Abstract:
INTRODUCTION:Studies evaluating changes in HRV preceding the onset of ventricular arrhythmias using conventional techniques have shown inconsistent results. Time-frequency analysis of HRV is traditionally performed using short-term Fourier transform (STFT). Wavelet transform (WT) may however be better suited for analyzing non-stationary signals such as heart rate recordings. METHODS AND RESULTS:We studied patients with a history of myocardial infarction implanted with a defibrillator with an extended memory. The RR intervals during the 51 min preceding ventricular events requiring electrical therapy were retrieved, and HRV studied by WT and STFT. 111 episodes of ventricular arrhythmia were retrieved from 41 patients (38 males, age 64 +/- 8 years). Heart rate increased significantly before arrhythmia. There was no significant variation in low frequency / high frequency components (LF/HF) observed for the group as a whole, probably due to a great degree of heterogeneity amongst individuals. A subset of 30 patients also had heart rate recordings performed during normal ICD follow-up. WT did not show any difference in HRV before arrhythmia onset and during control conditions. CONCLUSION:Variations in HRV before onset of ventricular arrhythmias were not apparent in this large dataset, despite use of optimal tools for studying time-frequency analysis.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Burri H,Chevalier P,Arzi M,Rubel P,Kirkorian G,Touboul Pdoi
10.1016/j.ijcard.2005.06.001subject
Has Abstractpub_date
2006-04-28 00:00:00pages
101-7issue
1eissn
0167-5273issn
1874-1754pii
S0167-5273(05)00810-7journal_volume
109pub_type
杂志文章,多中心研究abstract:BACKGROUND:Apoptosis plays a major role in the transition to heart failure (HF) in systemic hypertension although the underlying mechanisms are still unclear. The aim of this study was to determine the relationship between apoptosis, left ventricular remodeling, heart failure and the myocyte expression of survivin, an ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2005.07.061
更新日期:2006-08-28 00:00:00
abstract:INTRODUCTION:We aim to characterize the nature and magnitude of the prospective association between education and incident heart failure (HF) in the Atherosclerosis Risk in Communities (ARIC) Study and investigate any causal relevance to the association between them. METHODS:The final sample size was 12,315 in this st...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.09.068
更新日期:2021-02-01 00:00:00
abstract:BACKGROUND:Cardiovascular diseases (CVD) are the first cause of death and disability in western countries. Despite therapeutic advances, their prevalence is constantly increasing. Detailed assessment of modifiable CV risk factors could improve CVD prevention and management. METHODS:to assess CV risk and hypertension c...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2017.03.151
更新日期:2017-09-15 00:00:00
abstract:BACKGROUND:Hypertension is a major cause of cardiovascular disease. Periodic nationwide surveys are essential for monitoring secular trend of hypertension and its control in population. We assessed prevalence of hypertension and related awareness, treatment and control rates in Chinese adults in 2013-14. METHODS:A nat...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.10.110
更新日期:2017-01-15 00:00:00
abstract::The intensity of indium-111 antimyosin monoclonal antibody uptake for visualization of myocardial infarction seems partially dependent on the state of the infarct related coronary artery. The aim of this study is to determine the factors which could account for the monoclonal antibody uptake variability. For this purp...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(93)90009-6
更新日期:1993-07-15 00:00:00
abstract::We present the first described use of the Venture (St. Jude Medical Inc.) catheter to accomplish balloon crush stenting of a severely angulated bifurcation via the radial approach. We outline the lessons learned and pitfalls of performing percutaneous intervention to severely angulated bifurcations such as this one. ...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.04.016
更新日期:2007-08-09 00:00:00
abstract:BACKGROUND:Mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like (MELAS) syndrome is a rare condition with heterogeneous clinical presentation. Cardiac involvement commonly develops during adulthood, comprising both structural and conduction/arrhythmic abnormalities; early paediatric onset has rarely ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.10.051
更新日期:2019-02-01 00:00:00
abstract::Mutations in genes encoding cytoskeletal proteins participate in the pathogenesis of familial dilated cardiomyopathy (fDCM). Additional factors including inflammatory reactions are believed to play a role in deterioration of left-ventricular function. An association of inflammatory fDCM with the HSPA1B 1267 A-->G poly...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.08.121
更新日期:2009-03-20 00:00:00
abstract:BACKGROUND:Quantitative flow ratio (QFR) is a novel, adenosine-free method for functional coronary lesion interrogation, which is based on 3-dimensional quantitative coronary angiography and computational algorithms. Data on QFR in all-comer patients with intermediate coronary lesions are scarce, and the diagnostic per...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.11.093
更新日期:2019-03-15 00:00:00
abstract:BACKGROUND:Early recurrence of atrial fibrillation (AF) is common following a successful electrical cardioversion (ECV). The purpose of this study was to investigate the hypothesis that AF recurrence is related to atrial electrical inhomogeneity, which may influence the P wave characteristics. METHODS:Two hundred nine...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2018.07.135
更新日期:2018-12-01 00:00:00
abstract::Mongrel dogs of either sex with ligation of their left anterior descending coronary artery were employed for the present study to investigate the biochemical basis of the cardioprotective action of dilazep. Dilazep (0.2 mg/kg intravenous) was administered 20 minutes after coronary arterial occlusion. Ligation of the a...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/0167-5273(89)90244-1
更新日期:1989-05-01 00:00:00
abstract:OBJECTIVES:Describe quality outcomes of adults with congenital heart disease (ACHD) undergoing cardiovascular procedures and admissions in a free-standing children's hospital with a multi-disciplinary ACHD program and compared with pediatric outcomes. BACKGROUND:A challenge for the U.S. healthcare system is where to t...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2009.07.007
更新日期:2011-02-03 00:00:00
abstract:BACKGROUND:Multiple studies have sought to determine variables associated with improved "response" to cardiac resynchronization therapy(CRT). Such variables, however, are often derived from inadequately controlled, single center cohort studies calling external validity into question. We sought to determine predictors o...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2016.09.078
更新日期:2016-12-15 00:00:00
abstract:AIMS:Initial thrombolysis in myocardial infarction (TIMI) flow and mortality are related in ST-elevation myocardial infarction (STEMI) patients treated with primary angioplasty (PPCI). It is unclear whether early adjunctive treatment with unfractionated heparin (UFH) is beneficial for coronary patency. We investigated ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.06.009
更新日期:2015-11-01 00:00:00
abstract:BACKGROUND:Ischaemic heart disease (IHD) is the leading cause of death worldwide. The World Health Organisation (WHO) collects mortality data coded using the International Statistical Classification of Diseases (ICD) code. METHODS:We analysed IHD deaths world-wide between 1995 and 2009 and used the UN population datab...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2012.10.046
更新日期:2013-09-30 00:00:00
abstract::We report the longest duration of implantation of a porcine bioprosthesis in the English language literature--a Carpentier-Edwards valved conduit excised after twenty-five years. This 50-year-old man had undergone a modified Fontan operation for tricuspid atresia. He presented with progressive dyspnea, fatigue and ede...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2006.07.063
更新日期:2007-04-12 00:00:00
abstract:BACKGROUND:Coarctation of the Aorta (CoA) is associated with increased aortic stiffness and diastolic left ventricular dysfunction. The mechanisms involved and impact of age remain unclear. It was the aim of this study to characterize arterial and cardiac function, their correlation, and the effect of age in children a...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.08.095
更新日期:2021-01-15 00:00:00
abstract:BACKGROUND:In patients undergoing atrial fibrillation (AF) ablation, despite uninterrupted oral anticoagulants (OACs) have been recommended, no consensus has emerged regarding to whether uninterrupted novel oral anticoagulants (NOACs) are superior to uninterrupted vitamin K antagonists (VKAs) for the periprocedural ant...
journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ijcard.2018.06.024
更新日期:2018-11-01 00:00:00
abstract:BACKGROUND:Previous studies suggested that platelet-activating factor (PAF) plays an important role in ischemic diseases. Apoptosis has been implicated in myocardial infarction-related cell death. The present study was designed to determine whether PAF could induce apoptosis in cardiac myocytes and the underlying mecha...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2009.01.068
更新日期:2010-08-06 00:00:00
abstract::A 61-year-old man was referred at our hospital for a cardiac evaluation after an episode of oppressive chest pain at rest. He was discharged with a MRI diagnosis of non-compaction cardiomyopathy presented with typical angina, left ventricle dysfunction and ischemic EKG findings without atherosclerotic narrowing and al...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2008.11.097
更新日期:2010-04-30 00:00:00
abstract:BACKGROUND:Tissue factor pathway inhibitor-1 (TFPI-1) has multiple functions and its precise role and molecular mechanism during the development of atherosclerosis are not clear. OBJECTIVES:To determine the effect and molecular mechanism of TFPI-1 deficiency in vascular smooth muscle cells (VSMCs) in atherosclerosis i...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.11.195
更新日期:2017-02-01 00:00:00
abstract::Cytokines are a large and rapidly expanding group of polypeptides produced by many different cell types. Increasing interest has been focused on the role of cytokines as mediators of metabolic, immunological and endocrine responses to surgery. The cytokine response in patients undergoing cardiac surgery during cardiop...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/0167-5273(96)02568-5
更新日期:1996-04-26 00:00:00
abstract::Acute myocardial infarction (AMI) is infrequent in patients with idiopathic thrombocytopenic purpura (ITP) so the best treatment is not well known. The next case shows a 37-year-old man with chronic ITP who suffered an anterior AMI, the platelet count at admission was 39,000 microL. He was treated successfully with pr...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2007.05.075
更新日期:2008-07-21 00:00:00
abstract:OBJECTIVES:To examine the association between health-related quality of life (HRQoL) and mortality in patients with heart failure (HF). BACKGROUND:The potential association of HRQoL and mortality in patients with HF is unclear. We investigated this association in The Danish Study to Assess the Efficacy of Implantable ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.02.008
更新日期:2020-04-15 00:00:00
abstract:BACKGROUND:The clinical outcomes for women compared with men undergoing left main PCI were sparse. We compared the characteristics and long-term outcomes in women versus men after percutaneous coronary intervention (PCI) with drug-eluting stents (DES) for unprotected left main CAD. METHODS:We identified 2328 patients ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2017.06.051
更新日期:2018-02-15 00:00:00
abstract::Mitral valve (MV) is composed of several structures working in synchrony to open during diastole and close in systole within the high-pressure systemic environment. Its morphological features ensure a normal leaflet closure that prevents regurgitation of blood back into the left atrium causing loss of ventricular pres...
journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2011.11.023
更新日期:2013-03-10 00:00:00
abstract::Migration of retained fractured pacemaker electrodes to the pulmonary artery is a rare but recognised complication. It is imperative that if this occurs the electrode is removed from this position due to the increased risk of associated infection and thrombus formation. Historically open surgery has been required to m...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2009.05.046
更新日期:2011-06-16 00:00:00
abstract:PURPOSE:Pre and post-operative administration of sevoflurane in myocardial revascularization surgery provides enhanced cardioprotective effects exerted by pharmacologic pre- and post-conditioning, as compared to propofol. The identification of the enzymes involved in conditioning mechanisms is crucial to the understand...
journal_title:International journal of cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ijcard.2017.04.105
更新日期:2017-09-15 00:00:00
abstract:BACKGROUND:There is growing evidence that transradial (TRI) as compared to transfemoral (TFI) percutaneous coronary intervention (PCI) is associated with improved clinical outcome driven by less hemorrhagic complications, in particular in STEMI patients receiving aggressive antithrombotic treatment. Feasibility rate of...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2012.10.024
更新日期:2013-09-30 00:00:00
abstract:INTRODUCTION:Patient-reported outcomes are routinely assessed in atrial fibrillation (AF) to evaluate efficacy of treatment and as clinical trial outcomes. The relation of depression to such measures has had limited study in AF. METHODS:In a cohort receiving treatment for AF, we assessed depression with the Patient He...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2019.12.004
更新日期:2020-03-01 00:00:00