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V7、V8、V9导联ST段抬高在急性下壁心肌梗死中的临床意义

发布时间:2018-06-23 15:37

  本文选题:梗死相关动脉(IRA) + ST段抬高型心肌梗死(STEMI) ; 参考:《吉林大学》2013年硕士论文


【摘要】:目的:研究的目的是结合冠脉造影以及CPK MB、EF等辅助检查,评价后壁导联(V7,V8和V9)ST段抬高在诊断急性正后壁心肌梗死中的作用。 背景:正后壁心肌梗死很难通过标准12导联心电图诊断,尤其是在急性期内,它可以独立发生,或常与下壁心梗相关。后壁导联V7,V8和V9经常被忽视,但一些研究人员认为,这些导联提供的心电图信息有助于诊断下壁、正后壁心肌梗死。标准12导联与后壁导联心电图在下壁心肌梗死中可以明确诊断犯罪血管。后壁导联(V7, V8和V9)ST段抬高常见于后外侧壁心肌梗死,这通常伴有左回旋支闭塞,大面积梗死区,再梗死、梗死后心绞痛等并发症及高死亡率。心电图是主要的诊断工具胸痛患者的诊断和初步评估。心电图记录是简单,方便,廉价的床头的工具,它使梗死面积的想法,预后和本地化的心外膜冠状动脉闭塞,心肌梗死负责。它是生理评估心脏传导的黄金标准测试。诊断AMI是基于ST-T改变,至少2个连续的线索或新的左束支传导阻滞(LBBB)的存在。急性心肌缺血的心电图表现(在左心室肥厚及左束支传导阻滞的情况下):ST段抬高的ST段抬高点,等于或大于0.2mV的男人;切断或等于0.15mV在J点在两个相邻导女性胸导联和/或肢体导联0.1毫伏。ST段压低和T波改变:新的水平或向下倾斜ST段压低或等于0.05mV在连续的线索:和/或T反转等于或大于0.1mV在相邻两个导与著名的R波或R/S比值1。冠脉结扎后不久,串行心电图改变检测缺血区面临的线索。缺血的心电图改变取决于有3个等级:RS配置(胸导联)I级缺血:高大对称的T波无ST段抬高二级缺血:ST段抬高无QRS波群的变化III级缺血:ST段抬高没有S波与QRS波群的终端部分的失真;对于QR配置(肢体导联)I级:无ST段抬高的高大对称的T波二级:ST段抬高,J点出现在R波振幅(J点/R波率0.550%)III级:ST段抬高,出现J点或等于50%的R波振幅(J点/R波比值0.5)。一个新的ST段的偏差甚至只有0.05毫伏缺血仍然是一个重要而具体的措施和可能影响预后。T波倒置的存在导致缺血具有良好的敏感,但有具体的,除非它被标记(0.3MV)ST段抬高0.1mV在至少两个相邻导联有90%左右的灵敏度。心电图结果是进一步的测试,如心脏生物标志物和冠状动脉造影证实。冠状动脉造影术是一种微创手术,用于诊断闭塞,狭窄,再狭窄,血栓形成或在冠脉循环动脉瘤扩大。这是心外膜血管阻塞的罪魁祸首确认的金标准诊断工具。然而,冠状动脉造影没有提供有关的动脉的墙壁和严重的动脉粥样硬化不侵犯动脉壁可能无法检测到的信息。 研究方法:研究列入患者共121例(男102例,女19例),平均年龄58.74±12岁。患者入院前有持续超过30分钟的胸痛,肌酸激酶(CK-B)升高至少大于上限的两倍(正常值:0-3.5ng/ml),心电图示下壁导联(II,III和aVF导联)中至少有2个导联出现ST段抬高0.1mV (1mm),后壁导联(V7,V8,V9)ST段抬高0.05mV (0.5mm),冠状动脉造影显示在LCX或RCA中,出现血管的完全闭塞或严重狭窄超过70%。将患者分为两组:A组患者心电图为后壁导联的ST段抬高,而B组后壁导联无ST段抬高。入选标准包括胸痛持续超过30分钟,在入院前,海拔肌酸激酶(CK-MB)大于上限的两倍(正常:0-3.5ng/ml),心电图显示ST段抬高0.1毫米至少2个下壁导联(Ⅱ,Ⅲ,AVF),ST段抬高0.05毫米后壁导联V7,V8,V9,冠状动脉造影显示单船要么LCX或完全闭塞或严重狭窄超过70%RCA。排除标准包括缺乏ST段抬高0.1mV的下壁导联(Ⅱ,Ⅲ,AVF),下壁心肌梗死患者不必后壁导联(2013V9)估计,既往急性心肌梗死,冠状动脉搭桥手术或经皮冠状动脉介入治疗前,目前住院治疗,最近左束支传导阻滞或心电图左心室肥厚的证据,并显着狭窄,LCX和RCA或三支血管病变,因此,一个单一的梗死相关动脉无法定义。 结果:A组的平均年龄为60.00±0.05(5070岁),B组的平均年龄为57.65±12.86(45至70岁)。这种疾病是很常见的男性比女性(83.47%比16.53%)。下壁心肌梗死心电图ST段抬高铅III II B组患者常常伴有较A组患者(N=72,59.5%的安慰剂组n=19,15.7%,P=0.0001),而ST段抬高II III主张A组患者比B组患者(N=22,18.2%,安慰剂组n=8,6.6%,P=0.0001)。显示CPK-MB值(90.12±33.42比45±38.28,P=0.0001),B组患者相比,A组患者有显着较大的梗塞。然而,有射血分数两组间无明显差异。下壁STEMI患者有一个正常的ST段导致更频繁地看到在B组患者(N=74[61.2%]安慰剂组n=29[24%],P=00001)V1到V3。在121例患者中,有RCA69.42%,而30.58%的罪魁祸首动脉LCX闭塞,如图12所示。 TIMIò冠脉流量中发现94例(77.4%)。TIMI0流量得分两组之间没有显着差异。通过冠状动脉造影梗死相关动脉(IRA)被确定355例和121例患者纳入研究符合标准。左冠状动脉回旋支(LCX)的疾病被发现显着的比例较高组(33例,27.3%)比B组(n=4,4.3%,P=0.0001),而右冠状动脉(RCA)疾病非常频繁地被发现,B组(N=76,,62.8%)较A组(每组8只,6.6%,P=0.0001)。在我们的研究中,33.88%(41例)患者后壁导联的ST段抬高组(n=80),而66.12%患者均无参与左心室后壁V7-V9。的敏感性,特异性,阳性预测值和阴性预测值与后壁导联ST段抬高V7-V9预测LCX的敏感性,特异性,阳性预测值和阴性预测值是84%,90%,80%和92%,而无ST段抬高后导致V7-V9是90%,84%,92%和80%,分别为RCA。度0.1mV(1毫米)下壁导联II,III和aVF导联ST段抬高下壁STEMI患者的诊断具有重要意义。 ST段抬高的比值导致II和III具有临床意义预测罪犯血管。在我们的研究中,铅III II被视为91例(75.21%),而Ⅱ导联ST段抬高的ST段抬高 III被视为30例(24.79%)。RCA是很经常从事心电图ST段抬高铅III II组(n=77,P=0.0001)为63.6%,而LCX是罪魁祸首动脉患者Ⅱ导联的ST段抬高 III组(n=23,19.3%,P=0.0001)。的敏感性,特异性,阳性预测值和阴性预测值分别为90%,61%,83%和75%,分别为ST段抬高铅III II预测RCA是罪魁祸首IRA。的敏感性,特异性,阳性预测值和阴性预测值,ST段抬高领先II III LCX分别为61%,90%,75%和83%。结论:在所有因急性下壁心肌梗死入院患者中,推荐常规记录后壁导联(V7,V8和V9)心电图。下壁心肌梗死时出现后壁导联的ST段抬高,经常提示与左回旋支有关。后壁导联的ST段抬高伴有大面积心肌损伤时,认为应给予再灌注治疗。
[Abstract]:Objective: the purpose of this study was to evaluate the role of the posterior wall lead (V7, V8 and V9) ST segment elevation in the diagnosis of acute posterior wall myocardial infarction combined with coronary angiography and CPK MB, EF and other auxiliary examinations.
Background: posterior wall myocardial infarction is difficult to be diagnosed by standard 12 lead electrocardiogram, especially in the acute phase. It can occur independently or often associated with lower wall myocardial infarction. The posterior wall lead V7, V8 and V9 are often ignored, but some researchers believe that the ECG information provided by these leads can help diagnose the lower wall, posterior wall myocardial infarction. The 12 lead and posterior wall lead electrocardiogram (V7, V8 and V9) ST segment elevation is common in the posterior lateral wall myocardial infarction, which is usually accompanied by left circumflex occlusion, large infarct area, reinfarction, and post infarction angina and high mortality. Electrocardiogram is the main diagnostic tool. Diagnosis and preliminary assessment of patients with chest pain. Electrocardiogram records are simple, convenient, cheap bedside tools, which make the idea of infarct area, prognosis and localized epicardial coronary artery occlusion, myocardial infarction responsible. It is a golden standard test for physiological evaluation of cardiac conduction. Diagnosis of AMI is based on ST-T changes, at least 2 consecutive clues or The existence of a new left bundle branch block (LBBB). The electrocardiogram of acute myocardial ischemia (in the case of left ventricular hypertrophy and left bundle branch block) the elevation of the ST segment of the:ST segment, equal to or greater than the man of 0.2mV; cut or equal to the 0.1 MV.ST segment of the two adjacent lead female lead and / or the limb lead at J point at 0.15mV. And T wave changes: new horizontal or downward tilt ST segment depression or equal to 0.05mV in continuous clues: and / or T reversal equal to or greater than 0.1mV after two adjacent conductance with the famous R or R/S ratio 1. coronary artery ligation soon after the serial electrocardiogram changes detection of the ischemic area of the clue. The ischemic electrocardiogram changes depend on 3 grades: RS Configuration (chest lead) I ischemia: high symmetrical T wave without ST segment elevation of two stage ischemia: ST segment elevation without QRS wave group III level ischemia: ST segment elevation without S wave and QRS wave group terminal part distortion; for QR configuration (limb lead) I grade: ST segment tall tall pair of elevation J point /R wave rate 0.550%) III: ST segment elevation, J point or R wave amplitude equal to 50% (J point /R wave ratio 0.5). A new ST segment deviation or even only 0.05 MV ischemia is still an important and specific measure and may affect the prognosis of the.T wave inversion that leads to a good sensitivity to the ischemic apparatus, but it is specific unless it is marked. 0.3MV ST segment elevation 0.1mV has a sensitivity of about 90% in at least two adjoining leads. The results of electrocardiogram are further tests, such as cardiac biomarkers and coronary angiography. Coronary angiography is a minimally invasive operation for diagnosis of occlusion, stenosis, narrowing, thrombosis, or enlargement of the coronary artery aneurysm. It is the gold standard diagnostic tool for the culprit of epicardial vascular obstruction. However, coronary arteriography does not provide information about the walls of the arteries and the severe atherosclerosis that does not infringe on the wall of the arteries that may not be detected.
Study methods: a total of 121 patients (102 men, 19 women) were enrolled in the study. The average age was 58.74 + 12 years. The patient had a chest pain that lasted for more than 30 minutes before admission, and the increase of creatine kinase (CK-B) was at least two times higher than the upper limit (normal value: 0-3.5ng/ml). At least 2 leads in the II, III and aVF lead showed ST segment elevation 0.1M in the lower wall guide. V (1mm), the posterior wall lead (V7, V8, V9) ST segment elevated 0.05mV (0.5mm). Coronary angiography showed that complete occlusion of the vessels or severe stenosis exceeded 70%. in LCX or RCA. The patients in the A group were divided into two groups: the patients in the A group were elevated in the posterior wall lead, and the posterior wall lead was not elevated. The admission standard included the chest pain lasting more than 30 points. Before admission, the elevation of creatine kinase (CK-MB) was two times higher than the upper limit (normal: 0-3.5ng/ml). The electrocardiogram showed that the ST segment was raised by 0.1 mm and at least 2 lower wall leads (II, III, AVF), ST segment elevation 0.05 mm and posterior lead V7, V8, V9, and coronary angiography showed that the single vessel was either LCX or complete occlusion or severe stenosis exceeding 70%RCA. exclusion standard. The lower wall lead (II, III, AVF) of the ST segment elevation of 0.1mV (II, III, AVF), the patients with lower wall myocardial infarction did not have to estimate the posterior wall lead (2013V9). Before the acute myocardial infarction, coronary artery bypass surgery or percutaneous coronary intervention, the present treatment, the recent left bundle branch block or the left ventricular hypertrophy of the electrocardiogram, was significantly narrowed, LCX And RCA or three vessel disease, therefore, a single infarct related artery can not be defined.
Results: the average age of the A group was 60 + 0.05 (5070 years), and the average age of the B group was 57.65 + 12.86 (45 to 70 years). The disease was a very common male than the female (83.47% to 16.53%). The ST segment elevation of the lower wall myocardial infarction in the group of lead III II B was often associated with the A group (N=72,59.5% placebo group n=19,15.7%, P=0.0001). ST segment elevation II III advocated that patients in group A were compared to group B (N=22,18.2%, placebo group n=8,6.6%, P=0.0001). The value of CPK-MB (90.12 + 33.42 than 45 + 38.28, P=0.0001), B group was significantly larger than that of the B group. However, there was no significant difference between the two groups with the ejection fraction. In group B patients (N=74[61.2%] placebo group n=29[24%], P=00001) V1 to V3. in 121 patients, there were RCA69.42%, and 30.58% of the culprit arteries LCX occluded, as shown in Figure 12. There was no significant difference between the 94 (77.4%).TIMI0 flow score of the two groups in the coronary flow of TIMI. The artery (IRA) was identified in 355 and 121 patients. The left coronary artery (LCX) disease was found to be in a higher proportion (33, 27.3%) than in the B group (n=4,4.3%, P=0.0001), and the right coronary artery (RCA) disease was very frequent, and the B group (N=76,62.8%) was more than the A group (8, 6.6%, P=0.0001) in each group. In the study, 33.88% (41 cases) of the posterior wall lead ST elevation group (n=80), and 66.12% patients did not participate in the left ventricular posterior wall V7-V9. sensitivity, specificity, positive predictive value and negative predictive value and ST segment elevation V7-V9 prediction LCX sensitivity, specificity, positive predictive value and negative predictive value were 84%, 90%, 80% and 92. V7-V9 is 90%, 84%, 92%, and 80%, which is 90%, 84%, 92%, and 80%, RCA. degree 0.1mV (1 mm), II, III, and aVF lead ST segment elevation of the lower wall of STEMI patients. The ST segment elevation ratio leads to II and III has clinical significance to predict the criminal blood vessels. In our study, the lead was considered as 91 cases (7) 5.21%), while the ST segment elevation III of the ST segment elevation of the second lead was considered as 30 cases (24.79%).RCA was very often engaged in the ST segment elevation of the lead III II group (n=77, P=0.0001) 63.6%, while LCX was the ST segment of the second lead of the culprit artery patients. The sensitivity, specificity, positive predictive value and negative predictive value were the same. 90%, 61%, 83%, and 75%, respectively, ST segment elevation lead III II prediction RCA is the culprit IRA. sensitivity, specificity, positive predictive value and negative predictive value, ST segment elevation leading II III LCX respectively 61%, 90%, 75%, and 83%. conclusions: in all patients with acute inferior wall myocardial infarction, regular recording of posterior wall guide is recommended. Electrocardiogram (V7, V8, and V9). The ST segment elevation of the posterior wall lead in the lower wall myocardial infarction is often associated with the left circumflex branch. In the case of ST segment elevation in the posterior wall lead and large area of myocardial injury, reperfusion therapy should be given.
【学位授予单位】:吉林大学
【学位级别】:硕士
【学位授予年份】:2013
【分类号】:R542.22

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