冠心病诊断中AECG与多层螺旋CT的使用效果,临床诊断学论文.docx
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1、冠心病诊断中AECG与多层螺旋CT的使用效果,临床诊断学论文摘 要: 目的 分析同步12导联动态心电图(AECG)与多层螺旋CT在冠心病(CAD)诊断中的应用价值。方式方法 抽取2021年2月2021年10月我院心血管内科收治的90例疑诊CAD患者,均接受同步12导联AECG、冠状动脉CT成像(CTA)检查,并于15d内行冠状动脉造影(CAG),以CAG结果为标准,分析AECG、CTA对CAD的诊断效能。结果 本组患者CAG阳性54例(华而不实单支血管病变22例、多支病变32例),CAG阴性36例。AECG诊断CAD的敏感度为70.37%、特异度为86.11%、阳性预测值为88.37%、阴性预
2、测值为65.96%。且多支病变者心肌缺血检出率为81.25%,高于单支病变者54.55%(P 0.05)。所有患者均完成CT检查且未出现不良反响,90例患者受检的360支冠状动脉中有21支(5.83%)不可评估,原因包括冠状动脉严重钙化、图像显示欠佳、血管过细且走行迂曲。CTA诊断CAD的敏感度79.63%、特异度为77.78%、阳性预测值为84.31%、阴性预测值为71.79%。AECG、CTA并联试验诊断CAD的敏感度62.96%、特异度为97.22%,特异度显着较二者单独诊断提高(P 0.05);AECG、CTA串联试验,诊断CAD的敏感度90.74%、特异度为69.44%,敏感度显着较
3、二者单独诊断提高(P 0.05)。结论 对CAD患者而言,同步12导联AECG、CTA可分别显示心肌缺血、冠状动脉狭窄情况,二者联合应用可提高临床诊断效能。 本文关键词语: 12导联; 动态心电图; 冠状动脉CT成像; 冠心病; 诊断; Abstract: Objective To analyze the appication value of synchronous 12-leadambulatory electrocardiogram(AECG) and multi-slice spiral CT in the diagnosis of coronary artery disease(CA
4、D). Methods A total of 90 patients with suspected CAD who were admitted to vasculocardiology department of the hospital from February 2021 to October 2021 were enrolled in the study. All patients underwent synchronous 12-lead AECG and computed tomography angiography(CTA). They underwent coronary ang
5、iography(CAG) within 15 days. Taking CAG results as the standard, the diagnostic efficiency of AECG and CTA for CAD was analyzed. Results There were 54 cases with positive CAG(22 cases with single vessel disease, 32 cases with multivessel disease) and 36 cases with negative CAG. The sensitivity, spe
6、cificity, positive predictive value and negative predictive value of AECG for diagnosis CAD were 70.37%, 86.11%, 88.37% and 65.96%, respectively. The detection ratefor myocardial ischemia in multivessel disease patientswas higher than that in singlevessel disease patients(81.25% vs 54.55%)(P 0.05).
7、All patients underwent CT, and there was no adverse reactions. In the the 360 coronary arteries of the 90 patients, there were 21 cases(5.83%) that could not be evaluated. The causes included severe coronary calcification, poor image display, too smallblood vessels and tortuous coronary traveling. T
8、he sensitivity, specificity, positive predictive value and negative predictive value of CTA for diagnosis CAD were 79.63%, 77.78%, 84.31% and 71.79%, respectively. The sensitivity and specificity of parallel test with AECG and CTA for diagnosis of CAD were 62.96% and 97.22%, respectively. The specif
9、icity was significantly higher than that of any one of the two(P 0.05). The sensitivity and specificity of serial test with AECG and CTA for diagnosis of CAD were 90.74% and 69.44%, respectively. The sensitivity was significantly higher than that of any one of the two(P 0.05). Conclusion For CADpati
10、ents, synchronous 12-lead AECG and CTA can respectively show myocardial ischemia and coronary artery stenosis. Their combination application can improve clinical diagnostic efficiency. Keyword: 12-lead; Dynamic Electrocardiogram; Computed Tomography Angiography; Coronary Artery Disease; Diagnosis; 2
11、021年中国心血管病报告显示,国内冠心病(coronary artery disease,CAD)患者超1100万,华而不实城市、农村地区CAD死亡率为110.67/10万和110.91/10万,并预测今后10年,CAD患病率与死亡率仍将进一步增长,且发病年龄逐步降低1。及早明确CAD的诊断具有重要意义,冠状动脉造影(coronary arteriongraphy,CAG)是公认诊断的金标准,但其费用昂贵、有创,对设备、人员及技术要求高,推广应用有一定局限,故需求无创性的检查方式方法进行CAD诊断一直备受关注2。同步12导联动态心电图(ambulatory electrocardiograp,
12、AECG)可借助数字记录、调频系统及调幅技术确保ST段移位显示愈加可靠,继而准确判定心肌缺血情况3;而多层螺旋CT具有高时间、空间分辨率,结合多种重建技术可有效评价冠状动脉狭窄程度4,二者均为价格相对低廉、操作简便、无创的检查手段。现重点分析同步12导联AECG与多层螺旋CT在CAD诊断中的应用价值。 1、 资料与方式方法 1.1、 一般资料 抽取2021年2月2021年10月期间我院心血管内科收治的90例疑诊CAD患者,年龄 20岁,入院时均伴有因胸痛、胸闷、呼吸困难、发热、出汗等疑似CAD相关异常感觉和状态,入院后均接受同步12导联AECG、多层螺旋CT检查(影像学资料详实),于15d内行
13、CAG诊治并获得最终诊断结果;均已排除确诊的急性心肌梗死与其他类型心脏病(如瓣膜性心脏病、先天性心脏病、心肌病、风湿性心脏病等)者,合并严重的水电解质失衡、心律失常、冠脉钙化者,影像学检查前48h曾可能干扰ST段药物(洋地黄、 受体阻滞剂等)者,既往接受冠脉支架植入术或冠脉搭桥手术者,对碘造影剂过敏及随访资料欠缺者。华而不实男55例,女35例,年龄2975岁,平均(56.28 12.34)岁,合并高血压者21例、糖尿病者12例、高血脂症者9例,有长期吸烟史者35例。本研究获得我院伦理委员会审核通过。 1.2 、方式方法 1.2.1、 AECG检查: 所选仪器为国产康泰TLC-4000同步12导
14、联AECG检测仪。检查前充分告知各项注意事项,酒精擦拭皮肤脂肪后,将肢体导联、加压肢体导联电极分别粘贴于对应体表位置,患者配戴检查记录仪,行24h心电信号连续监测,期间进行多种体位心电图记录以排除体位引起ST段变化,并采取人机对话方式以避免产生伪差或干扰,24h后取下记录仪。计算机自动分析ST段移位情况,纸速25min/s,增益10mm/mv。 1.2.2、 CT检查: 所选仪器为美国GELight Speed 64层螺旋CT扫描机。采用回首性心电门控技术行冠状动脉CT成像(computed tomography angiography,CTA),检查前确保心率稳定在70次/min及下面。取仰
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