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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY
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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY
 
2019 Vol.28 Issue.6
Published 2019-12-28
379
2019 Vol. 28 (6): 379- [Abstract] ( 48 ) [HTML 1KB] [ PDF 237KB] ( 695 )
380
2019 Vol. 28 (6): 380- [Abstract] ( 56 ) [HTML 1KB] [ PDF 284KB] ( 816 )
381 Task Force on “Expert Consensus on Dynamic Electrocardiogram Reporting Specification”
Expert consensus on dynamic electrocardiogram reporting specification
Dynamic electrocardiogram (DCG) is a widely used noninvasive monitoring technique, and the DCG reports are meaningful in the diagnosis, treatment and evaluation of diseases. The experts have drafted an expert consensus on the DCG reports, and mainly introduced the attention of the DCG reports, the content of the dynamic information, the editing of the reports and the format of the reports.
2019 Vol. 28 (6): 381-386 [Abstract] ( 106 ) [HTML 1KB] [ PDF 1076KB] ( 2440 )
389 2017 ISHNE/HRS expert consensus statement on ambulatory ECG and external cardiac monitoring/telemetry(4): the present, prospect and recommendations of cardiac monitoring
Ambulatory ECG (AECG) is not only widely used to detect arrhythmias in clinic, but also to satisfy the variety of clinical needs, which involves different clinical personnel. As a result, its necessary to understand the advantages and limitations of the AECG. In this paper, the specifically implemented technique of cardiac monitoring technology, ECG data management and emerging technologies are introduced in detail. In addition, the consensus of the committee on the indication and classification of AECG is summarized.
2019 Vol. 28 (6): 389-396 [Abstract] ( 90 ) [HTML 1KB] [ PDF 2750KB] ( 1519 )
397 Anti-tumor therapy and atrial fibrillation
Liu Tong，Xia Yunlong
Atrial fibrillation is one of the most common arrhythmias. A large number of studies have shown that tumor and atrial fibrillation share many common risk factors. Tumor progression and anti-tumor therapy can both increase the risk of atrial fibrillation, and the occurrence of atrial fibrillation event during anti-tumor therapy and follow-up can affect the treatment effect and prognosis of tumor patients. Tumor-induced atrial fibrillation may be related to the cardiotoxicity of tumorassociated therapy, increasing the mortality of tumor patients. This paper summarizes a large number of domestic and foreign literatures on the potential mechanism of tumor-induced atrial fibrillation.
2019 Vol. 28 (6): 397-401 [Abstract] ( 96 ) [HTML 1KB] [ PDF 1186KB] ( 1583 )
402 Bradyarrhythmias associated with chemotherapy
Gu Yunfei，Zhang Xuan，Zhang Shouyan
Cardiotoxicity is becoming one of the most harmful side effects of antitumor treatment, and the occurrence of arrhythmia is increasingly attracting attention. Arrhythmias caused by chemotherapy drugs include atrial fibrillation, atrial premature beats, supraventricular tachycardia, ventricular premature beats, ventricular tachycardia, sinus bradycardia, sinus arrest, atrioventricular block. Arrhythmias can be secondary to druginduced cardiomyopathy or heart failure, or they can occur independently. At present, the bradyarrhythmia associated with chemotherapy drugs has not drawn enough clinical attention, and the actual incidence of bradyarrhythmias related to antitumor treatment is underestimated. This article reviews this content so that clinicians can fully understand these adverse events and improve clinical management and patient prognosis.
2019 Vol. 28 (6): 402-405 [Abstract] ( 72 ) [HTML 1KB] [ PDF 984KB] ( 1180 )
406 Effect of endocrine therapy on electrocardiogram in patients with tumor
Geng Xuhong, Wang Yueying, Ma Xiaotong，Pan Shuo
Endocrine therapy slows down the tumor progression by interfering activation pathway of sex hormones. A variety of new breakthrough drugs improve the survival rates of patients with breast and prostate cancers. Sex hormones are the important factors that affect repolarization of ventricular cardiomyocytes(RVC), and highly associated with abnormal RVCinduced malignant arrhythmia. Specifically, it was reported that drugs used for endocrine therapy resulted in electrophysiological changes, including atrial fibrillation, QTc prolongation and torsade de pointes, increasing the mortality in patients with tumor. The paper summarizes the changes of electrocardiogram that induced by drugs used for endocrine therapy in patients with tumor.
2019 Vol. 28 (6): 406-409 [Abstract] ( 78 ) [HTML 1KB] [ PDF 1050KB] ( 1067 )
410 Baseline electrocardiographic characteristics in patients with first diagnosed diffuse large B-cell lymphoma
Chen Ziliang， Lu Ke，Zhou Lingling,Liu Daiqi,Li Xiulian，Han Xue，Zhang Huilai，Liu Tong
Objective  To analyze electrocardiographic characteristics of patients with diffuse large B-cell lymphoma (DLBCL) Methods  Electronic medical records of 90 patients who were pathologically diagnosed as DLBCL were retrospectively reviewed in Tianjin Medical University Cancer Institute and Hospital between December 2014 and September 2015. Clinical characteristics, incidence of abnormal electrocardiogram (ECG) and manually measured baseline hypertension electrocardiographic parameters were collected into the study. Results  The mean age of the cohort was 58 years old, among which 53 cases(58.9%)  were males. In these patients, 25 cases (27.8%) had a history of hypertension and 13 cases(14.4%) had a history of diabetes mellitus. Abnormal baseline ECG were discovered in 54 cases(60.0%), among which 32 cases(35.6%)  showed ST-T change. The statistical results of baseline electrocardiographic are as follows: HR (83±17)beat/min, PWD (104.6±11.0)ms, PWA (0.13±0.04)mV, PtfV1 (-0.010±0.011)mm·s, Pd (37.0±10.1)ms, PRI (149±23)ms, QRSD (89.3±16.4)ms, QRS axis 46.0°±35.1°, QTc (417.6±61.5)ms , QTd (43±16)ms, TpTe (86±21)ms、iCEB 4.0±0.8. Conclusion  The newly diagnosed DLBCL patients have a high morbidity of cardiovascular diseases, and more than 50% patients are combined with abnormal baseline ECG, with relatively normal electrocardiographic parameters, which should be highly concerned in clinical practice.
2019 Vol. 28 (6): 410-413 [Abstract] ( 83 ) [HTML 1KB] [ PDF 990KB] ( 1029 )
414
2019 Vol. 28 (6): 414-416 [Abstract] ( 76 ) [HTML 1KB] [ PDF 1011KB] ( 1090 )
417 Method and effect analysis of radiofrequency ablation of organic heart disease complicated with ventricular tachycardia
Li Meijuan，Yang Yali， Huang Weibin
ObjectiveT  o evaluate the effectiveness of radiofrequency ablation in 14 patients with organic heart disease complicated with ventricular tachycardia in our center, and to provide a method for further improving the success rate of surgery and reducing the recurrence rate. Methods  Patients with radiofrequency ablation due to organic heart disease complicated with ventricular tachycardia in the center   were selected in the study. The location, strategy, success rate and recurrence rate of ablation in patients with ventricular tachycardia were analyzed. Results  Fifteen patients with organic heart disease and ventricular tachycardia were followed up for radiofrequency ablation (17±3) months. There was no sustained ventricular tachycardia during follow-up, and no obvious complications occurred after operation. There was no death or bleeding. Conclusion  Radiofrequency ablation is safe and effective in patients with organic heart disease and ventricular tachycardia. It can improve the chance of ventricular tachycardia and reduce the chance of sudden death.
2019 Vol. 28 (6): 417-419 [Abstract] ( 63 ) [HTML 1KB] [ PDF 982KB] ( 950 )
420 Cardiogenic syncope
Zhang Xuan,Wang Jinfeng,Wang Deguo,Tang Shengxing
Syncope is a common symptom caused by transient global cerebral hypoperfusion due to decreased peripheral vascular resistance and/or decreased cardiac output. Cardiogenic syncope is the most dangerous type of syncope, and its mortality rate is double that of other syncopes. Arrhythmias are the most common causes of cardiac syncope. Both bradyarrhythmias and tachyarrhythmias may predispose to syncope. The latest guidelines for syncope have been revised to focus on clinical history, physical examination, standing and supine Bp,12-lead echocardiogram and electrophysiological examination.
2019 Vol. 28 (6): 420-423 [Abstract] ( 94 ) [HTML 1KB] [ PDF 989KB] ( 1041 )
424 Influence of gender on the correlation between premature ventricular beats and mean heart rate
Ye Minxia, Li Sujuan
Objective  To investigate the correlation between ventricular premature complexes(PVC) and mean heart rate, as well as the frequency domain characteristics of Holter monitor in nonelderly population of different genders. Methods  One hundred and ten cases of non-elderly outpatient patients with PVC load of >1% were enrolled and divided into male group and female group. After the Holter examination, the average heart rate per hour of each sample and the correlation analysis of PVC were divided into fastheart rate correlated PVC (F-HR-PVC), slow heart rate correlated PVC (S-HR-PVC) and independent heart rate correlated PVC (I-HR-PVC), so as to analyze the proportion of PVC types and time domain indexes of heart rate variability(HRV) between the two groups ResultsIn the male group, the proportion of F-HR-PVC was significantly higher than that of the female group (60.0% vs.33.3%), while the proportion of I-HR-PVC and S-HR-PVC was lower than that of the female group respectively(24.0% vs.36.7%, 16.0% vs.30.0%) HRV analysis of the patients in the two groups showed that rMSSD (40.64±27.40 vs.27.83±9.31,P=0.020) and pNN50 (11.60±9.31 vs. 7.17±5.92, P=0037) in the male group were higher than that of the female group. The SDNN and SDANN showed no statistical difference between the two groups.ConclusionIn the nonelderly population without definite heart disease, the proportion of F-HR-PVC in the male group was higher than that in the female group, and the proportion of S-HR-PVC and I-HR-PVC was lower than that in the female group, suggesting that the clinical incidence of PVC in the male group may be related to the increase of sympathetic nervous tone, and the female group may be related to the sympathetic parasympathetic nervous system and estrogen.
2019 Vol. 28 (6): 424-428 [Abstract] ( 66 ) [HTML 1KB] [ PDF 1394KB] ( 1126 )
429 Prediction of ECG characteristics on the origin sites of idiopathic outflow tract premature ventricular contraction
Xue Nina，Wu Yueping，Huang Weibin，Yang Lijuan
Objective  To analyze the ECG characteristics of patients with idiopathic outflow tract premature ventricular contraction (PVC) and summarize the algorithm of predicting the origin sites of idiopathic outflow tract PVC. Methods  One hundred and two patients with successful radiofrequency ablation for PVC   were enrolled in our study. Multiple ECG indicators were analyzed for all patients, and multiple ECG indicators of different parts of the outflow tract were statistically analyzed. The number of cases with various characteristic indicators in different parts of the idiopathic outflow tract PVC were statistically analyzed. Results  The figure of left bundle branch block is the best evaluation index to distinguish origin sites of PVC among the right ventricular outflow tract and the aortic valve area close to its anatomical position and other left ventricular outflow tract. The V2 leading index of the right ventricular outflow tract was much lower than that of the aortic valve region. Ratio of R/S amplitude index≥30% in leads V1 and V2 of right ventricular outflow tract was significantly lower than that of aortic valve area of left ventricular outflow tract or left ventricular outflow tract aortic valvemitral valve junction area. The ratio of Rwave time limit index≥50% in leads V1 and V2 of right ventricular outflow tract was significantly lower than that in aortic valve area of left ventricular outflow tract. Conclusion  The ECG of different origin sites of idiopathic outflow tract PVC has different characteristic manifestations, which is of great significance for accurate positioning of radiofrequency ablation.
2019 Vol. 28 (6): 429-433 [Abstract] ( 77 ) [HTML 1KB] [ PDF 1008KB] ( 957 )
434 Subclinical hyperthyroidism and its association with atrial fibrillation
Xu Guiping，Wei Xiaoqi，Wang Xiaoyi，Lin Yanqing，Zheng Weiping
ObjectiveTo explore the association of subclinical hyperthyroidism (SCH) with atrial fibrillation (AF).MethodsThree hundred and eightyeight patients with SCH diagnosed by thyroid function examination in our hospital  were selected as SCH group, 388 inpatients with hyperthyroidism were selected randomly as hyperthyroidism group while 388 inpatients with normal thyroid function were selected randomly as normal group. General information,TSH levels and incidence of atrial fibrillation were compared among the three groups. Serum TSH levels were compared between AF group and nonAF group. Correlation between TSH level and incidence of AF was analyzed with the methods of Spearman. Logistic regression analyses were performed to identify the independent risk factors for AF. Results① There were significant differences in the incidence of AF among the three groups (3.22% vs. 17.78% vs. 12.90%，P＜0.05); ② TSH level of AF group was significantly lower than nonAF group [0.14(0.13，0.23) vs. 0.20(0.09，2.59), P＜0.01]；③ Spearman sequential correlation analysis demonstrated that TSH was negatively correlated with AF, r=-0.162 (P＜0.01)； ④ Logistic analyses demonstrated that age, SCH and diabetes were independently associated with AF (OR=1.29, 2.03, 1.79, P＜0.05). ConclusionSCH was independently associated with AF. Early diagnosis and treatment of AF are advised in patients with SCH.
2019 Vol. 28 (6): 434-437 [Abstract] ( 73 ) [HTML 1KB] [ PDF 987KB] ( 1063 )
438 Risk of ECG RT fusion in the firstaid of critically ill patients
Zheng Wenkai, Lin Qiuhui,Liu Linyong
Objective  To analyze the effect of electrocardiogram(ECG) RT fusion on prognosis in first aid. Methods  ECGs were recorded in 218 critically ill patients. According to whether or not the ST segment disappears, they were divided into RT fusion group and nonfusion group first. Then they were further divided into tachycardia group, normal heart rate group and bradycardia group according to different heart rates. The QRS wave width, QT interval, QTC interval and mortality were compared among the different groups. Results  There was significant difference in QRS wave width, QT interval, QTc interval and mortality between RT fusion group and non-fusion group in the patients with bradycardia and normal heart rate（P<0.05）. There was no significant difference in QRS wave width, QT interval and QTc interval(P>0.05) between RT fusion group and nonfusion group in the patients with tachycardia except mortality. Conclusion  The essence of RT fusion phenomenon in emergency center of critically ill patients is serious myocardial ischemia, and the ventricular rate reflects the development trend of severity of myocardial ischemia from fast to slow.
2019 Vol. 28 (6): 438-442 [Abstract] ( 68 ) [HTML 1KB] [ PDF 17276KB] ( 721 )
443 Research progress on Notch signaling pathway related arrhythmia
Wang Ning, Zhang Zhenye, Peng Xiafeng, Wang Ruxing
The Notch signaling pathway is a highly conserved pathway that regulates the growth and development of organisms by cell-cell interactions. During the embryogenesis, Notch signaling pathway is involved in the programming from cardiac structure to cardiac electrophysiological properties, and plays an important role in the development of heart and conduction system. In recent years, it has been found that the Notch signaling pathway can regulate a variety of genes encoding ion channels, and participate in the mechanism of various arrhythmias. This review focuses on the structure and function of the Notch signaling pathway, and its effects on the mechanism of arrhythmias.
2019 Vol. 28 (6): 443-446 [Abstract] ( 81 ) [HTML 1KB] [ PDF 1003KB] ( 1158 )
447 Research progress on animal models of bradyarrhythmia
Wang Zhe，Liu Yanfei，Wang Ya，Li Lizhi，Liu Yue
Bradyarrhythmia is a disease characterized by slow heart rate. The prevalence rate of bradyarrhythmia has increased in recent years, which seriously affects human life and may induce sudden death. The establishment of scientific and stable animal models is conducive to further research and prevention of bradyarrhythmia. Currently, the models of bradyarrhythmia mainly include induced animal models, mechanical stimulation animal models, electrical stimulation animal models, radiofrequency ablation animal models, etc. Various modeling methods have advantages and disadvantages, and more efficient and reasonable animal models are required in the future.
2019 Vol. 28 (6): 447-450 [Abstract] ( 82 ) [HTML 1KB] [ PDF 1041KB] ( 1202 )
451
2019 Vol. 28 (6): 451-453 [Abstract] ( 58 ) [HTML 1KB] [ PDF 8311KB] ( 1179 )
454
2019 Vol. 28 (6): 454-456 [Abstract] ( 54 ) [HTML 1KB] [ PDF 11769KB] ( 949 )
458
2019 Vol. 28 (6): 458- [Abstract] ( 47 ) [HTML 1KB] [ PDF 7923KB] ( 951 )
459
2019 Vol. 28 (6): 459- [Abstract] ( 45 ) [HTML 1KB] [ PDF 616KB] ( 846 )
460
2019 Vol. 28 (6): 460- [Abstract] ( 45 ) [HTML 1KB] [ PDF 719KB] ( 744 )
461
2019 Vol. 28 (6): 461- [Abstract] ( 53 ) [HTML 1KB] [ PDF 1010KB] ( 913 )
462
2019 Vol. 28 (6): 462- [Abstract] ( 43 ) [HTML 1KB] [ PDF 323KB] ( 674 )
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