Quantitative improvement in signal-averaged electrocardiography after coronary artery bypass grafting.

Takami Y; Ina H

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Quantitative improvement in signal-averaged electrocardiography after coronary artery bypass grafting.

机译：冠状动脉旁路移植术后平均信号心电图的定量改善。

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Abnormal signal-averaged electrocardiography (SAECG) reflects slow and heterogeneous myocardial conduction, predicting ventricular arrhythmia and sudden cardiac death in patients with ischemic heart disease. The purpose of this study was to investigate the quantitative effect of coronary artery bypass grafting (CABG) on SAECG, which is still controversial, and to identify the factors that are related to it. Pre- and postoperative SAECGs were recorded in 100 patients who underwent CABG. Compared parameters included filtered QRS duration (dQRS), root mean square voltage in the terminal 40 ms of the QRS complex (RMS40), and duration of the terminal low-amplitude signal less than 40 microV (LAS40). All 3 parameters in SAECG improved significantly after CABG (dQRS: 105+/-21 ms-->99+/-18 ms, RMS40: 55+/-45 microV-->65+/-41 microV, LAS40: 29+/-19 ms-->25+/-12 ms). The improvements in SAECG were greater in patients who underwent complete revascularization and in those without prior myocardial infarction. In conclusion, CABG improved SAECG quantitatively, even in patients with normal SAECG. However, this improving effect was variable and closely related to the presence of prior myocardial infarction and the completeness of revascularization.

机译：信号平均心电图异常（SAECG）反映了心肌传导缓慢且异质，预测了缺血性心脏病患者的室性心律不齐和心源性猝死。这项研究的目的是调查仍存在争议的冠状动脉旁路移植术（CABG）对SAECG的定量作用，并确定与之相关的因素。记录了100例行CABG的患者的术前和术后SAECG。比较的参数包括滤波后的QRS持续时间（dQRS），QRS复合波终端40 ms的均方根电压（RMS40）和终端低振幅信号的持续时间小于40 microV（LAS40）。 CABG后SAECG中的所有3个参数均显着改善（dQRS：105 +/- 21 ms-> 99 +/- 18 ms，RMS40：55 +/- 45 microV-> 65 +/- 41 microV，LAS40：29+ / -19毫秒-> 25 +/- 12毫秒）。接受完全血运重建和无心肌梗死的患者SAECG的改善更大。总之，即使在SAECG正常的患者中，CABG也会从数量上改善SAECG。然而，这种改善作用是可变的，并且与先前的心肌梗塞的存在和血运重建的完成密切相关。

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《Circulation journal》 |2003年第2期|共3页
作者
Takami Y; Ina H;
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正文语种 eng
中图分类心脏、血管（循环系）疾病;
关键词
millisecond; Coronary Artery Bypass; bypass; Coronary artery; transplantation; 冠状动脉分流术;

机译：millisecond;Coronary Artery Bypass;bypass;Coronary artery;transplantation;冠状动脉分流术;

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1. Quantitative improvement in signal-averaged electrocardiography after coronary artery bypass grafting. [J] . Takami Y, Ina H Circulation journal . 2003,第2期

机译：冠状动脉旁路移植术后平均信号心电图的定量改善。
2. Coronary artery surgery: conventional coronary artery bypass grafting versus off-pump coronary artery bypass grafting. [J] . Salzberg SP, Adams DH, Filsoufi F Current opinion in cardiology . 2005,第6期

机译：冠状动脉手术：常规冠状动脉搭桥术与非体外循环冠状动脉搭桥术。
3. Significance of graft occlusion and coronary atherosclerosis 5 years after coronary artery bypass grafting. A quantitative angiographic study with serial exercise testing. [J] . Korpilahti K, Engblom E, Hamalainen H, Journal of Internal Medicine . 1999,第5期

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4. ASSESSMENT OF SIGNAL-AVERAGED P-WAVE AS APREDICTOR OF POSTOPERATIVE ATRIAL FIBRILLATIONAFTER CORONARY ARTERY BYPASS GRAFT SURGERY [C] . TOSHIKO NAKAI, YUJIKASAMAKI, TAKESHI YAMADA, International Congress on Electrocardiology . 2005

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5. Clinical decision support algorithm for prediction of postoperative atrial fibrillation following coronary artery bypass grafting. [D] . Seaborn, Geoffrey E. J. 2014

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6. Signal averaged P wave compared with standard electrocardiography or echocardiography for prediction of atrial fibrillation after coronary bypass grafting. [O] . P. J. Stafford, S. Kolvekar, J. Cooper, 1997

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机译：手术治疗冠状动脉微成本分析。摘要，执行211总结和最终报告

Quantitative improvement in signal-averaged electrocardiography after coronary artery bypass grafting.

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