Abstract:
AIMS:Magnetic resonance imaging (MRI) is well established as an important diagnostic tool in medicine. However, the presence of a cardiac pacemaker is usually regarded as a contraindication for MRI due to safety reasons. In this study, heating effects at the myocardium-pacemaker lead tip interface have been investigated in a chronic animal model during MRI at 1.5 Tesla. METHODS AND RESULTS:Pacemaker leads with additional thermocouple wires as temperature sensors were implanted in nine animals. Temperature increases of up to 20 degrees C were measured during MRI of the heart. Significant impedance and minor stimulation threshold changes could be seen. However, pathology and histology could not clearly demonstrate heat-induced damage. CONCLUSIONS:MRI may produce considerable heating at the lead tip. Changes of pacing parameters due to MRI could be seen in chronic experiments. Potential risk of tissue damage cannot be excluded even though no reproducible alterations at the histological level could be found.
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Luechinger R,Zeijlemaker VA,Pedersen EM,Mortensen P,Falk E,Duru F,Candinas R,Boesiger Pdoi
10.1093/eurheartj/ehi009subject
Has Abstractpub_date
2005-02-01 00:00:00pages
376-83; discussion 325-7issue
4eissn
0195-668Xissn
1522-9645pii
ehi009journal_volume
26pub_type
杂志文章abstract::Atrial fibrillation (AF) and chronic heart failure (CHF) are two major and even growing cardiovascular conditions that often coexist. However, few data are available to guide treatment of AF in patients with CHF. This review summarizes current literature concerning the following topics: (i) prognostic relevance of AF ...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehm341
更新日期:2007-11-01 00:00:00
abstract:AIMS:To evaluate outcomes for left main coronary artery (LMCA) stenting and compare results between protected (left coronary grafted) and unprotected LMCA stenting in the current bare-metal stent era. METHODS:We reviewed outcomes among 142 consecutive patients who underwent protected or unprotected LMCA stenting since...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/s0195-668x(03)00314-2
更新日期:2003-09-01 00:00:00
abstract::Despite therapeutic improvements, cardiogenic shock (CS) remains the most common cause of death in patients with acute myocardial infarction (AMI). In addition to percutaneous coronary intervention, inotropes, fluids, adjunctive medication, intra-aortic balloon counterpulsation, and also assist devices are widely used...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehq220
更新日期:2010-08-01 00:00:00
abstract:OBJECTIVES:This study was designed to assess the effects of beta-blockade on cardiopulmonary exercise performance in symptomatic patients with tight mitral stenosis in sinus rhythm. BACKGROUND:The role of beta-blockers in these patients has been controversial and assessment of effort tolerance using treadmill exercise...
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.a061084
更新日期:1995-09-01 00:00:00
abstract:AIMS:Because benefits of cardiac resynchronization therapy (CRT) appear to be less favourable in non-left bundle branch block (LBBB) patients, this prospective longitudinal study tested the hypothesis that QRS morphology and echocardiographic mechanical dyssynchrony were associated with long-term outcome after CRT. ME...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehs013
更新日期:2012-11-01 00:00:00
abstract:AIMS:Little research exists on exercise performance and training in patients with an implemented cardioverter defibrillator (ICD) and only in a limited number of patients. This study aims to investigate the effect of exercise training in ICD patients in comparison to the effects in other cardiac patients without an ICD...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ehj.2004.04.034
更新日期:2004-07-01 00:00:00
abstract:AIMS:Cardiac angiotensin-I converting enzyme (ACE) activity is influenced by the ACE I/D polymorphism. Evidence suggests that the DD-genotype may be a risk factor for cardiac hypertrophy and heart failure, especially in hypertensive subjects. We assessed the relation between the ACE I/D polymorphism and the risk of inc...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.08.026
更新日期:2004-12-01 00:00:00
abstract:AIMS:To compare two different clopidogrel regimens on the outcomes of patients undergoing elective coronary angiography (CAG)+/-ad hoc percutaneous coronary intervention (PCI). METHODS AND RESULTS:Open-trial randomized 1028 patients with stable angina to group A ('non-selective'-clopidogrel 600 mg > 6 h before CAG; n ...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/ehn169
更新日期:2008-06-01 00:00:00
abstract:AIMS:Despite disparities in pathophysiology and disease manifestation between male and female patients with heart failure, studies focusing on sex differences in biomarkers are scarce. The purpose of this study was to assess sex-specific variation in clinical characteristics and biomarker levels to gain more understand...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/eurheartj/eht152
更新日期:2013-08-01 00:00:00
abstract:AIM:To compare patients treated for heart failure in relation to the management in general practices versus hospital admission. METHODS AND RESULTS:Twelve randomly selected general practices (GP) were screened for patients receiving ACE-inhibitor, digoxin, or loop diuretic treatment. The first 500 volunteers of 959 po...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ehj.2004.06.033
更新日期:2004-10-01 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:AIMS:The SHould we emergently revascularize Occluded Coronaries in cardiogenic shocK (SHOCK) Trial showed no benefit of early revascularization in patients aged >/=75 years with acute myocardial infarction and cardiogenic shock. We examined the effect of age on treatment and outcomes of patients with cardiogenic shock ...
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:10.1016/s0195-668x(02)00844-8
更新日期:2003-05-01 00:00:00
abstract::To investigate the antianginal efficacy and tolerability of felodipine, a new dihydropyridine calcium antagonist, 20 patients with stable exertional angina, not completely controlled by beta-blocker monotherapy, entered a randomized, double-blind, placebo-controlled, crossover study. Patients on standard beta-blocker ...
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.a059628
更新日期:1990-11-01 00:00:00
abstract::A 35-year-old man developed giant cell myocarditis resulting in severe congestive cardiac failure. He needed urgent orthotopic cardiac transplantation despite maximal doses of inotropes and augmentation with an intra-aortic balloon pump. The patient presented with rhythm disturbances and echocardiographically diminish...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a059938
更新日期:1991-04-01 00:00:00
abstract:AIM:Estrogens regulate several biological processes involved in the pathogenesis of myocardial infarction. Catechol-O-methyltransferase (COMT) is a key enzyme in the degradation of estrogens. There is a functional polymorphism in the COMT gene (Val158Met), affecting the activity of the enzyme. We investigated if the lo...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ehj.2003.12.026
更新日期:2004-03-01 00:00:00
abstract:AIM:Cross-sectional studies reported associations between short leucocyte telomere length (LTL) and measures of vascular and cardiac damage. However, the contribution of LTL dynamics to the age-related process of cardiovascular (CV) remodelling remains unknown. In this study, we explored whether the rate of LTL shorten...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehu226
更新日期:2014-12-07 00:00:00
abstract::Atrial natriuretic peptide (ANP) is a member of the natriuretic peptide family that exerts various biological effects via acting on the receptor-guanylyl cyclase system, increasing the content of intracellular cyclic guanosine monophosphate (cGMP). ANP was first identified as a diuretic/natriuretic and vasodilating ho...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehn206
更新日期:2008-06-01 00:00:00
abstract::The efficacies and safety of nicorandil, 20 mg b.d., and diltiazem, 60 mg t.d., in the treatment of stable angina pectoris were compared in a double-blind randomized parallel group study involving 123 patients. The duration of the study was 3 months. Exercise tolerance tests were performed by the patients when on plac...
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.suppl_b.30
更新日期:1993-07-01 00:00:00
abstract::Factors that exacerbate the risk of atherosclerotic plaque formation include cigarette smoking, hypertension, hypercholesterolaemia, sedentary lifestyle, and oestrogen deficiency. The potentially important role of oestrogen deficiency in this process is evidenced by the significant increase in cardiovascular risk obse...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/17.suppl_d.32
更新日期:1996-08-01 00:00:00
abstract::The alterations of the beta-adrenoceptor adenylyl cyclase are reviewed. In failing myocardium, the down-regulation of beta 1-adrenoceptors is accompanied by a decrease in steady state mRNA levels, as studied with quantitative polymerase chain reactions in dilated and ischaemic cardiomyopathy. The density of beta 2-adr...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/15.suppl_d.30
更新日期:1994-12-01 00:00:00
abstract::Food constituents can either promote cardiovascular health or serve in its demise. In view of the lack of more effective pharmacological interventions in cardiovascular disease (CVDs), attention has focused on the potential protective effects of diet. Food components and their metabolites are emerging as major regulat...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/ehy597
更新日期:2019-02-14 00:00:00
abstract::Sixty patients (31 male, 29 female) were studied in a 4-week double-blind parallel dose-response study. Patients received amlodipine 1.25 mg (n = 12), 2.5 mg (n = 12), 5 mg (n = 12), 10 mg (n = 12) or placebo (n = 12) once a day. Anti-anginal efficacy was assessed by sequential treadmill testing 24 h post-dose, freque...
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.a059864
更新日期:1991-02-01 00:00:00
abstract::Forty patients with prosthetic valve endocarditis (PVE) presenting during a 12-year period at a single hospital were studied. Twenty-six were male and 14 female and ages ranged from 19 to 67 years. During the first six post-operative months, most episodes were caused by staphylococci (38%) and Gram negative bacilli (2...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/5.suppl_c.133
更新日期:1984-10-01 00:00:00
abstract::Peptides produced by the renin-angiotensin system play a major role in the development and progression of various cardiovascular diseases. One of these peptides, angiotensin II, is a potent vasoconstrictor that exerts most of its effects through the human AT1 receptor. Following the discovery of a functional variation...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:
更新日期:1998-07-01 00:00:00
abstract::The class III antiarrhythmic drug dofetilide is known to prolong action potential duration by specific blockade of the delayed rectifier potassium channel Ik. As dofetilide is likely to be used in the treatment of atrial arrhythmias it is important to determine the relative sensitivity of the atrium and ventricle in m...
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.a060790
更新日期:1995-11-01 00:00:00
abstract:AIM:To determine the frequency of pre-existing valvular disease (VD) among patients with acute coronary syndromes (ACS) and to compare the clinical characteristics, clinical course, treatment, and outcomes of ACS patients with and without pre-existing VD. METHODS AND RESULTS:The Euro Heart Survey ACS prospectively enr...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/s0195-668x(02)00742-x
更新日期:2003-04-01 00:00:00
abstract:AIMS:White matter hyperintensities (WMH) progress with age and hypertension, but the key period of exposure to elevated blood pressure (BP), and the relative role of systolic BP (SBP) vs. diastolic BP (DBP), remains unclear. This study aims to determine the relationship between WMH and concurrent vs. past BP. METHODS ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehaa756
更新日期:2020-11-26 00:00:00
abstract:AIMS:To analyse the relationship between initial exercise parameters and peak oxygen consumption and prognosis in 96 patients with congestive heart failure. METHODS AND RESULTS:Comparison of responses during the initial 6 min of cardiopulmonary exercise testing (Naughton modified protocol) in patients stratified to th...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a015201
更新日期:1997-12-01 00:00:00
abstract:Aims:To analyse reasons, timing and predictors of hospital readmissions after transcatheter aortic valve implantation (TAVI). Methods and results:Patients included in the Bern TAVI Registry between August 2007 and June 2014 were analysed. Fine and Gray competing risk regression was used to identify factors predictive ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehx182
更新日期:2017-07-21 00:00:00
abstract:AIMS:Cardiac dyssynchrony is common in patients with heart failure, whether or not they have ischaemic heart disease (IHD). The effect of the underlying cause of cardiac dysfunction on the response to cardiac resynchronization therapy (CRT) is unknown. This issue was addressed using data from the CARE-HF trial. METHOD...
journal_title:European heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1093/eurheartj/ehn577
更新日期:2009-04-01 00:00:00