI95例,CABG105例,比较2组围术期并发症,左心室大小和心功能,主要心血管事件(MACE)。结果:围术期死亡:PCI组4例,占4.4%,CABG组8例,占7.6%;主动脉球囊反搏使用:PCI组12例(13.2%),CABG组23例(22.0%);MACE:PCI组15例(16.5%),CABG组22例(21.0%),P<0.05;平均随访(13±5)个月,PCI组死亡3例,免于MACE77.6%,MACE19例(22.4%),CABG组死亡3例,免于MACE87.6%,MACE12例(12.4%),射血分数改变PCI组1.2%±0.7%,CABG组2.3%±1.1%,P<0.05;左心室舒张末期直径大小变化PCI组(3.5±0.2)mm,CABG组(4.6±0.7)mm,P<0.03,纽约心功能分级PCI组(2.5±0.6)级,CABG组(1.5±0.3)级,P<0.02。结论:PCI和CABG术对ULMCA治疗都有较好的近、远期结果,但围术期PCI疗效优于CABG,对左主干累及分叉病变,CABG则优于PCI。