Abstract:
:The electrocardiographic patterns, observed during 24-h Holter monitoring, of 10 patients (mean age 35 +/- 22 years) with first and second degree A-V block due to dual A-V nodal pathways are reported. Recordings were selected according to the presence of: sudden and persistent prolongation of the PR interval: sudden normalization of the PR interval: 'atypical' Wenckebach sequences showing sudden and pronounced prolongation of any PR interval prior to the blocked P wave. Besides the already recognized pattern, new aspects were identified: (1) Wenckebach sequences in the slow and fast pathways characterized by a progressive increase in the PR interval until a blocked P wave occurred during long and short PR interval periods, respectively; (2) Wenckebach periods first in the slow and then in the fast pathway; (3) 2:1 A-V block with a normal PR interval in the conducted beat after a Wenckebach sequence in the slow pathway; (4) Wenckebach in the fast pathway and, subsequently, in the slow one characterized by a slight prolongation of the PR interval for some beats followed by a sudden and pronounced increase in the PR interval of one beat and a subsequent progressive slight PR prolongation until a blocked P wave occurred; (5) Wenckebach sequence in the fast pathway with subsequent conduction over the slow pathway without a blocked P wave; (6) blocked P waves during both long and short PR interval periods with slight prolongation of the preceding PR interval. The electrophysiological mechanisms involved in these electrocardiographic patterns together with the nature (anatomical or functional) of the intranodal pathways and the clinical significance of this type of block are discussed.
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Di Biase M,Tritto M,Sabato G,Pitzalis MV,Rizzon Pdoi
10.1093/oxfordjournals.eurheartj.a059904subject
Has Abstractpub_date
1991-03-01 00:00:00pages
368-77issue
3eissn
0195-668Xissn
1522-9645journal_volume
12pub_type
杂志文章abstract::Type 2 diabetes mellitus (T2DM) is characterized by multiple pathophysiologic abnormalities. With time, multiple glucose-lowering medications are commonly required to reduce and maintain plasma glucose concentrations within the normal range. Type 2 diabetes mellitus individuals also are at a very high risk for microva...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehv239
更新日期:2015-09-07 00:00:00
abstract::In the initial phase of heart failure, cardiac output and pressure are maintained by increasing sympathetic drive and by cell hypertrophy. Elevated end-diastolic volume, a reduced ejection fraction and a higher filling pressure also occur. Only in more severe heart failure, when cardiac output cannot be maintained, do...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/16.suppl_f.2
更新日期:1995-07-01 00:00:00
abstract:UNLABELLED:Left atrial spontaneous echo contrast, detected by transoesophageal echocardiography in patients with non-valvular atrial fibrillation reflects slow blood flow and is associated with an increased risk of cardio-embolism. The purpose of this study was to find echo/Doppler predictors of left atrial spontaneous...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a060428
更新日期:1994-11-01 00:00:00
abstract::To determine the neurohormonal response to angiotensin-converting enzyme (ACE) inhibition after acute myocardial infarction, 36 patients presenting within 6 h of the onset of chest pain were studied in a single regional cardiology service. In this double-blind study, 13 patients were randomized to receive captopril, 1...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/oxfordjournals.eurheartj.a060995
更新日期:1995-06-01 00:00:00
abstract::Lyme borreliosis (LB) is a multisystem disorder that may cause self-limiting or chronic diseases of the skin, the nervous system, the joints, heart and other organs. The aetiological agent is the recently discovered Borrelia burgdorferi. In 1980, cardiac manifestations of LB were first described, including acute condu...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/12.suppl_d.73
更新日期:1991-08-01 00:00:00
abstract::In the Danish Verapamil Infarction Trial II (DAVIT II) intervention with verapamil significantly decreased the first major event rate (i.e. reinfarction or death) in patients recovering from acute myocardial infarction. As calcium channel antagonists might have a detrimental effect in patients with heart failure, the ...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/14.4.540
更新日期:1993-04-01 00:00:00
abstract:OBJECTIVES:The primary objectives of this study were to assess the feasibility of temperature-controlled radiofrequency catheter ablation of left and right sided manifest accessory pathways in patients with Wolff-Parkinson-White syndrome and to gain more insights into biophysical aspects of temperature-controlled cathe...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a014878
更新日期:1996-03-01 00:00:00
abstract:AIMS:Midwall myocardial fibrosis on cardiovascular magnetic resonance (CMR) is a marker of early ventricular decompensation and adverse outcomes in aortic stenosis (AS). We aimed to develop and validate a novel clinical score using variables associated with midwall fibrosis. METHODS AND RESULTS:One hundred forty-seven...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehv525
更新日期:2016-02-21 00:00:00
abstract:AIMS:Although regular physical activity has beneficial cardiovascular effects, exercise can trigger an acute cardiac event. We aimed to determine the incidence and prognosis of exercise-related out-of-hospital cardiac arrest (OHCA) in the general population. METHODS AND RESULTS:We prospectively collected all OHCAs in ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/eht401
更新日期:2013-12-01 00:00:00
abstract:AIMS:The aim of this study was to assess the risk of intra-aortic balloon counterpulsation and to identify clinical and procedural variables that would predict complications. METHODS AND RESULTS:We analysed 381 consecutive patients who were treated between 1977 and 1995 at our catheterization laboratory and/or medical...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1053/euhj.1997.0802
更新日期:1998-03-01 00:00:00
abstract::To determine the effects of acute myocardial infarction on the extent and distribution of mural stress on surviving myocardial tissue, coronary artery occlusion was surgically produced in rats. Following haemodynamic measurements in vivo, the characteristics of cardiac anatomy were determined and found to consist of a...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/16.suppl_n.37
更新日期:1995-12-01 00:00:00
abstract:AIMS:Prospective studies indicate that apolipoprotein measurements predict coronary heart disease (CHD) risk; however, evidence is conflicting, especially in the US. Our aim was to assess whether measurements of apolipoprotein B (apoB) and apolipoprotein A-I (apoA-I) can improve the ability to predict CHD death beyond ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehn347
更新日期:2009-03-01 00:00:00
abstract:AIMS:Despite the known benefits of regular exercise, the reasons why many coronary heart disease (CHD) patients engage in little physical activity are not well understood. This study identifies factors associated with low activity levels in individuals with chronic CHD participating in the STABILITY study, a global cli...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/eht258
更新日期:2013-11-01 00:00:00
abstract:AIMS:We evaluated the feasibility and the acute performance of the everolimus-eluting bioresorbable vascular scaffolds (BVS) for the treatment of patients presenting with ST-segment elevation myocardial infarction (STEMI). METHODS AND RESULTS:The present investigation is a prospective, single-arm, single-centre study,...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/eht546
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:Electrocardiographic abnormalities and premature ventricular contractions are common in athletes and are generally benign. However, the specific outcome of high-level endurance athletes with frequent and complex ventricular arrhythmias is unclear. Also, information on the predictive accuracy of different inv...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/s0195-668x(03)00282-3
更新日期:2003-08-01 00:00:00
abstract:AIM:It has recently been suggested that exercise testing may be more valuable prognostically than it is diagnostically in apparently healthy subjects. We wanted to compare the accuracy of CHD risk assessment based on classical risk factors with an assessment also based on multiple exercise test parameters. METHODS AND...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.04.009
更新日期:2004-06-01 00:00:00
abstract::We have evaluated overall and cardiac sympathetic activity in 47 patients undergoing coronary angiography, 27 with stable angina of at least 3 months duration, and 20 with unstable ischaemic symptoms within this period. Cardiac and overall sympathetic activity were assessed using radiotracer noradrenaline kinetic tech...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/14.6.751
更新日期:1993-06-01 00:00:00
abstract::In order to assess the value of pulsed Doppler echocardiography in detection of valvular regurgitation, 63 patients were evaluated for aortic and/or mitral regurgitation using pulsed Doppler echocardiography and selective cineangiography. The Doppler study was considered as positive when a turbulent flow was detected ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a061674
更新日期:1984-05-01 00:00:00
abstract::Transthoracic echocardiography and continuous wave Doppler were prospectively performed in 132 out-patients with suspicion of pulmonary embolism, and who had no previous history of severe cardiac or pulmonary disease. Bedside echocardiography determined diagnosis other than pulmonary embolism in 55 patients. Further s...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a014946
更新日期:1996-05-01 00:00:00
abstract::Transluminal coronary angioplasty (PTCA) is a well defined controlled model inducing regional myocardial ischaemia in man. Direct cardiac anti-ischaemic effects of anti-anginal drugs can be assessed by intracoronary injection of small doses which do not affect systemic parameters. Trimetazidine (TMZ) has recently been...
journal_title:European heart journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/eurheartj/14.suppl_g.6
更新日期:1993-11-01 00:00:00
abstract:AIMS:Statins protect against cardiovascular-related mortality but induce skeletal muscle toxicity. To investigate mechanisms of statins, we tested the hypothesis that statins optimized cardiac mitochondrial function but impaired vulnerable skeletal muscle by inducing different level of reactive oxygen species (ROS). M...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehr224
更新日期:2012-06-01 00:00:00
abstract:BACKGROUND:Recently, a new exercise test criterion diagnosing coronary artery disease was proposed, based on a composite of changes in Q-, R- and S-waves: the QRS score. We compared this new criterion with conventional ST-segment depression and other compositions of Q-, R- and S-wave changes in patients and normals and...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a014936
更新日期:1996-05-01 00:00:00
abstract::Myocardial bridging of the left anterior descending coronary artery producing complete systolic occlusion was demonstrated in a patient with hypertrophic cardiomyopathy, who had localized myocardial hypertrophy in the lateral left ventricular wall outside the territory of that artery. Although a cause and effect relat...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/8.7.793
更新日期:1987-07-01 00:00:00
abstract::The concentration of cholesterol in peripheral lymph is roughly one tenth of that in the blood plasma of the same subject. In lymph, there is virtually no very low density lipoprotein (VLDL), probably due to low permeability of the vascular endothelium for particles of this size. More than 95% of apo B-containing lipo...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/11.suppl_e.230
更新日期:1990-08-01 00:00:00
abstract:AIMS:There have been substantial declines in cerebrovascular disease mortality across much of Europe, mirroring trends in deaths from cardiovascular disease as a whole. No study has investigated trends in cerebrovascular disease, and its subtypes within all European countries. This study aimed to examine sex-specific t...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehy378
更新日期:2019-03-01 00:00:00
abstract::Pulmonary disease is common in patients with heart failure, through shared risk factors and pathophysiological mechanisms. Adverse pulmonary vascular remodelling and chronic systemic inflammation characterize both diseases. Concurrent chronic obstructive pulmonary disease presents diagnostic and therapeutic challenges...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/eht192
更新日期:2013-09-01 00:00:00
abstract:AIMS:Atrial fibrillation (AF) is associated with abnormal sarcoplasmic reticulum (SR) calcium release, which is promoted by adenosine A(2A) receptor (A(2A)R) activation. Here, we tested the hypothesis that abnormal calcium release in AF is linked to A(2A)R remodelling. METHODS AND RESULTS:Western blotting and quantita...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehq464
更新日期:2011-03-01 00:00:00
abstract:AIM:To evaluate the effect of alirocumab on frequency of standard apheresis treatments [weekly or every 2 weeks (Q2W)] in heterozygous familial hypercholesterolaemia (HeFH). METHODS AND RESULTS:ODYSSEY ESCAPE (NCT02326220) was a double-blind study in 62 HeFH patients undergoing regular weekly or Q2W lipoprotein aphere...
journal_title:European heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1093/eurheartj/ehw388
更新日期:2016-12-21 00:00:00
abstract:AIMS:Elevated resting heart rate (RHR) is a known, independent cardiovascular (CV) risk factor, but is not included in risk estimation systems, including Systematic COronary Risk Evaluation (SCORE). We aimed to derive risk estimation systems including RHR as an extra variable and assess the value of this addition. MET...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehq164
更新日期:2010-09-01 00:00:00
abstract:AIMS:This study evaluated the predictive value of NT-proBNP for patients with diabetes mellitus and compared the prognostic aptitude of this neurohumoral marker to traditional markers of cardiovascular events. METHODS AND RESULTS:A prospective observational study was conducted in 631 diabetic patients. The composite e...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehn334
更新日期:2008-09-01 00:00:00