• atrial fibrillation

    Prominent publications by John Camm MD John Camm

    KOL Index score: 21729

    BACKGROUND: Four new oral anticoagulants compare favourably with warfarin for stroke prevention in patients with atrial fibrillation; however, the balance between efficacy and safety in subgroups needs better definition. We aimed to assess the relative benefit of new oral anticoagulants in key subgroups, and the effects on important secondary outcomes.

    METHODS: We searched Medline from Jan 1, 2009, to Nov 19, 2013, limiting searches to phase 3, randomised trials of patients with atrial ...

    Also Ranks for: New Oral Anticoagulants |  atrial fibrillation |  randomised trials |  systemic embolic events |  intracranial haemorrhage
    KOL Index score: 19901

    OBJECTIVE: To attempt to determine the relative value of preclinical cardiac electrophysiology data (in vitro and in vivo) for predicting risk of torsade de pointes (TdP) in clinical use.

    METHODS: Published data on hERG (or I(Kr)) activity, cardiac action potential duration (at 90% repolarisation; APD(90)), and QT prolongation in dogs were compared against QT effects and reports of TdP in humans for 100 drugs. These data were set against the free plasma concentrations attained during ...

    Also Ranks for: Drugs Tdp |  clinical qt |  herg ikr |  humans data |  safety margin
    KOL Index score: 17231

    OBJECTIVES: We investigated whether heart rate variability, the signal-averaged electrocardiogram (ECG), ventricular arrhythmias and left ventricular ejection fraction predict the mechanism of cardiac death after myocardial infarction.

    BACKGROUND: Postinfarction risk stratification studies have almost exclusively focused on predicting the risk of arrhythmic death. The factors that identify and distinguish persons at risk for arrhythmic and nonarrhythmic death are poorly known.

    METHODS: ...

    Also Ranks for: Arrhythmic Death |  ventricular arrhythmias |  rate variability |  ejection fraction |  acute myocardial
    KOL Index score: 16844

    The optimal atrioventricular delay at rest and during exercise was investigated in nine patients with heart block and implanted dual chamber pacemakers. All patients studied had normal left ventricular function and a normal sinus node rate response to exercise. Cardiac output was measured by continuous wave Doppler and was calculated as the product of stroke distance measured by Doppler at the left ventricular outflow, aortic root area measured by M mode echocardiography, and heart rate. ...

    Also Ranks for: Atrioventricular Delay |  dual chamber pacemakers |  cardiac output |  rest exercise |  artificial echocardiography
    KOL Index score: 16443

    To evaluate the potential prognostic value of the circadian variation of QT intervals in predicting sudden cardiac death (SCD) in patients after myocardial infarction (MI), 15 pairs of post-MI patients (15 died suddenly within 1 year after MI [SCD victims] and 15 remained event-free [MI survivors]) were studied (mean age 60 +/- 8 years; 24 men and 6 women). The pairs were matched for age, gender, infarct site, presence of Q wave, left ventricular ejection fraction, thrombolytic and ...

    Also Ranks for: Qt Interval |  circadian variation |  myocardial infarction |  scd victims |  normal subjects
    KOL Index score: 16212

    Atrial fibrillation (AF) is associated with a fivefold increase in the risk of stroke. The Phase III ROCKET AF (Rivaroxaban Once-Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation) trial showed that rivaroxaban, an oral, direct Factor Xa inhibitor, was noninferior to warfarin for the reduction of stroke or systemic embolism in patients with AF. Compared with warfarin, rivaroxaban significantly ...

    Also Ranks for: Atrial Fibrillation |  latin america |  prevention stroke |  patients xantus |  routine clinical practice
    KOL Index score: 15945

    OBJECTIVES: This substudy tested a prospective hypothesis that European Myocardial Infarct Amiodarone Trial (EMIAT) patients with depressed heart rate variability (HRV) benefit from amiodarone treatment.

    BACKGROUND: The EMIAT randomized 1,486 survivors of acute myocardial infarction (MI) aged < or =75 years with left ventricular ejection fraction (LVEF) < or =40% to amiodarone or placebo. Despite a reduction of arrhythmic mortality on amiodarone, all-cause mortality was not ...

    Also Ranks for: Heart Rate |  patients hrv |  prophylactic treatment |  placebo amiodarone |  allcause mortality
    KOL Index score: 15849

    The current manuscript is the second update of the original Practical Guide, published in 2013 [Heidbuchel et al. European Heart Rhythm Association Practical Guide on the use of new oral anticoagulants in patients with non-valvular atrial fibrillation. Europace 2013;15:625-651; Heidbuchel et al. Updated European Heart Rhythm Association Practical Guide on the use of non-vitamin K antagonist anticoagulants in patients with non-valvular atrial fibrillation. Europace 2015;17:1467-1507]. ...

    Also Ranks for: Patients Noacs |  atrial fibrillation |  practical guide |  heart rhythm |  oral anticoagulants
    KOL Index score: 15654

    BACKGROUND: GLORIA-AF (Global Registry on Long-Term Oral Antithrombotic Treatment in Patients with Atrial Fibrillation) is a prospective, global registry program describing antithrombotic treatment patterns in patients with newly diagnosed nonvalvular atrial fibrillation at risk of stroke. Phase 2 began when dabigatran, the first non-vitamin K antagonist oral anticoagulant (NOAC), became available.

    OBJECTIVES: This study sought to describe phase 2 baseline data and compare these with the ...

    Also Ranks for: Atrial Fibrillation Patients |  antithrombotic treatment |  north america |  stroke prevention |  changing landscape
    KOL Index score: 15645

    BACKGROUND: Atrial fibrillation occurs frequently in patients with congestive heart failure and commonly results in clinical deterioration and hospitalization. Sinus rhythm may be maintained with antiarrhythmic drugs, but some of these drugs increase the risk of death.

    METHODS: We studied 1518 patients with symptomatic congestive heart failure and severe left ventricular dysfunction at 34 Danish hospitals. We randomly assigned 762 patients to receive dofetilide, a novel class III ...

    Also Ranks for: Congestive Heart Failure |  dofetilide atrial fibrillation |  sinus rhythm |  hazard ratio |  risk death
    KOL Index score: 15578

    BACKGROUND: Although heart rate variability has already been studied in survivors of sudden cardiac death secondary to coronary artery disease, an assessment of heart rate variability in survivors of sudden cardiac death not associated with coronary artery disease has not been made.

    METHODS: 10 patients with aborted sudden cardiac death not associated with coronary artery disease (seven patients with primary ventricular fibrillation and three with unclassified mild cardiomyopathy) ...

    Also Ranks for: Heart Rate |  sudden cardiac death |  coronary artery disease |  cardiac electrocardiography |  24 hours
    KOL Index score: 15520

    Resting heart rate is associated with cardiovascular and all-cause mortality, and the mortality benefit of some cardiovascular drugs seems to be related in part to their heart rate-lowering effects. Since it is difficult to separate the benefit of heart rate lowering from other actions with currently available drugs, a ‘pure’ heart rate-lowering drug would be of great interest in establishing the benefit of heart rate reduction per se.Heart rate is determined by spontaneous electrical ...

    Also Ranks for: Heart Rate |  current inhibition |  patients stable angina |  ivabradine myocardial |  diastolic depolarisation
    KOL Index score: 15250

    OBJECTIVES: To provide an accurate, web-based tool for stratifying patients with atrial fibrillation to facilitate decisions on the potential benefits/risks of anticoagulation, based on mortality, stroke and bleeding risks.

    DESIGN: The new tool was developed, using stepwise regression, for all and then applied to lower risk patients. C-statistics were compared with CHA2DS2-VASc using 30-fold cross-validation to control for overfitting. External validation was undertaken in an independent ...

    Also Ranks for: Atrial Fibrillation |  mortality stroke |  bleeding risk |  patients anticoagulation |  cha2ds2 vasc
    KOL Index score: 15250

    BACKGROUND: It is common practice to restore and maintain sinus rhythm in patients with atrial fibrillation and heart failure. This approach is based in part on data indicating that atrial fibrillation is a predictor of death in patients with heart failure and suggesting that the suppression of atrial fibrillation may favorably affect the outcome. However, the benefits and risks of this approach have not been adequately studied.

    METHODS: We conducted a multicenter, randomized trial ...

    Also Ranks for: Rhythm Control |  atrial fibrillation |  heart failure |  death patients |  ventricular rate


    John Camm MD John Camm: Influence Statistics

    Sample of concepts for which John Camm MD John Camm is among the top experts in the world.
    Concept World rank
    baseline testing verapamil #1
    rhythmcontrol cardiovascular #1
    sinus rhythm pdi #1
    110235 #1
    pacemaker arm movements #1
    autonomic trigger patterns #1
    hrv lvef #1
    atrial fibrillation recordaf #1
    induced vpb apb #1
    pacing artificial #1
    patients rate modulated #1
    normalised qt #1
    postinfarction patients risk #1
    bazetts formula #1
    trial emiat #1
    placebo 0·0 lesions #1
    low energy ablation #1
    singlechamber #1
    year lvef 40 #1
    treatment outcome afl #1
    long‐term electrocardiograms #1
    specificity 75 #1
    thrombolysis vpc frequency #1
    consistency mnn #1
    oac noacs #1
    gp pvigp groups #1
    stroke atrial flutter #1
    meal qtc #1
    cardiac cardiomyopathies death #1
    qtp tpte dispersion #1
    sdrr values placebo #1
    circadian pattern qtc #1
    nhvt #1
    comme ça #1
    electrocardiography ambulatory #1
    congenital chb #1
    qrs 130 #1
    ranolazine dose #1
    predicting arrhythmic #1
    afb 225 bid #1
    sinus rhythm atrioverter #1
    laao doac #1
    qrsv interval #1
    tachycardia adenosine #1
    risks arrhythmic death #1
    qt beta alpha #1
    data herg #1
    hrv 24 hours #1
    pdi sinus rhythm #1
    regression qt #1

    Key People For Atrial Fibrillation

    Top KOLs in the world
    Gregory Yoke Hong Lip
    atrial fibrillation heart failure stroke prevention
    John Camm MD John Camm
    atrial fibrillation myocardial infarction heart rate
    Emelia J Benjamin
    atrial fibrillation framingham heart study heart failure
    Harry J G M C Crijns
    atrial fibrillation heart failure sinus rhythm
    Isabelle C Van Gelder
    atrial fibrillation heart failure rate control
    Stefan Hans Hohnloser
    atrial fibrillation myocardial infarction sinus rhythm

    John Camm MD John Camm:Expert Impact

    Concepts for whichJohn Camm MD John Cammhas direct influence:Atrial fibrillation,  Myocardial infarction,  Heart rate,  Ventricular tachycardia,  Qt interval,  Heart rate variability,  Sinus rhythm,  Heart failure.

    John Camm MD John Camm:KOL impact

    Concepts related to the work of other authors for whichfor which John Camm MD John Camm has influence:Atrial fibrillation,  Heart failure,  Catheter ablation,  Myocardial infarction,  Blood pressure,  Sudden cardiac death,  Oral anticoagulants.



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    St George’s University, London, UK | Cardiology, St George's University of London, London, UK | Cardiology Clinical Academic Group, Molecular and Clinical Sciences Institute, St. Georges University of London, London, United Kingdom. | St. George's Un