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 man. Twelve male patients underwent monophasic action potential and refractory period recordings from the high right atrium and right ventricular septum. The patients received either 8 micrograms.kg-1 dofetilide or placebo intravenously. The mean QTc was prolonged by 11% (SD 5%, P < 0.00001) in the active group; the mean monophasic action potential increased by 31% (SD 15%, P < 0.0005) in the atrium and 27% (SD 9%, P < 0.00005) in the ventricle; the mean effective refractory period increased by 30% (SD 16%, P < 0.0005) in the atrium and 20% (SD 6%, P < 0.0001) in the ventricle. No significant change occurred in the placebo group. There was no significant difference in effect between the two chambers. The change in QTc did not accurately reflect acute changes in refractory period or monophasic action potential duration. This has important implications for the use of QT prolongation to assess the acute effect of class III drugs.
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Sedgwick ML,Dalrymple I,Rae AP,Cobbe SMdoi
10.1093/oxfordjournals.eurheartj.a060790subject
Has Abstractpub_date
1995-11-01 00:00:00pages
1641-6issue
11eissn
0195-668Xissn
1522-9645journal_volume
16pub_type
临床试验,杂志文章,随机对照试验abstract:AIMS:To evaluate the effect of thrombolysis on mortality and its causes in older patients with acute myocardial infarction (AMI). METHODS AND RESULTS:An analysis of 706 consecutive patients > or =75 years old with a first AMI enrolled in the PPRIMM75 registry showed that although there were important differences in ba...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehi284
更新日期:2005-09-01 00:00:00
abstract::Falipamil hydrochloride (AQA 39) is a new antiarrhythmic agent structurally related to verapamil. We evaluated the electrophysiologic properties of intravenous falipamil (1.5 mg kg-1 within 20 minutes) in 12 patients. The spontaneous cycle length was significantly (P less than 0.001) prolonged (+79 +/- 59 ms). Atriove...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a062198
更新日期:1987-11-01 00:00:00
abstract:AIMS:We sought to define the mechanisms and correlates of leptin's vascular actions in humans with coronary artery disease. METHODS AND RESULTS:In 131 patients (age 65.7+/-0.7 years mean+/-SEM), ex vivo vascular reactivity to leptin (10(-13)-10(-7) M) was assessed in saphenous vein (SV) rings. Leptin led to SV relaxat...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehi831
更新日期:2006-10-01 00:00:00
abstract::During urgent cardiac catheterization total occlusion of a severe left main coronary artery stenosis occurred, leading to profound cardiogenic shock. The patient survived, after prompt left main coronary angioplasty was performed, followed by emergency coronary bypass surgery. ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a059437
更新日期:1989-12-01 00:00:00
abstract:AIMS:Subjects with lipoprotein(a) [Lp(a)] elevation have increased arterial wall inflammation and cardiovascular risk. In patients at increased cardiovascular risk, arterial wall inflammation is reduced following lipid-lowering therapy by statin treatment or lipoprotein apheresis. However, it is unknown whether lipid-l...
journal_title:European heart journal
pub_type: 杂志文章,随机对照试验
doi:10.1093/eurheartj/ehy862
更新日期:2019-09-01 00:00:00
abstract:AIMS:Left ventricular (LV) ejection fraction (LVEF) is currently considered for the decision making of patients with mitral regurgitation (MR). However, LVEF represents change in LV volume between end-diastole and end-systole but does not characterize the intrinsic function of the myocardium. In contrast, speckle-track...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehv680
更新日期:2016-03-07 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1016/j.ehj.2004.02.011
更新日期:2004-05-01 00:00:00
abstract:AIMS:The aim of this study was to evaluate the effect of valve surgery (VS) in infective endocarditis (IE) on 5-year mortality and to evaluate whether conflicting results reported by previous studies could be due to differences in their methodological approaches. METHODS AND RESULTS:Four hundred and forty-nine patient...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehp008
更新日期:2011-08-01 00:00:00
abstract::Approximately 20% of patients undergoing diagnostic coronary arteriography for acute or chronic cardiac ischaemia have angiographically normal coronary arteries. The mechanism behind this phenomenon is likely to be the result of a combination of functional or anatomical abnormalities in the coronary microcirculation, ...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/17.suppl_g.14
更新日期:1996-12-01 00:00:00
abstract:AIMS:Monocytes are critical mediators of healing following acute myocardial infarction (AMI), making them an interesting target to improve myocardial repair. The purpose of this study was a gain of insight into the source and recruitment of monocytes following AMI in humans. METHODS AND RESULTS:Post-mortem tissue spec...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/eht331
更新日期:2014-02-01 00:00:00
abstract::A look back on the history of the European Society of Cardiology which officially came into existence in 1950. ...
journal_title:European heart journal
pub_type: 历史文章,杂志文章
doi:10.1093/eurheartj/ehv248
更新日期:2015-07-21 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehs011
更新日期:2013-06-01 00:00:00
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journal_title:European heart journal
pub_type: 临床试验,杂志文章
doi:10.1053/euhj.1999.1991
更新日期:2000-07-01 00:00:00
abstract:AIMS:Long-term randomized comparisons of percutaneous coronary intervention (PCI) to coronary artery bypass grafting (CABG) in left main coronary (LM) disease and/or three-vessel disease (3VD) patients have been limited. This analysis compares 3-year outcomes in LM and/or 3VD patients treated with CABG or PCI with TAXU...
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/ehr213
更新日期:2011-09-01 00:00:00
abstract:AIM:To investigate fatalities from myocardial infarction at 28 days and one-year among patients aged 35-64 years in the Nordic and Lithuanian centres participating in the World Health Organization MONICA (Monitoring of Trends and Determinants of Cardiovascular Disease) Project. METHODS AND RESULTS:Altogether 9100 myoc...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a015124
更新日期:1997-01-01 00:00:00
abstract::For clinical prognosis, LV function is best described in terms of ejection fraction (EF) or end-systolic volume (ESV). Because deterioration of LV function is the most important adverse prognostic factor for patients after recovery from myocardial infarction, any agent which improves function should improve long-term ...
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/11.suppl_f.5
更新日期:1990-08-01 00:00:00
abstract:AIMS:To compare effects of heparin and hirudin on biochemical markers of coagulation. METHODS AND RESULTS:Patients (n=395) with unstable angina or myocardial infarction without ST elevation were randomized to a 72-h infusion of one of three regimens: unfractionated heparin (bolus of 5000 IU followed by an infusion of ...
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:10.1053/euhj.1999.2005
更新日期:2000-09-01 00:00:00
abstract::The effect of propranolol administration on regional coronary haemodynamics were investigated in 14 patients with stable exertional angina and isolated left anterior descending artery disease. Thermodilution was used to measure great cardiac vein flow (GCVF) and anterior regional coronary resistance (ARCR) under contr...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a059640
更新日期:1990-11-01 00:00:00
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journal_title:European heart journal
pub_type: 临床试验,杂志文章
doi:10.1053/euhj.1997.0614
更新日期:1998-02-01 00:00:00
abstract:AIMS:The study set out to assess the relative contributions of donor heart rate, respiration and recipient atrial contraction on the mean of pulsed wave transmitral Doppler flow indices in orthotopic heart transplant recipients. This would provide information on the theoretical usefulness of pacemaker synchronization o...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a015149
更新日期:1997-10-01 00:00:00
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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.a015170
更新日期:1997-11-01 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehv343
更新日期:2015-10-21 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/oxfordjournals.eurheartj.a015046
更新日期:1996-08-01 00:00:00
abstract:AIMS:In patients with sick sinus syndrome, bradycardia can be treated with a single-lead pacemaker or a dual-chamber pacemaker. Previous trials have revealed that pacing modes preserving atrio-ventricular synchrony are superior to single-lead ventricular pacing, but it remains unclear if there is any difference between...
journal_title:European heart journal
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2011-03-01 00:00:00
abstract::Stephan Achenbach reviews the history of coronary computer tomography angiography and discusses its further evolution. ...
journal_title:European heart journal
pub_type: 杂志文章
doi:
更新日期:2016-02-21 00:00:00
abstract:BACKGROUND:The pathophysiology of myocardial infarction (MI) may differ depending on whether it occurs early or late in life. We tested the hypothesis that risk factor pattern differs according to the age at MI. METHODS:We performed a matched case-control study in the population-based Malmö Preventive Project (n = 33 ...
journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehw026
更新日期:2016-07-01 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
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1053/euhj.1999.1864
更新日期:2000-03-01 00:00:00
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journal_title:European heart journal
pub_type: 杂志文章
doi:10.1093/eurheartj/ehaa1050
更新日期:2021-01-04 00:00:00
abstract::This treatise reviews two-dimensional echocardiographic criteria which have been developed to describe and distinguish reversible vs irreversible myocardial ischaemia. It also discusses the new pathophysiologic concepts such as 'hibernating' and 'decapitated' myocardium, and also 'reperfusion injury' and 'stunned' myo...
journal_title:European heart journal
pub_type: 杂志文章,评审
doi:10.1093/eurheartj/9.suppl_f.29
更新日期:1988-04-01 00:00:00