Abstract：
:We examined the clinical characteristics and electrocardiographic findings of 7 patients having the acquired long QT syndrome who developed torsades de pointes while receiving no antiarrhythmic drugs. A total of 43 episodes of torsades de pointes were documented among these patients. Underlying heart diseases were present in 6 patients and hypopotassemia (< or = 3.3 mEq/l) in 4. Four had bradycardia (< or = 52 beats/min) immediately before the development of torsades de pointes. The QTc intervals measured immediately before the episodes of torsades de pointes were significantly longer than those 6-24 hours before the episodes (0.69 +/- 0.10 vs 0.56 +/- 0.10 sec, p < 0.05), while heart rates did not differ significantly between these 2 periods (54 +/- 12 vs 58 +/- 15 beats/min). The ventricular rate of torsades de pointes was 192 +/- 24 beats/min. A "long-short initiating cycle" was noted in all 43 episodes, and the initiating premature ventricular beat (PVB) showed the "R on T(U)" phenomenon in 42 of the episodes. A notched T-U complex due to a prominent slow wave (U wave) at the end of the T wave was noted in 5 patients immediately before the episodes of torsades de pointes. Prolongation of the preceding RR interval was directly related to the increase of the U wave amplitude, which caused an increased likelihood of the occurrence of PVBs near the peak of the U wave. Torsades de pointes developed from the largest U wave. Direct current cardioversion was transiently effective for treating torsades de pointes, and intravenous lidocaine, atropine and verapamil were effective in some cases.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
J Cardioljournal_title
Journal of cardiologyauthors
Takahashi N,Ito M,Inoue T,Koumatsu K,Takeshita Y,Tsumabuki S,Tamura M,Inoue K,Maeda T,Saikawa Tsubject
Has Abstractpub_date
1993-01-01 00:00:00pages
99-106issue
1eissn
0914-5087issn
1876-4738journal_volume
23pub_type
杂志文章abstract：:A 57-year-old man was admitted under a diagnosis of myocardial infarction. Cardiac catheterization revealed total occlusions of the right coronary artery and the left anterior descending artery, and ventriculography showed aneurysmal change in the anterior and septal segments. Circulatory support was introduced with i...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2004-05-01 00:00:00
abstract：BACKGROUND:Arterial hypertension is an established risk factor for acute coronary syndrome (ACS). Multidetector computed tomography (MDCT) is an accurate and less invasive technique for assessment of the degree of coronary artery luminal narrowing and characterization of coronary atherosclerosis. We therefore aimed to ...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：10.1016/j.jjcc.2011.11.010
更新日期：2012-03-01 00:00:00
abstract：OBJECTIVES:The relationship between the duration of arrhythmia and the subsequent long-term efficacy of disopyramide in preventing atrial fibrillation was investigated in patients with symptomatic paroxysmal and persistent atrial fibrillation. METHODS:A total of 60 patients (39 men, 21 women, mean age 65 +/- 11 years)...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2003-09-01 00:00:00
abstract：:Inherited primary arrhythmia syndromes (IPAS) may result in ventricular tachycardia or ventricular fibrillation by some genetic disorders, leading to sudden cardiac death. IPAS are also called "channelopathies" since many of these are caused by an abnormality in myocardial ion channels. Congenital long-QT syndrome (LQ...
journal_title：Journal of cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.jjcc.2019.01.009
更新日期：2019-05-01 00:00:00
abstract：:To evaluate noninvasively the patency of aortocoronary bypass grafts using the left internal mammary artery (LIMAG), color flow mapping Doppler echocardiography was performed in 23 consecutive patients. There were 22 males and one female. The average number of involved coronary arteries per patient was 2.5 +/- 0.6. Th...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1989-03-01 00:00:00
abstract：OBJECTIVES:Serum malondialdehyde-modified low-density lipoprotein(MDA-LDL) was measured as a marker of oxidative stress, and the changes in serum MDA-LDL compared in patients with acute myocardial infarction and stable angina pectoris treated by percutaneous transluminal coronary angioplasty (PTCA). METHODS:Forty-one ...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2001-08-01 00:00:00
abstract：:The influence of complete revascularization on long-term outcome of patients with multivessel coronary artery disease undergoing percutaneous transluminal coronary angioplasty (PTCA) was determined by analysis of 10-year survival in 167 consecutive patients treated at Juntendo University Hospital during 1984-1993. For...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1997-05-01 00:00:00
abstract：BACKGROUND:Although the occurrence of no-reflow during percutaneous coronary intervention (PCI) has been shown to be associated with worse short- and long-term clinical outcomes, the clinical relevance of preventing flow deterioration by using the filter-based distal protection devices (DPDs) is controversial. We inves...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：10.1016/j.jjcc.2015.06.015
更新日期：2016-05-01 00:00:00
abstract：OBJECTIVES:Brain natriuretic peptide (BNP) and QRS duration have been reported as independent predictors for cardiac events in patients with heart failure. The present study investigated the relationships between BNP and QRS duration to assess the prognostic value in patients with heart failure. METHODS:We prospective...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2006-06-01 00:00:00
abstract：:Diabetes mellitus may be an independent risk factor for disturbance of cardiac function, but the detailed mechanism remains unclear. In the present study, histological examinations were carried out on 25 hearts from diabetes model rats as well as myocardial biopsy materials from patients with diabetes (n = 25). The me...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
abstract：OBJECTIVES:Rapid mobilization and discharge following rapid acute phase reperfusion are recommended for elderly patients with acute myocardial infarction to achieve a better outcome and performance. The safety and efficacy of new and old treatment protocols were retrospectively compared for patients with acute myocardi...
journal_title：Journal of cardiology
pub_type： 临床试验,杂志文章
doi：
更新日期：2000-10-01 00:00:00
abstract：:This is a report of 3 cases of cardiac sarcoidosis. None of the 3 patients had other overt systemic involvement. Multinucleated giant cells and non-caseating epithelial cell granulomas with small lymphocytic infiltrations were detected in the endomyocardial biopsy specimen. Some focal left ventricular wall motion abno...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：OBJECTIVES:To evaluate the effectiveness of pulmonary vein orifice cryoablation (PVOC) for atrial fibrillation during mitral valve surgery. METHODS:Twenty-two patients (12 men and 10 women) with mitral valve disease complicated with atrial fibrillation have been treated by PVOC since March 2000. During the mitral valv...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2006-05-01 00:00:00
abstract：:The pathogenesis of low cardiac output failure (LOF) immediately after open heart surgery was studied in 41 patients with LOF and 15 control patients without LOF using echocardiography. In 35 patients, transesophageal echocardiography was also performed. Left ventricular (LV) contraction was impaired in 28 of the 41 L...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is an inherited genetic disease caused by defective desmosomal proteins, and it has typical histopathological features characterized by predominantly progressive fibro-fatty infiltration of the right ventricle. Clinical presentations of ARVD/C vary fro...
journal_title：Journal of cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.jjcc.2014.12.023
更新日期：2015-06-01 00:00:00
abstract：:The effects of elective percutaneous transluminal coronary angioplasty (PTCA) performed one month after coronary reperfusion therapy in patients with acute myocardial infarction (AMI) were observed using exercise Tl-201 myocardial scintigraphy performed before and after PTCA. Myocardial perfusion in Tl-201 scintigraph...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:A histopathological study of coronary arteries in patients with acute coronary syndromes was carried out. The results of this study are as follows: 1. A high incidence of thrombus formation, corresponding to the site of the infarction, was observed in cases with acute myocardial infarction. 2. Coronary thrombi contain...
journal_title：Journal of cardiology
pub_type： 杂志文章,评审
doi：
更新日期：1999-03-01 00:00:00
abstract：:To assess tricuspid regurgitation (TR) in patients with permanent transvenous right ventricular (RV) pacing, we performed phonocardiographic, contrast and pulsed Doppler echocardiographic studies in 18 patients with transvenous leads for RV pacing. In addition, a pathological study was performed on 26 autopsy cases wi...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1987-06-01 00:00:00
abstract：:The number of elderly patients with acute myocardial infarction has been increasing. However, the choice of treatment remains controversial. Medical records of 310 consecutive patients with acute myocardial infarction were reviewed. Two retrospective analyses were performed. 1) Patients were divided into the elderly g...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2000-04-01 00:00:00
abstract：BACKGROUND:The correlations between genotype and phenotype in hypertrophic cardiomyopathy (HCM) have not been established. Mutation of α-actin gene (ACTC1) is a rare cause of HCM. This study aimed to explore novel genotype-phenotype correlations in HCM patients with the variants in ACTC1 and myosin-binding protein (MYB...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：10.1016/j.jjcc.2018.09.005
更新日期：2019-05-01 00:00:00
abstract：:The correlation between the time-course changes in the serum concentration of myosin light chain 1 (ML-1) and left ventricular (LV) function was investigated in 37 patients with initial anterior acute myocardial infarction (AMI) after successful reperfusion. All patients were confirmed to have coronary arteries recana...
journal_title：Journal of cardiology
pub_type： 临床试验,杂志文章
doi：
更新日期：1995-07-01 00:00:00
abstract：BACKGROUND:On March 11, 2011, the Tohoku district was struck by the most powerful known earthquake to hit Japan. Although stress-induced heart diseases rise after strong psychosocial stress, little is known about the characteristics of heart failure (HF) caused by psychosocial stress related to earthquakes. METHODS:We...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：10.1016/j.jjcc.2013.02.015
更新日期：2013-07-01 00:00:00
abstract：:The value of recanalization therapy in restoring risk area after acute coronary occlusion is well documented. However, some cases show poor recovery of left ventricular function regardless of early reperfusion. This study investigated the use of ST segment re-elevation immediately after recanalization in patients with...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
abstract：:To ascertain the optimal time for surgery in chronic aortic regurgitation (AR), 66 patients with and without surgical correction were reviewed from the standpoint of left ventricular (LV) function based on their serial echocardiographic studies. Aggravation of the clinical status was usually associated with enlarged L...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1987-09-01 00:00:00
abstract：:Failure to control the ventricular rate in atrial fibrillation (AF) can be treated by radiofrequency (RF), ablation or modification of atrioventricular (AV) node. AV nodal ablation with pacemaker and AV nodal modification are associated with significant improvement in symptoms and quality of life. But there is no evid...
journal_title：Journal of cardiology
pub_type： 杂志文章,评审
doi：
更新日期：1999-03-01 00:00:00
abstract：:A number of devices can now provide mechanical circulatory support (MCS) to patients with acute cardiogenic shock (CS) and chronic end-stage heart failure (HF). Women differ from men in pathophysiology and natural history of CS and HF, and are usually sicker at admission. Current evidence suggests that women benefit a...
journal_title：Journal of cardiology
pub_type： 杂志文章,评审
doi：10.1016/j.jjcc.2020.07.012
更新日期：2020-08-29 00:00:00
abstract：BACKGROUND:Both the prevalence of atrial fibrillation and coronary artery disease (CAD) is increasing in aged societies. However, limited data are available regarding the prevalence of CAD and the incidence of coronary events in Japanese patients with nonvalvular atrial fibrillation (NVAF). METHODS AND RESULTS:The dat...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：10.1016/j.jjcc.2013.08.007
更新日期：2014-02-01 00:00:00
abstract：:To ascertain the relationship between the types of myocardial perfusion defects and supraventricular and ventricular tachyarrhythmias in hypertrophic cardiomyopathy (HCM), 26 patients were studied with dipyridamole-loading thallium-201 scintigraphy and the results were correlated with 24-hour ambulatory ECG, echocardi...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
abstract：:Improvement in left ventricular function following intra-aortic balloon pumping (IABP) in 15 patients (aged 51 to 86 years) after coronary artery bypass grafting was evaluated. Using transesophageal atrial echocardiography, the mitral flow velocity integrals in the rapid filling phase (IntR) and in the contraction pha...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：OBJECTIVES:To determine whether drug infusions at ambulatory clinic in patients with end stage congestive heart failure are safe and reduce the period of hospitalization. METHODS:Between May 2000 and November 2006, 21 ambulatory patients with end stage congestive heart failure were treated with infusions of the natriu...
journal_title：Journal of cardiology
pub_type： 杂志文章
doi：
更新日期：2007-05-01 00:00:00
