JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

	2018 Vol.27 Issue.1 Published 2018-02-28

Article

	1
		LI Guang-Ping, LIU Tong, LIU EnZhao

		2018 Vol. 27 (1): 1-3 [Abstract] ( 572 ) [HTML 1KB] [ PDF 0KB] ( 767 )

	4	Open a new era of artificial intelligence electrocardiogram analysis system
		LU Xi-Lie
		It is required by the development of science and technology to introduce computer into interpretation of electrocardiogram(ECG). ECG report will rely more on artificial intelligence diagnosis. At present, the top priority is to construct the countryneeded artificial intelligence ECG diagnosis system which can be applied in medical treatment, health care, teaching and research. The extensive utilization of the system will vigorously propel the development of electrocardiology and elevate the level of disease prevention, early warning, diagnosis, treatment and prognosis evaluation in clinical medicine.
		2018 Vol. 27 (1): 4-7 [Abstract] ( 1828 ) [HTML 1KB] [ PDF 1019KB] ( 3874 )

	7	ECG scatterplot：a new horizon for big data analysis
		LI Fang-Jie
		Different from old way in which computer simply intimulates artificial ECG diagnosis before, ECG scatterplot makes a breakthrough by expanding the horizon of cardiac rhythm from ECG waveform to phase space. With the sectional view of strange attractor, it visually reflects the diagnostic characteristics of different arrhythmias from ECG big data. By combining ECG scatterplot technique with artificial intelligence, wearable ECG equipment and block chain technology, ECG big data analysis will develop in the direction of intelligentization and facilitation, and provide more protections for patients/users information safety in remote ECG monitoring.
		2018 Vol. 27 (1): 7-8 [Abstract] ( 1493 ) [HTML 1KB] [ PDF 966KB] ( 2410 )

	11	Research status of sudden infant death syndrome
		ZHU Jin-Xiu, LU Xi-Lie, LU Nan, HE Zhuo-Qiao, YAN Jing-Yi, TAN Xue-Rui
		Sudden infant death syndrome(SIDS) is an important cause of infant death. SIDS of unknown causes was incorporated into the scope of hereditary arrhythmia by HRS/EHRA/APHRS expert consensus in 2013. Long QT syndrome contributes to about 12% of SIDS, and other related ion channelopathies include Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia and short QT syndrome. In addition, it is revealed that early repolarization is usually accompanied by long QT syndrome, Brugada syndrome and short QT syndrome, and further increases the risk of arrhythmia events. With its easiness,noninvasiveness, lowprice and operability, electrocardiography plays an important role in screening, making early warning and diagnosing SIDS induced by hereditary arrhythmia.
		2018 Vol. 27 (1): 11-17 [Abstract] ( 896 ) [HTML 1KB] [ PDF 1567KB] ( 2238 )

	18	Recent advances in green electrophysiology
		ZHANG Yan-Chun, SUN Jie, DONG Jian-Ting
		With the improvement of threedimensional electroanatomical mapping system and development of electrophysiology, X ray fluoroscopy time can be greatly reduced, even to zero. This is so called “green electrophysiology”, which is safer and more effective both for physicians and patients. This paper reviews on related literatures published at home and abroad in recent years.
		2018 Vol. 27 (1): 18-22 [Abstract] ( 970 ) [HTML 1KB] [ PDF 1087KB] ( 2430 )

	23	Comparison among different catheters in nonfluoroscopic radiofrequency ablation of paroxysmal supraventricular tachycardia
		ZHANG Rong-Jun, ZHANG Shou-Wen, SHAO Ming-Feng, WU Fang-Fang, WANG Jie, WEI Yan-Jin, WANG Jia-Yi, LI Xin-Hua
		Objective To compare and evaluate the feasibility and safety of the four clinically frequentlyused catheters during the process of nonfluoroscopic radiofrequency ablation of paroxysmal supraventricular tachycardia(PSVT) guided by EnSite Velocity threedimensional electroanatomical mapping system. MethodsWe selected 458 PSVT patients who had undergone radiofrequency ablation. Among those research objects, there were 263 patients with atrioventricular nodal reentrant tachycardia(AVNRT) resulting from dual atrioventricular nodal pathway(DAVNP)(DAVNP group), 48 patients with atrioventricular reentrant tachycardia(AVRT) caused by right accessory path(RAP)(RAP group) and 147 patients with AVRT resulting from left accessory path(LAP)(LAP group). According to the catheter used in the procedure, each group was further randomly classified into Johnson group, APT group, Medtronic group and St. Jude group. Nonfluoroscopic electrophysiologic study and radiofrequency ablation were performed within a limited period of time. The success rate of operation,incidence of complications and operation time of radiofrequency catheter were compared and analyzed. ResultsNonfluoroscopic radiofrequency ablation was completed in 379 patients(82.8%). The ablation time of DAVNP group was within 30 minutes. The operation time of the four brands of catheters was separately (17.71±4.58) min, (17.51±4.42) min, (17.32±5.34) min and (17.69±4.64) min, without statistically significant difference(P>0.05). Fortysix patients in RAP group completed the ablation within 60 minutes; the completion rate of the four brands of catheters was separately 91.7%, 100%, 100% and 91.7%, without statistically significant difference(P>0.05). Only 47.6% of patients in LAP group completed the procedure within 30 minutes; the success rate of the four brands of catheters was 88.9%, 54.1%, 32.4% and 13.5%; the rate of Johnson group was higher than that of other three groups(P<0.01); the incidence of complications was 1.1%. ConclusionIn the guidance of appropriate and familiar threedimensional mapping system, it is suggested to choose suitable ablation catheter according to the type of arrhythmia and operators habits. The four brands of catheters are all fit for the ablation of DAVNP and RAP,all with relatively high success rates. The nonNAV A bent(yellow handle) and B bent(red handle) catheters by Johnson & Johnson are recommended for LAP ablation. It proves to be feasible, safe and efficient to perform nonfluoroscopic radiofrequency ablation of PSVT guided by EnSite Velocity system.
		2018 Vol. 27 (1): 23-28 [Abstract] ( 686 ) [HTML 1KB] [ PDF 1047KB] ( 1721 )

	33	Characteristics and significance of timeRR scatterplot of cardiac pacemaker with different special functions
		ZHANG Fang-Fang, LI Shi-Feng, PAN Yun-Ping, LI Zhong-Jian
		ObjectiveTo determine the special functions of cardiac pacemaker by observing the morphological characteristics of its timeRR scatterplot. MethodsA total of 128 patients implanted with pacemakers were classified into four groups according to special functions of cardiac pacemakers: group A (without special function), group B(frequency lagging behind function), group C(with sick sinus syndrome or atrial fibrillation complicating VVI pacemakers frequency adapting to function) and group D(with sleeping function). The morphological characteristics of timeRR scatterplot were observed in each group. ResultsPatients in the four groups shared the following features: (ⅰ) when pacing rhythm covered 24 hours, timeRR scatterplot appeared as narrow and compact “line”; (ⅱ) when pacing rhythm partly covered 24 hours, an obvious “boundary line” below 1.2 s showed at the upper edge of timeRR scatterplot while the lower edge formed a “punctate or cloudlike” bar chart. The timeRR scatterplot of each group had its own characteristics: in group A, it was a straight line or “boundary line”; in group B, it was separated into three layer—compact middle layer, straight linear upper layer and lower layer with fluctuating scatter belt; in group C, it was a line or “boundary line” varying in height and disobeying any changing law; in group D, it appeared as a straight line in the day while it was “laddershaped” at night. ConclusionThe morphological characteristics of timeRR scatterplot vary among pacemakers with different special functions and the characteristics help to make quick judgment of pacemakers special functions. It provides a new method and reference for primary medical staffs to judge the special functions of pacemakers quickly and accurately.
		2018 Vol. 27 (1): 33-37 [Abstract] ( 859 ) [HTML 1KB] [ PDF 8189KB] ( 1367 )

	38	Clinical study on SaahECG and ECG in simultaneously analyzing coronary heart disease induced changes
		LIU Li, ZHAO Wen-Jiao
		Objective To explore the clinical value of Nishach precision electrocardiogram(SaahECG) and electrocardiogram(ECG) in diagnosing the patients with non-ST-segment elevation coronary heart disease(CHD). Methods SaahECGs and ECGs were synchronously collected from 871 patients with chest pain, chest tightness or other suspected symptoms of CHD. A total of 75 inpatients(accounting for 8.61%) out of them were screened out who had undergone coronary angiography(CAG) and matched with the inclusion criteria. According to CAG results, they were divided into two groups: one group with stenosis of at least one of the main branches of coronary artery≥70% and the other group with coronary stenosis <70%. The two parameters of SaahECG(the number of wavelet in ST-T segment and its proportion in duration) and ECG were analyzed. ResultsThe sensitivity of SaahECG and ECG in diagnosing CHD was 87.72% and 26.32%, respectively while the specificity was separately 22.22% and 72.22%. Conclusion As a new technique to record the electrical activity of the heart, SaahECG is superior to ECG in sensitivity of CHD diagnosis, and is safer and easily operated.
		2018 Vol. 27 (1): 38-42 [Abstract] ( 905 ) [HTML 1KB] [ PDF 2058KB] ( 1626 )

	43	Comparative analysis on ECGs of patients with breast cancer before and after chemotherapy
		WANG Li-Ying, WANG Xin-Kang
		ObjectiveTo analyze the difference between ECG changes of elderly and nonelderly patients with breast cancer after chemotherapy. MethodsFrom the inpatients in our hospital from January 2014 to December 2016, 152 cases diagnosed with stage Ⅱ-Ⅲ breast cancer were selected. They were divided into non elderly group(≤60 years old, 80 cases) and elderly group(＞60 years old, 72 cases). The ECGs of the enrolled patients were all normal before being treated by 6 periods of chemotherapy. ECG changes were observed after each period.ResultsAfter 6 periods of chemotherapy, (ⅰ) the incidence rate of ECG changes was 59.2%(90/152) among all the enrolled patients; (ⅱ) the incidence of ECG abnormalities in elderly group was significantly higher than that in nonelderly group with statistically significant difference(76.4% vs. 43.8%, P＜0.05). ConclusionWhether in the elderly group or in the nonelderly group, chemotherapy will cause damage to the heart. ECG abnormalities are commonly seen after chemotherapy in elderly people if compared with nonelderly people. Therefore, it is suggested to routinely take some preventive measures on patients over 60 to protect the heart in the process of chemotherapy.
		2018 Vol. 27 (1): 43-45 [Abstract] ( 744 ) [HTML 1KB] [ PDF 948KB] ( 1509 )

	46	Changes of cardiac chronotropic function among hyperuricemic population during treadmill exercise test
		LIN Su-Hua, WU Yue-Ping, YANG Li-Juan
		ObjectiveTo investigate the changes of cardiac chronotropic function in hyperuricemic patients during treadmill exercise test(TET). MethodsThe research objects were divided into control group(127 cases) and hyperuricemia group(121 cases). The peak exercise time, chronotropic response index(CRI), recovery percentage of heart rate and systolic blood pressure(SBP) two minutes after rest, recovery time of heart rate and blood pressure back to pre exercise level, and other indexes were observed and compared between the two groups during TET.ResultsIn hyperuricemia group, the peak exercise time came earlier and cardiac chronotropic function was worse than that in the control group; the recovery percentage of heart rate and SBP two minutes after rest decreased if compared with the control group; the recovery time of heart rate and blood pressure back to preexercise level was longer than that in the control group,all with statistically significant differences. ConclusionHyperuricemic people are prone to cardiac chronotropic dysfunction, which suggests the fragility of cardiac autonomic nerve function, increased risk of cardiovascular events and poor prognosis. Therefore, enough attention should be paid on these patients clinically.
		2018 Vol. 27 (1): 46-48 [Abstract] ( 625 ) [HTML 1KB] [ PDF 951KB] ( 1416 )

	49	Distributive characteristics and ambulatory electrocardiography analysis of patients with palpitation
		ZHENG Xuan, LI Gui, CHEN Shu-Ling, JIN Ling-Dan, LIN Bao-Ying, LI Shui-Zhu
		ObjectiveTo observe the distributive characteristics of patients with palpitation in the population and the changes of ambulatory electrocardiography(AECG).MethodsThe observation objects were 290 patients with palpitation as a chief complaint who had been treated by our hospital from September 2016 to September 2017. They were divided into three groups by age: young group(18-39 years old), middleaged group(40-59 years old) and elderly group(≥60 years old). All the patients underwent 24hour AECG monitoring and analysis of heart rate variability(HRV). The occurrence of palpitation was compared among groups and so did the results of AECG examination and HRV analysis.ResultsIn the middleaged and elderly groups, the incidences of palpitation were higher than that in young group(P<0.05) and females were more likely to suffer from palpitation than males(P<0.05); the incidence of palpitation complicating arrhythmia increased if compared with that in young group(P<0.05); the average heart rate, SDNN, SDANN and pNN50 were all lower than those in young group with statistically significant differences(P<0.05).There was no statistically significant difference of rMMSD among the three groups. Reducing SDNN was observed in parts of patients with normal AECG results. ConclusionThe incidence of palpitation and detection rate of arrhythmia significantly increase with age while HRV shows a decreasing trend. For parts of palpitation patients, although no obvious AECG abnormality is found, HRV analysis indicates varying degrees of autonomic nerve function damage.
		2018 Vol. 27 (1): 49-52 [Abstract] ( 827 ) [HTML 1KB] [ PDF 959KB] ( 1544 )

	53	Clinical value of 18lead ambulatory electrocardiography
		LU Xi-Lie, DUAN Yang
		Based on 12lead ambulatory electrocardiography(AECG) system, synchronously recorded 18lead AECG adds 6 leads of V3RV5R and V7-V9, which serve comprehensive detection of left and right atrioventricular electrical activities. The 18lead AECG recording & analysis system derives from fully digital improvement of classical Wilson lead system and modified MasonLikar limb lead system,and the synchronous 18lead AECG is deducted with a small quantity of body surface electrodes. The newadded leads can effectively detect the synchronous AECG of left ventricular posterior wall and right ventricle which cannot be detected by routine 12lead AECG. In addition, 18lead AECG achieves unique effect in thoroughly evaluating myocardial blood supply at multiple sites, which shows tremendous advantages.
		2018 Vol. 27 (1): 53-57 [Abstract] ( 1397 ) [HTML 1KB] [ PDF 3897KB] ( 2069 )

	63	Research progress on ECG changes of cirrhosis patients
		JIANG Chao, MA Meng-Xia, JU Jian
		It has been verified that cirrhosis affects cardiac functions and leads to cardiac electrophysiological abnormalities including repolarization abnormalities, chronotropic incompleteness and electromechanical decoupling. The above changes can be accompanied with ECG manifestations. ECG abnormalities may indicate cardiac involvement of cirrhosis patients at an early phase. Therefore, it seems especially important to deepen the understanding of cardiac electrophysiological and ECG changes of cirrhosis patients.
		2018 Vol. 27 (1): 63-66 [Abstract] ( 732 ) [HTML 1KB] [ PDF 982KB] ( 1477 )

	67	Research advances of telemedicine in atrial fibrillation
		SHI Qing-Qing, GU Xiang
		With the continuous development of Internet technology and extensive popularization of smartphones, remote monitoring and management of atrial fibrillation(AF) provide a completely new clinic model for patients. It helps to identify AF and evaluate its severity as early as possible to perform long term continuous monitoring and management among the highrisk group of AF. Timely intervention can reduce incidences of cardiovascular adverse events, and related complications including heart failure, disability and premature death, so as to ultimately reduce medical cost, increase social productivity and improve patients' quality of life. This paper mainly introduces the research status and future prospect of telemedicine in the field of AF.
		2018 Vol. 27 (1): 67-70 [Abstract] ( 651 ) [HTML 1KB] [ PDF 962KB] ( 2004 )

	71
		LI Xing-Jie, LIU Shou-Zhen

		2018 Vol. 27 (1): 71-73 [Abstract] ( 629 ) [HTML 1KB] [ PDF 4485KB] ( 1446 )

	74
		XU Si-Yi, YING Xu-Qing, CAI Wei-Xun

		2018 Vol. 27 (1): 74-76 [Abstract] ( 616 ) [HTML 1KB] [ PDF 4109KB] ( 1333 )

	76


		2018 Vol. 27 (1): 76- [Abstract] ( 425 ) [HTML 1KB] [ PDF 997KB] ( 987 )

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		2018 Vol. 27 (1): 77- [Abstract] ( 458 ) [HTML 1KB] [ PDF 832KB] ( 1035 )

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		2018 Vol. 27 (1): 78- [Abstract] ( 436 ) [HTML 1KB] [ PDF 932KB] ( 868 )

	79


		2018 Vol. 27 (1): 79- [Abstract] ( 497 ) [HTML 1KB] [ PDF 929KB] ( 966 )

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