JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

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JOURNAL OF PRACTICAL ELECTROCARDIOLOGY

	2014 Vol.23 Issue.1 Published 2014-02-28

Article

	5	Advances in the diagnosis and treatment of nonsustained ventricular tachycardia

		Nonsustained ventricular tachycardia(NSVT) has been recorded in a wide range of conditions, from apparently healthy individuals to patients with heart diseases. In the absence of heart disease, the prognosis of NSVT patients is debatable. It indicates increased cardiovascular mortality within the next decades if NSVT is detected during exercise, especially in exercise recovery. In trained athletes, NSVT is considered benign when suppressed by exercise. In acute coronary syndrome patients with non-ST-segment elevation, NSVT occurring beyond 48 h after admission indicates an increased risk of cardiac sudden death, especially when associated with myocardial ischemia. As far as patients with acute myocardial infarction are concerned, NSVT has an adverse prognosis when detected the first 13 to 24 h later after admission. In patients with myocardial infarction treated with reperfusion and beta-blockers, NSVT is not an independent predictor of long-term mortality when other covariates such as left ventricular ejection fraction are taken into account. In hypertrophic cardiomyopathy and most genetic channelopathies patients, NSVT carries prognostic significance, whereas its independent prognostic ability in ischemic heart failure and dilated cardiomyopathy has not been established. The management of patients with NSVT is aimed at treating the underlying heart diseases.
		2014 Vol. 23 (1): 5-11 [Abstract] ( 1561 ) [HTML 1KB] [ PDF 1825KB] ( 1268 )

	12	Clinical analysis on the changes of ambulatory electrocardiography in 126 patients with thoracic neoplasm after intensity modulated radiation therapy

		ObjectiveTo explore the influence of intensity modulated radiation therapy(IMRT) on ambulatory electrocardiography(AECG), for patients with thoracic tumors at different stages, for different types of neoplasms and with different therapies.MethodsOne hundred and twentysix patients with thoracic tumors were enrolled in the research who had accepted IMRT at the Clinical Cancer Center in our hospital.According to the types of neoplasms, they were divided into 3 groups: left lung cancer group(43 cases), left mastocarcinoma group(39 cases) and esophageal cancer group(44 cases).And by the therapies, they were classified into radiotherapy group(36 cases), synchronal chemoradiation group(46 cases) and equential chemoradiation group(44 cases).All groups were monitored by 24hour AECG before, after and half a year after the treatment, and then compared about the abnormity incidence rates of AECG as well as the newly increased rates separately in the above two classifications.ResultsThe incidences of occasional atrial or ventricular arrhythmias and ST-T changes increased significantly after treatment compared with those before, and the differences were statistically significant(P<0.05).There was no statistical significance in the difference of the two AECG indexes before and half a year after therapy(P>0.05).There was also no statistical significance in the differences of newly increased abnormity incidence rates of 3 groups of patients, if we respectively made comparisons among different types of thoracic tumors and different therapies(P>0.05).ConclusionThe AECG changes of patients with thoracic tumors mostly occur at the early stage of IMRT and are reversible.Due to the precision of the therapy, there is no significant difference for different types of thoracic neoplasms in AECG changes after radiotherapy.The chemotherapy combined with Paclitaxel plus Taxanes has less effect on AECG with relatively low cardiac toxicity.
		2014 Vol. 23 (1): 12-16 [Abstract] ( 1371 ) [HTML 1KB] [ PDF 1222KB] ( 1189 )

	17	The diagnostic value of transesophageal atrial pacing stress test combined with treadmill exercise test in male patients with coronary heart disease

		ObjectiveTo investigate the diagnostic value of transesophageal atrial pacing stress test combined with treadmill exercise test in male patients with coronary disease. MethodsEightytwo male patients with suspected coronary artery disease underwent coronary arteriography and transesophageal atrial pacing stress test combined with treadmill exercise test 1 month before or after coronary arteriography. The degree and range of coronary artery stenosis assessed in diameter method was compared between results of coronary arteriography and transesophageal atrial pacing stress test combined with treadmill exercise test. ResultsWith the result of coronary arteriography as a criterion, transesophageal atrial pacing stress test combined with treadmill exercise test had a sensitivity of 72.9% in diagnosing coronary disease, a specificity of 52.6%, a positive predictive rate of 90.4% and a negative predictive rate of 78.7%. It also revealed that in the combined method, the more the coronary artery stenosis leads were, the earlier ST segment depressions appeared with deeper depression degree and longer duration(P<0.001). Patients with positive results of coronary arteriography and negative ones in the combined method were mostly single vessel diseased or slightly diseased.ConclusionsThe transesophageal atrial pacing stress test combined with treadmill exercise test is simple, easy to practice and noninvasive, which can increase the diagnostic rate of coronary disease and preliminarily estimate the degree of coronary artery stenosis.
		2014 Vol. 23 (1): 17-20 [Abstract] ( 1311 ) [HTML 1KB] [ PDF 1273KB] ( 1169 )

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		2014 Vol. 23 (1): 20-20 [Abstract] ( 762 ) [HTML 1KB] [ PDF 390KB] ( 1352 )

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		2014 Vol. 23 (1): 20-20 [Abstract] ( 620 ) [HTML 1KB] [ PDF 390KB] ( 1288 )

	21	Electrophysiological studies on atrioventricular conduction function with transesophageal atrial pacing

		ObjectiveTo determine the atrioventricular conduction function and its influential factors by measuring electrophysiological parameters of atrioventricular conduction system with transesophageal atrial pacing(TEAP). MethodsOne hundred and twentyfour patients were enrolled in the research and carried out inspection of TEAP. Among those patients, some underwent examination of functions of atrioventricular conduction and atrionector because of bradycardia while some were diagnosed with sychnosphygmia. All selected patients had taken routine and ambulatory electrocardiography before TEAP, with antiarrhythmic drugs withdrawn for 5 halflife periods. Seventyfour patients whose function of atrioventricular conduction had decreased after TEAP were enrolled in the atropine tests and made a contrast analysis before and after.ResultsThe detection rate of atrioventricular conduction of TEAP was significantly higher than that inspected by routine and ambulatory electrocardiography. After intravenous injection of atropine, 69 cases improved significantly while 5 cases seemed no obvious improvement and switched to pacemaker implantation. Besides, atrioventricular nodal reentrant tachycardia was induced from 1 case after intravenous injection of atropine.ConclusionsTEAP has important clinical value in early detection and differential diagnosis of functional or pathological atrioventricular block.
		2014 Vol. 23 (1): 21-23 [Abstract] ( 1606 ) [HTML 1KB] [ PDF 969KB] ( 1297 )

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		2014 Vol. 23 (1): 23-23 [Abstract] ( 731 ) [HTML 1KB] [ PDF 405KB] ( 1544 )

	24	The predictive value of P-wave dispersion on the prognosis and complication of paroxysmal atrial fibrillation for cerebral apoplexy patients

		Objective To investigate the predictive value of P-wave dispersion on the prognosis and paroxysmal atrial fibrillation(PAF) of cerebral apoplexy patients.MethodsSeventytwo patients with cerebral apoplexy were enrolled in the research, among whom 36 cases with PAF and another 36 cases without PAF were separately regarded as group A and group B. Both of the two groups underwent 12 lead electrocardiogram(ECG), colored Doppler echocardiography and 24hour Holter inspection, with the maximum P-wave duration (Pmax), the minimum P-wave duration(Pmin) measured and P-wave dispersion(Pd), left atrial diameter(LAD) and left ventricular ejection fraction(LVEF) calculated. The results were statistically analyzed by PEMS 3.1 for Windows.ResultsBetween the two groups, it revealed significant statistical differences in Pmax, Pd, LAD, LVEF and the number of cases of atrial premature beats as well as paroxysmal atrial tachycardia(P<0.05).ConclusionP-wave dispersion serves as a reliable marker for predicting the complication of paroxysmal atrial fibrillation for patients with cerebral apoplexy and is also significant for prognosis observation in some extent.
		2014 Vol. 23 (1): 24-26 [Abstract] ( 1281 ) [HTML 1KB] [ PDF 832KB] ( 1224 )

	27	Arrhythmia monitoring of patients with lung cancer after radiotherapy ,chemotherapy and operation

		Objective To discuss the changes of arrhythmia and heart rate variability of patients with lung cancer after radiotherapy/chemotherapy and operation, provides certain reference for clinical. Methods150 cases of lung cancer patients after radiotherapy/chemotherapy or operation monitoring the routine ECG and 24 hour Holter, capture the changes of ECG and heart rate variability of heart injury in the early stage. Results125 cases of patients with lung cancer after radiotherapy/chemotherapy or operation display cardiac arrhythmia (83.33%); heart rate variability of 45 cases in normal subjects (30%),of 105 cases were lower(70%).Treatment can cause arrhythmia, the difference of the incidence between all treatment have no statistical significance(P>0.05).ConclusionEarly detection of ECG change of heart injury after radiotherapy/chemotherapy or operation , should pay attention to all kinds of changes in electrocardiogram, timely adjustment for followup treatment and timely implementation of the intervention, prevent the complications caused by radiotherapy/chemotherapy or operation, in order to improve the life quality of patients.
		2014 Vol. 23 (1): 27-29 [Abstract] ( 1429 ) [HTML 1KB] [ PDF 1853KB] ( 1177 )

	30	Analysis of electrocardiograms of complete left bundle branch block and right bundle branch block

		Objective To know the incidence rates of complete left bundle branch block and right bundle branch block for different genders and ages. MethodsThis paper analyzed 108 610 cases of routine electrocardiogram results and statistically compared the incidence rates of complete left bundle branch block and right bundle branch block for different genders and ages. ResultsAmong the 108 610 outpatients and inpatients, there were 19 cases with complete left bundle branch block, accounting for 0.18% and 3 794 cases with right bundle branch block, accounting for 3.49%. As the incidence rates of complete left bundle branch block were concerned, there was no statistically significant difference between different genders(χ2=1.707, P=0.191) while statistically significant difference existed between different ages(χ2=209.874, P<0.05). For the incidence rates of right bundle branch block, there was statistically significant difference both between different genders and ages(χ2=986.046, P<0.05; χ2=1483.286，P<0.05). ConclusionSince the incidence rates of complete left bundle branch block and right bundle branch block are high in the elderly over 60 years old, regular routine electrocardiogram inspection is a must in order to discover abnormal situation in time and take corresponding measures.
		2014 Vol. 23 (1): 30-32 [Abstract] ( 3579 ) [HTML 1KB] [ PDF 731KB] ( 1222 )

	33	Analysis about the electrocardiogram features of 380 cases of the second-third trimester pregnant women

		ObjectiveTo investigate the electrocardiogram(ECG) features of pregnant women during the secondthird trimester gestation.MethodsThe 12 lead ECG machine automatically and synchronously traced ECGs of 380 cases of secondthird trimester pregnant women and 300 healthy women， and their ECGs were also compared.ResultsThere were 266 cases of ECG abnormality inspected from 380 pregnant women(accounting for 70%), among which arrhythmia, short PR intervals and STT changes occurred in 122, 29 and 63 cases respectively.ConclusionCompared with healthy women, the incidence of ECG abnormality of pregnant women during the secondthird trimester gestation is significantly higher, especially the incidence of arrhythmia.
		2014 Vol. 23 (1): 33-35 [Abstract] ( 1057 ) [HTML 1KB] [ PDF 905KB] ( 1328 )

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		2014 Vol. 23 (1): 35-35 [Abstract] ( 694 ) [HTML 1KB] [ PDF 269KB] ( 1038 )

	36	Ambulatory Electrocardiography analysis of 29 patients with cardiac syncope

		ObjectiveTo study the ocurrence of arrhythmia of patients with cardiac syncope and specific highrisk electrocardiographic representations. MethodsTwenty-nine patients suspected with cardiac syncope underwent 24 h ambulatory electrocardiography inspection.ResultsSerious arrhythmias occurred in the selected 29 cases, among whom there were 15 cases with cardiac syncope. Cardiac syncope failed to represent itself on patients whose R-R interval<3.0 s while it occurred in patients whose R-R interval>3.0 s. ConclusionArrhythmia especially chronic arrhythmia is the main cause of cardiac syncope. Generally, for patients with organic heart disease, ambulatory electrocardiography inspection could help in finding reliable pathogeny and choosing corresponding treatment.
		2014 Vol. 23 (1): 36-37 [Abstract] ( 1343 ) [HTML 1KB] [ PDF 603KB] ( 1220 )

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		2014 Vol. 23 (1): 38-42 [Abstract] ( 1067 ) [HTML 1KB] [ PDF 1619KB] ( 1483 )

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		2014 Vol. 23 (1): 43-47 [Abstract] ( 1297 ) [HTML 1KB] [ PDF 1569KB] ( 1337 )

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		2014 Vol. 23 (1): 47-47 [Abstract] ( 800 ) [HTML 1KB] [ PDF 350KB] ( 1295 )

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		2014 Vol. 23 (1): 48-53 [Abstract] ( 1246 ) [HTML 1KB] [ PDF 1798KB] ( 1303 )

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		2014 Vol. 23 (1): 53-53 [Abstract] ( 755 ) [HTML 1KB] [ PDF 296KB] ( 1337 )

	54	Advances in the research about true complete left bundle branch block and super-response of cardiac resynchronization therapy

		True complete left bundle branch block(t-CLBBB) is proposed as a new concept, which not only promoted the development of Electrocardiology, but also enriched the content of cardiac resynchronization therapy(CRT) in the treatment of heart failure. It furtherly became a new predictive factor of super-response to CRT for patients with chronic heart failure and t-CLBBB.
		2014 Vol. 23 (1): 54-57 [Abstract] ( 1477 ) [HTML 1KB] [ PDF 1201KB] ( 1438 )

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		2014 Vol. 23 (1): 57-57 [Abstract] ( 696 ) [HTML 1KB] [ PDF 270KB] ( 971 )

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		2014 Vol. 23 (1): 58-65 [Abstract] ( 1448 ) [HTML 1KB] [ PDF 2406KB] ( 1260 )

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		2014 Vol. 23 (1): 66-67 [Abstract] ( 1473 ) [HTML 1KB] [ PDF 1736KB] ( 1294 )

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		2014 Vol. 23 (1): 68-71 [Abstract] ( 1367 ) [HTML 1KB] [ PDF 1154KB] ( 1188 )

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		2014 Vol. 23 (1): 72-74 [Abstract] ( 1205 ) [HTML 1KB] [ PDF 981KB] ( 1456 )

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		2014 Vol. 23 (1): 75-76 [Abstract] ( 1250 ) [HTML 1KB] [ PDF 770KB] ( 1159 )

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