Correlation of red cell distribution width with the severity of coronary artery disease: a large Chinese cohort study from a single center

Background It has been reported that increased red blood cell width (RDW) is a marker associated with the presence and adverse outcomes of various cardiovascular diseases.The aim of the present study w...     

双源CT冠状动脉造影对老年与中年冠状动脉狭窄的评价作用研究

抽取我院行双源CT冠状动脉造影（DSCTA）检查确诊为冠心病的100例患者分成老年组53例和中年组47例。DSCTA使用曲面重建和最大密度投影等后处理重建技术,以冠状动脉X线造影检查结果为标准,在段的基础上评价冠脉狭窄程度≥50％的各项指标及差异。结果显示,DSCTA对老年组和中年组冠状动脉的可评价率分别为97．0％、98．6％,两组比较差异无统计学意义（P〉0．05）。老年组和中年组冠状动脉狭窄≥50％节段发生率分别为12．6％、9．0％,多支血管病变发生率分别为28．3％、6．4％,两组比较差异均有统计学意义（P〈0．05）。DSCTA评价老年组冠状动脉狭窄程度〉150％的敏感度、特异度、阳性预测值、阴性预测值依次为92．3％、98．0％、88．0％、98．9％;评价中年组的各项指标依次为96．0％、99．0％、90．6％、99．6％;两组比较差异无统计学意义（P〉0．05）。提示,DSCTA可作为冠心病的有效筛查和评价方法;评价冠状动脉狭窄的各项指标随着年龄增长有下降趋势,但差异无统计学意义。     

载脂蛋白M与冠心病患者冠状动脉病变的关系

选择行冠状动脉造影术的患者137例,根据造影结果分为冠心病组（92例）和对照组（45例）,分析患者载脂蛋白M（apoM）水平与冠状动脉狭窄程度的关系。结果示应用协方差分析,校正了性别、年龄、体重指数的影响后,冠心病组apoM水平低于对照组（P〈0．05）;逐步相关分析示冠心病组的apoM水平与体重指数呈正相关（r=0．65,P〈0．01）,与血浆总胆固醇（r=-0．53,P〈0．01）及低密度脂蛋白胆固醇（r=-0.42,P〈0．01）呈负相关,与冠状动脉狭窄积分呈负相关（r=-0.62,P〈0．01）。提示apoM水平降低可能与冠心病的发生发展有关。     

320排CT冠状动脉成像与经导管冠状动脉造影诊断冠脉狭窄的对比分析

目的 通过对比320排CT冠状动脉成像术（CTA）与经导管冠状动脉造影（CAG）的结果,探讨其评估冠脉狭窄性病变的价值.方法 搜集100例患者的320排CTA的完整资料,以冠状动脉造影（CAG）的结果作为金标准进行对比,评价冠状动脉不同节段病变诊断的一致性及对冠脉狭窄程度诊断的差异性.结果 100例患者中冠状动脉直径≥2mm共有1 423个节段,在CTA检查中能够满足诊断要求的共有1 269个节段.320排CTA显示轻度狭窄（管腔内径减少＜50％）的敏感性、特异性、阳性预测值、阴性预测值分别为97.1％、84.4％、59.3％、94.4％,中度狭窄组（≥50％）的敏感性、特异性、阳性预测值、阴性预测值分别为87.4％、94.6％、75.2％、84.6％,重度狭窄组（≥75％）的敏感性、特异性、阳性预测值、阴性预测值分别为79.7％、83.6％、82.9％、92.8％,与CAG结果对比,320排CTA对轻、中度狭窄的敏感性、特异性的评价均较高.结论 320排冠状动脉成像术是诊断冠心病的一种安全、可靠的检查方法,对冠脉轻中度狭窄的敏感性高于CAG,对中重度狭窄的特异性较高.     

核素心肌灌注断层显像检查与冠状动脉造影术对冠心病的诊断价值

[目的 ]评价99mTc甲氧基异丁基异腈心肌灌注断层显像检查诊断冠心病的准确性 ,并对心肌灌注断层显像检查与冠状动脉造影术所显示的心肌损害程度间的关系进行分析 .[方法 ]对 10 3例冠心病患者行99m Tc 甲氧基异丁基异腈心肌灌注断层显像检查和冠状动脉造影检查 ,对其结果进行对比分析 .[结果 ]冠状动脉造影术对冠心病的诊断阳性率为 96 % ,假阴性有 3例 ;心肌灌注断层显像检查对冠心病诊断的敏感性较高 ,为 94 % ,特异性较低 ,为72 % .心肌灌注断层显像检查对单支病变血管的检出灵敏度高于双支病变及 3支病变 .心肌灌注断层显像检查对前降支的检出灵敏度为 86 % ,左旋支为 6 2 % ,右冠状动脉为 82 % .心肌灌注断层显像检查与冠状动脉造影检查的结果之间存在明显差异 .[结论 ]冠状动脉造影检查可了解冠状动脉血管树的解剖 ,心肌灌注断层显像检查则从病理生理学角度提供心肌灌注和存活状况的信息 ,两者不能相互替代 ,结合此 2种检查可使冠心病诊断的准确性得到进一步的提高     

C反应蛋白与代谢综合征合并冠状动脉疾病关系的研究

目的探讨代谢综合征合并冠状动脉疾病与C反应蛋白之间的关系。方法2004年7月-2006年7月期间选择经冠脉造影确诊冠心病患者356例，其中按照中国代谢综合征诊断标准分为代谢综合征组与非代谢综合征组。对两组进行C反应蛋白水平测定。两组的冠造和C反应蛋白进行组内和组间统计学分析。结果不同C反应蛋白浓度下冠脉病变类型比较表明，随着C反应蛋白水平的升高，代谢综合征组的冠脉病变严重程度加重差异有显著统计学意义（P〈0．05）。结论C反应蛋白可作为预测代谢综合征合并冠状动脉疾病患者冠状病变严重程度的预测指标。     

QT离散度与冠状动脉病变程度关系的探讨

目的探讨冠心病患者冠状动脉狭窄程度及范围与QT离散度(QTd)及校正QT离散度(QTcd)变化的关系及其临床意义。方法将已行冠状动脉造影(CAG)的64例患者,按冠脉狭窄程度分为中度狭窄组(造影示病变狭窄>50%~70%)18例、重度狭窄组(病变狭窄>70%)20例;按冠脉血管狭窄支数分为单支病变组16例、2支以上病变组22例。将造影示狭窄<50%,临床已排除冠心病的26例作为对照组。结果重度狭窄对QTd及QTcd影响明显(P<0.005),而中度狭窄对QTd及QTcd则无明显影响(P>0.05);2支以上血管病变对QTd及QTcd影响明显(P<0.05),单支血管病变对QTd及QTcd则无明显影响(P>0.05)。结论冠心病患者QTd及QTcd与冠脉病变严重程度及血管病变范围有关,心肌缺血及损伤程度越重,其QTd及QTcd延长越明显,是评价冠心病患者心肌缺血及损伤的一个有意义指标。     

血清睾酮在中年男性冠心病患者中的表达及意义

目的:探讨中年男性冠心病患者的血清睾酮水平变化及其与冠状动脉狭窄程度的关系。方法:检测87例中年男性冠心病患者(包括稳定型心绞痛、不稳定型心绞痛及急性心肌梗塞)血清睾酮浓度。所有患者行冠脉造影,用Gensini冠脉评分评估患者冠脉狭窄程度。冠脉狭窄低于50%的患者纳入对照组。结果:稳定型心绞痛组,不稳定型心绞痛组及急性心肌梗塞组血清睾酮水平(分别为488.2±96.8ng/dL,411.6±128.6ng/dL,365.3±116.6ng/dL)显著低于对照组(562.8±110.2ng/dL)(P均<0.05)。稳定型心绞痛组,不稳定型心绞痛组及急性心肌梗塞组三组比较,急性心肌梗塞组血清睾酮水平最低,不稳定型心绞痛组居中,稳定型心绞痛组最高(P均<0.05)。血管造影Gensini得分与血清睾酮水平显著相关(n=87,r=-0.513,P<0.05)。结论:中年男性冠心病患者血清睾酮呈低水平状态,且与冠脉狭窄程度呈负相关。     

盐阈值与冠心病病变严重程度的相关性研究

目的 研究盐阈值与冠心病病变严重程度之间的相关性.方法 采用横断面设计,将2017年10月至2018年1月大坪医院心内科经冠状动脉造影确诊的198例冠心病患者作为冠心病组,选择性别和年龄与冠心病组患者相匹配的193例冠状动脉造影结果 未达到美国心脏协会冠心病诊断标准的患者作为对照组.根据冠脉病变支数将冠心病组进一步分为单支、双支和三支病变组,根据Gensini积分评估冠脉病变严重程度.应用NaCl溶液测定患者的盐阈值.比较各组患者盐阈值的差异,分析盐阈值与冠心病病变严重程度之间的相关性.结果 冠心病组盐阈值显著高于对照组[(0.75 ±0.21) ％ vs (0.59 ± 0.18) ％,P＜ 0.05],且随着冠状动脉病变支数的增加,盐阈值显著升高.Logistic回归模型控制冠心病的传统危险因素后发现盐阈值升高的患者冠心病风险增高(OR = 3.012,P＜ 0.05) .冠心病组中,盐阈值与冠脉病变严重程度(Gensini积分) 成正相关(r = 0.623,P＜ 0.01) .结论 盐阈值升高是冠心病的风险因素,且盐阈值水平与冠脉病变严重程度呈正相关关系.     

组织多普勒检测心肌工作指数在冠心病中的临床应用

目的:探讨利用组织多普勒(TDI)检测心肌工作指数(MPI)评估冠状动脉病变程度与心脏整体功能状态的关系。方法:拟诊冠心病患者122例,行常规各项心脏超声指标及MPI检测,根据冠状动脉造影(CAG)结果,按冠脉病变Gensini积分分为4组,即正常组(0分,n=15)、轻度狭窄组(1～40分,n=56)、中度狭窄组(41～80分,n=56)和重度狭窄组(≥81分,n=9)。观察Gensini积分与MPI有无相关性。结果:重度狭窄组、中度狭窄组MPI指数较其它组高,重度狭窄组高于其他各组,Gensini积分与左、右心室MPI存在正相关关系(r=0.72,P<0.01;r=0.68,P<0.01)。结论:MPI与冠状动脉病变程度有关,冠状动脉狭窄程度越重,MPI升高越明显,提示冠心病患者随着冠脉病变严重程度的增加,心脏整体功能下降。     

首次冠状动脉造影患者糖代谢分布及血管造影特点分析

目的调查首次冠状动脉造影人群的糖代谢分布,分析血管造影特点。方法对553例疑似冠心病患者测量形体参数,检验血液生化指标,进行冠状动脉造影。用1999 WHO糖尿病诊断标准评价糖代谢分布,美国心脏病协会规定的冠状动脉狭窄程度评判标准和Gensin i评分系统对造影结果进行定量评价,根据造影结果及糖代谢状态对患者进行分组比较。结果研究对象平均年龄60岁(60.1±9.7),277例(50.1%)糖耐量正常,276例(49.9%)糖代谢异常,其中糖调节受损127例(23.0%),新诊断糖尿病61例(11.0%),已知糖尿病88例(15.9%)。冠心病组中糖代谢异常者多于非冠心病组(56.4%和34.5%,P<0.05)。糖尿病组多支病变发生率和Gensin i积分均高于非糖尿病组,分别为63.8%和44.1%,15分和20分(P均<0.05)。结论冠状动脉造影人群糖代谢异常多见,糖尿病患者多支病变发生率和冠状动脉狭窄程度高于非糖尿病患者。     

Urinary albumin excretion rate is correlated with severity of coronary artery disease in elderly type 2 diabetic patients

Background  Coronary heart disease is the main complication of type 2 diabetes mellitus; its incidence is closely related to microalbuminuria. The aim of this study was to investigate the correlation between the urinary albumin excretion rate and the incidence and severity of coronary heart disease in elderly type 2 diabetes mellitus patients.

Methods  A total of 612 hospitalized type 2 diabetes mellitus patients aged 60 years or older, who were given coronary angiography for diagnosis of possible coronary heart disease, participated. Their urinary albumin excretion rate was measured, and the severity of coronary artery stenosis was quantified with the Gensini scoring system to analyze the incidence of coronary heart disease and the severity of coronary artery stenosis. The optimal urinary albumin excretion rate predictive value for coronary heart disease incidence in elderly type 2 diabetes mellitus patients was determined.

Results  The incidence of coronary heart disease, the number of patients with coronary vascular disease and the Gensini scores were significantly different between the microalbuminuria group and the normal albuminuria group (P <0.05). The urinary albumin excretion rate was independently correlated with the occurrence of coronary heart disease in elderly type 2 diabetes mellitus patients (odds ratio (OR) =1.058, P <0.0001, 95% confidence interval (CI): 1.036–1.080). Urinary albumin excretion rate and the Gensini score were independently correlated in elderly type 2 diabetes mellitus patients (β=0.476, P <0.0001). The best predictive value of urinary albumin excretion rate was 10.45 μg/min for elderly type 2 diabetes mellitus patients. The area under the curve was 0.764, with a sensitivity and specificity of 70.0% and 72.2%, respectively.

Conclusions  The occurrence of coronary heart disease in elderly type 2 diabetes mellitus patients with microalbuminuria was higher than that in patients with normal albuminuria, and the severity of the disease also increased in patients with microalbuminuria. In elderly type 2 diabetes mellitus patients, urinary albumin excretion rate was positively correlated with the incidence and severity of coronary heart disease and was also an independent factor contributing to coronary heart disease.

     

Comparison of glycemic variability and glycated hemoglobin as risk factors of coronary artery disease in patients with undiagnosed diabetes

Background  The role of chronic hyperglycaemia as a coronary artery disease (CAD) risk factor is well-known, and the glycemic variability is still a matter of debate. The aim of this study was to investigate the association of admission glycemic excursion and hemoglobin A_1c (HbA_1c) with the presence and severity of CAD in patients with undiagnosed diabetes mellitus (DM).

Methods  We studied 286 newly diagnosed DM patients without prior revascularization undergoing coronary angiography for suspected ischaemic chest pain. Patients were grouped into those with CAD and without CAD according to angiographic results. The severity of CAD was assessed using the Gensini score. Glycemic variability, indicated as the mean amplitude of glycemic excursions (MAGE), was determined by a continuous glucose monitoring system. Serum levels of HbA_1c and high-sensitive C-reactive protein (hs-CRP) as well as plasma concentrations of fasting glucose, lipids and creatinine were measured in all patients. Predictors of CAD were determined using multivariate Logistic regression model and receiver-operating characteristic (ROC) curves.

Results  The newly diagnosed DM patients with CAD were older, and more were male and current cigarette smokers compared with the patients without CAD. The CAD group had significantly higher levels of MAGE and HbA_1c. Individuals with high levels of HbA_1c (≥7%) or MAGE (≥3.4 mmol/L) had also significantly higher CAD prevalence. Logistic regression analysis revealed that high MAGE level and high HbA_1c level were independent predictors for CAD. The area under the receiver-operating characteristic curve for MAGE (0.606, P=0.005) was superior to that for HbA_1c (0.582, P=0.028). Gensini score closely correlated with age, MAGE, HbA_1c, hs-CRP, creatinine and total cholesterol. Multivariate analysis indicated that age (P <0.001), MAGE (P <0.001), HbA_1c (P=0.022) and hs-CRP (P=0.005) were independent determinants for Gensini score.

Conclusions  Both admission glycemic excursion and chronic hyperglycaemia are associated with the severity of CAD in newly diagnosed DM patients. MAGE displays a significant value in predicting CAD in patients with undiagnosed diabetes even more than HbA_1c.

     

床旁无创积分法用于初步诊断冠心病的临床研究

目的评价床旁无创积分法初步诊断冠心病的有效性。方法2008年9月至2010年10月入选我院612例疑诊冠心病患者（男性343例,女性269例）,平均年龄（55±7）岁。对所有患者均详细询问病史和体格检查并检查静息心电图、血生化、平板运动试验和（或）12导联动态心电图,同时进行64排或256排冠状动脉CT成像检查或冠状动脉造影。采用Delphi法,通过对专家多次问卷捌查筛选出评价冠心病可能性的临床指标（性别、年龄、吸烟史、饮酒史、高血压病、高脂血症、糖尿病、典型胸痛及心电图、平板运动试验或动态心电图等）;依据专家做出的危险分层、判断依据水平和熟悉程度量化各指标,其中大量吸烟、糖尿病、典型胸痛、平板运动试验阳性和动态心电图阳性为极高危,积8分;三项血脂异常和合并左心室肥厚的高血压为高危,积6分;≥40岁男性、中等量吸烟、两项血脂异常、血糖异常、大量饮酒、心电图阳性和绝经后女性为中危,积4分;少量饮酒和一项血脂异常为低危,积2分。对所有患者进行床旁无创积分法评价,并与多排螺旋CT或冠状动脉造影结果比较,评价该积分法的价值。结果积分≥24用于初步诊断冠心病标准的敏感性为89．95％,特异性为85．63％,阳性预测值94．03％,但准确性为88．73％。积分≤14用于初步排除冠心病标准的敏感性为93．10％,特异性为82．86％,阴性预测值达98．09％,但准确性为84．80％。准确性均低于多排螺旋CT或冠状动脉造影（均P〈0．05）。结论本床旁无创积分法可作为初筛冠心病的一种方法,且还有待进一步完善。     

64排CT测量心外膜脂肪组织体积与冠心病的相关性

 目的  评价心外膜脂肪组织(epicardial adipose tissue,EAT)体积与冠心病的存在及严重度的相关性。 方法  纳入同期行64排CT (computed tomography,CT)冠状动脉成像及经皮冠状动脉造影的疑似冠心病患者201例。通过CT测量EAT体积和冠状动脉钙化积分(coronary artery calcium,CAC)。根据冠脉造影结果进行CAGE≥20、CAGE≥50及Gensini评分,再根据评分确定冠心病的程度和严重性。通过统计学方法分析EAT体积值与冠心病的相关性。 结果  根据冠状动脉造影结果分为正常组(108例)及冠心病组(93例)。冠心病组EAT体积平均值明显大于正常组［(135.36±45.36) cm3 vs. (88.56±40.64)cm3］,两组相比差异有显著统计学意义(P=0.004),而体质量指数(BMI)及腰围(WC)在两组间无统计学差异。在多因素Logistic回归分析中,在调整了年龄、性别、吸烟、饮酒以及BMI因素后,EAT体积与冠心病和CAC显著相关(P=0.009)。在线性回归分析中,EAT体积与CAGE≥20、CAGE≥50和Gensini评分显著相关(P<0.05)。并且随着EAT体积的增加,冠心病的严重程度随之增加(P<0.05)。 结论  EAT体积与冠心病的存在和严重程度相关。EAT可以作为冠心病风险的预测因子。     

冠状动脉心脏病伴有糖尿病患者的心绞痛特点分析

目的 提高对冠状动脉心脏病(冠心病)合并糖尿病患者的心绞痛特点的认识.方法 回顾性分析1996年1月1日至2007年1月1日行冠状动脉造影的患者4873例,分为糖尿病组和非糖尿病组,记录胸痛发作的症状.以冠状动脉造影为金标准,将胸痛症状与冠状动脉造影结果比较,分析胸痛症状对诊断冠状动脉狭窄的敏感性、特异性、阳性预测值和阴性预测值.结果 4873例研究对象中,冠状动脉明显狭窄的糖尿病患者1431例,表现为胸痛1组症状(非心源性胸痛)187例、2组症状(不典型心绞痛)492例及3组症状(典型心绞痛)752例.冠状动脉明显狭窄非糖尿病者2056例,表现为非心源性胸痛、不典型心绞痛和典型心绞痛的患者分别为297例、735例和1024例.糖尿病和非糖尿病组之间比较,无论是非心源性胸痛、不典型心绞痛和典型心绞痛,对于冠状动脉明显狭窄的诊断,阳性预测值和阴性预测值差异均有统计学意义,敏感性和特异性差异无统计学意义.临床症状对于冠心病诊断的准确性,胸痛3组症状优于2组症状,2组症状优于1组症状.在非糖尿病组,冠状动脉狭窄的支数与心绞痛的表现类型密切相关(P＜0.01),而在糖尿病组,冠状动脉狭窄的支数与心绞痛的表现类型相关不明显(P=0.333).结论 典型心绞痛对于冠心病诊断的准确性较高.在非糖尿病患者中,胸痛特点能反映冠状动脉病变严重程度.     

Impact of uncontrolled blood pressure on diagnostic accuracy of coronary flow reserve for detecting significant coronary stenosis in hypertensive patients

Background Impaired coronary flow reserve (CFR) in patients with hypertension may be caused by epicardial coronary stenosis or microvascular dysfunction. Antihypertensive treatment has been shown to improve coronary microvascular dysfunction. The aim of this study was to evaluate the impact of uncontrolled blood pressure (BP) on diagnostic accuracy of CFR for detecting significant coronary stenosis.

Methods A total of 98 hypertensive patients scheduled for coronary angiography (CAG) due to chest pain were studied. Of them, 45 patients had uncontrolled BP (defined as the office BP ≥140/90 mmHg (1 mmHg=0.133 kPa) in general hypertensive patients, or ≥130/80 mmHg in hypertensive individuals with diabetes mellitus), and the remaining 53 patients had well-controlled BP. CFR was measured in the left anterior descending coronary artery (LAD) during adenosine triphosphate-induced hyperemia by non-invasive transthoracic Doppler echocardiography (TTDE) within 48 hours prior to CAG. Significant LAD stenosis was defined as >70% luminal narrowing. Diagnostic accuracy of CFR for detecting significant coronary stenosis was analyzed with a receiver operating characteristic analysis.

Results CFR was significantly lower in patients with uncontrolled BP than in those with well-controlled BP (2.1±0.6 vs. 2.6±0.9, P <0.01). Multivariate linear regression analysis of the study showed that the value of CFR was independently associated with the angiographically determined degree of LAD stenosis (β= –0.445, P <0.0001) and the presence of uncontrolled BP (β= –0.272, P=0.014). With a receiver operating characteristic analysis, CFR <2.2 was the optimal cut-off value for detecting LAD stenosis in all hypertensive patients (AUC 0.83, 95%CI 0.75–0.91) with a sensitivity of 75%, a specificity of 78%, and an accuracy of 77%. A significant reduction of diagnostic specificity was observed in patients with uncontrolled BP compared with those with well-controlled BP (67% vs. 93%, P=0.031).

Conclusions CFR measurement by TTDE is valuable in the diagnosis of significant coronary stenosis in hypertensive patients. However, the diagnostic specificity is reduced in patients with uncontrolled BP.

     

冠心病合并代谢综合征冠脉特征及对血运重建的影响

目的探讨冠心病(Coronary artery disease,CAD)合并代谢综合征(Metaolic Suyndrome,MS)的冠脉病变特征及对血运重建的影响。方法根据冠脉造影结果,将348例冠心病患者分为CAD合并MS组及单纯CAD组,分析比较两组间冠脉病变的评分及多支病变、左主干(LM)病变、弥漫长病变、分叉病变、急慢性闭塞病变的比例和接受支架术比例、平均支架数、支架平均长度、靶血管内径及推荐冠脉搭桥术的比例。结果CAD病人MS患病率为34.5%,男女分别为33.3%、37.0%,MS组冠脉病变左回旋支(LCX)及右冠脉(RCA)平均评分、冠脉总评分、多支血管病变的比例、RCA弥漫长病变比例、LCX及RCA分叉病变比例显著高于单纯CAD组,推荐血运重建及行搭桥术比例MS组显著高于单纯CAD组(70.0%vs 57.9%、16.7%vs 5.3%),LM病变、急慢性闭塞病变及行支架术的比例两组差异无显著性,置入支架平均数及总长度MS组高于单纯CAD组,平均支架长度及靶血管平均内径两组差异无显著性。结论CAD合并MS组冠脉病变严重程度、复杂程度及对血运重建的需求显著增加,需要合理的血运重建策略。     

超声二次谐波心肌声学造影与冠状动脉造影的对比分析

目的 :对比研究超声二次谐波心肌声学造影 (MCE)与冠状动脉造影 (CAG)对冠心病的诊断价值。方法 :静脉注射声学造影剂利声显 (levovist)进行超声二次谐波心肌声学造影 ,按冠脉支配区域将左心室 9段分法进行心肌灌注记分 ,分值与冠脉狭窄程度比较分析。结果 :当心肌灌注MCE分值为 0时 ,相应冠脉狭窄 >85 %的可能性为72 .4 % ,而MCE分值为 1时 ,相应冠脉狭窄 <85 %的可能性为 85 .9% ,冠脉狭窄各组之间MCE分值有显著差异 ,P值均 <0 .0 1～ 0 .0 0 1。结论 :MCE能较准确地反映心肌血流灌注 ,从而判断冠脉病变的程度和部位 ,可作为冠脉造影筛选、补充以及冠脉血运重建疗效判断的一个有效的方法     

CT冠状动脉造影与腺苷负荷心肌灌注显像诊断冠心病的对比研究

目的 以传统冠状动脉造影(CAG)结果为参照,对比CT冠状动脉造影(CTCA)与腺苷负荷心肌灌注显像(MPI)诊断冠心病的准确性,并探讨两者间的关系.方法 56例怀疑或诊断为冠心病的患者,3周内接受CTCA、腺苷负荷MPI及CAG检查,CTCA将患者分为无冠脉病变组、非阻塞性冠脉病变组(冠脉狭窄<70%)及阻塞性冠脉病变组(冠脉狭窄≥70%),分别对比评价两种无创检测冠心病方法 的特点.结果 CTCA发现5例无冠状动脉粥样硬化,19例非阻塞性冠脉病变,32例阻塞性冠脉病变.腺苷负荷MPI提示26例未见异常,18例显示不可逆性的心肌灌注缺损,29例可逆性心肌灌注缺损.以CAG为对照,CTCA检测冠心病的敏感性为100%,特异性为55.6%,阳性预测值为92.2%,阴性预测值为100%;而腺苷负荷MPI检测冠脉病变≥70%的病变,敏感性为78.6%,特异性为71.4%,阳性预测值为73.3%,阴性预测值为76.9%.结论 CTCA与腺苷负荷MPI分别从动脉粥样硬化的形态学与心肌缺血的功能学方面给冠心病的诊断提供了较准确的信息,两者相辅相成,是无创的、全面的诊断冠心病的有力工具.