S. Bertil Olsson

Atrial fibrillatory rate and risk of stroke in atrial fibrillation (2009)

Bollmann, Andreas, Husser, Daniela, Lindgren, Arne, Stridh, Martin, Härdig, Bjarne Madsen, Piorkowski, Christopher, ...

Aims In atrial fibrillation (AF), a relation between electrocardiogram (ECG) parameters such as fibrillatory wave amplitude and stroke has been sought with conflicting results. In this study, we...

Should we abandon the common practice of withholding oral anticoagulation in paroxysmal atrial fibrillation? (2008)

Nieuwlaat, Robby, Dinh, Trang, Olsson, S. Bertil, Camm, A. John, Capucci, Alessandro, Tieleman, Robert G., ...

Aims To assess the relation between the atrial fibrillation (AF) subtype and thrombo-embolic events. Methods and results The observational Euro Heart Survey on AF (2003–04) enrolled 1509...

Fibrillatory rate response to candesartan in persistent atrial fibrillation (2008)

Bollmann, Andreas, Tveit, Arnljot, Husser, Daniela, Stridh, Martin, Sörnmo, Leif, Smith, Pål, ...

Introduction Angiotensin-receptor blockers may exert favourable anti-arrhythmic effects in atrial fibrillation (AF), but their mechanisms are not fully understood. In this study, we tested the...

Prolonged P wave duration in adults with secundum atrial septal defect: a marker of delayed conduction rather than increased atrial size? (2007)

Thilén, Ulf, Carlson, Jonas, Platonov, Pyotr G., Havmöller, Rasmus, Olsson, S. Bertil

Aims Although atrial fibrillation is a frequent complication of an atrial septal defect (ASD) of the secundum type, the underlying mechanisms are poorly understood. Atrial conduction disturbances,...

Corrigendum to 'ACC/AHA/ESC 2006 guidelines for the management of patients with atrial fibrillation: full text. A report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the European Society of Cardiology Committee for Practice Guidelines (Writing Committee to Revise the 2001 Guidelines for the Management of Patients With Atrial Fibrillation)' (2007)

Fuster, Valentin, Rydén, Lars E., Cannom, David S., Crijns, Harry J., Curtis, Anne B., Ellenbogen, Kenneth A., ...

ACC/AHA/ESC 2006 guidelines for the management of patients with atrial fibrillation executive summary. A report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the European Society of Cardiology Committee for Practice Guidelines (Writing Committee to Revise the 2001 Guidelines for the Management of Patients with Atrial Fibrillation) (2007)

Fuster, Valentin, Rydén, Lars E., Cannom, David S., Crijns, Harry J., Curtis, Anne B., Ellenbogen, Kenneth A., ...

Electrocardiographic characteristics of fibrillatory waves in new-onset atrial fibrillation (2007)

Husser, Daniela, Cannom, David S., Bhandari, Anil K., Stridh, Martin, Sörnmo, Leif, Olsson, S. Bertil, ...

Aims In atrial fibrillation (AF), fibrillatory waves of surface electrocardiograms (ECG) vary among patients with respect to waveform and repetition rate. The purpose of this study was to (i) explore...

Exercise testing for non-invasive assessment of atrial electrophysiological properties in patients with persistent atrial fibrillation (2007)

Husser, Oliver, Husser, Daniela, Stridh, Martin, Sörnmo, Leif, Corino, Valentina D.A., Mainardi, Luca T., ...

Aims Experimental studies suggest that the autonomic nervous system modulates atrial refractoriness and conduction velocity in atrial fibrillation (AF). These modulatory effects are, however,...

Atrial fibrillatory rate and risk of left atrial thrombus in atrial fibrillation (2007)

Bollmann, Andreas, Husser, Daniela, Stridh, Martin, Holmqvist, Fredrik, Roijer, Anders, Meurling, Carl J., ...

Aims In atrial fibrillation (AF), a relation between electrocardiogram (ECG) fibrillatory wave amplitude and thrombus formation has been sought for long with conflicting results. In contrast, the...

Atrial fibrillatory rate and risk of left atrial thrombus in atrial fibrillation. (2007)

Bollmann, Andreas, Husser, Daniela, Stridh, Martin, Holmqvist, Fredrik, Roijer, Anders, Meurling, Carl J, ...

Abstract is not available

Variable interatrial conduction illustrated in a hypertrophic cardiomyopathy population. (2007)

Holmqvist, Fredrik, Platonov, Pyotr G, Carlson, Jonas, Havmoller, Rasmus, Waktare, Johan E P, McKenna, William J, ...

Abstract is not available

Direct Thrombin Inhibition and Stroke Prevention in Elderly Patients With Atrial Fibrillation. Experience From the SPORTIF III and V Trials. (2007)

Ford, Gary A, Choy, Anna Maria, Deedwania, Prakash, Karalis, Dean G, Lindholm, Carl-Johan, Pluta, Wladyslaw, ...

Abstract is not available

Prediction of sinus rhythm maintenance following DC-cardioversion of persistent atrial fibrillation – the role of atrial cycle length (2006)

Meurling, Carl J, Roijer, Anders, Waktare, Johan EP, Holmqvist, Fredrik, Lindholm, Carl J, Ingemansson, Max P, ...

Abstract Background Atrial electrical remodeling has been shown to influence the outcome the outcome following cardioversion of atrial fibrillation (AF) in experimental studies. The aim of the...

Direct action on the molecule is one of several mechanisms by which ultrasound enhances the fibrinolytic effects of reteplase. (2006)

Hardig, Bjarne Madsen, Persson, Hans W, Olsson, S Bertil

Abstract is not available

Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation. (2006)

Holmqvist, Fredrik, Stridh, Martin, Waktare, Johan E P, Sornmo, Leif, Olsson, S Bertil, Meurling, Carl J

Abstract is not available

Detection and feature extraction of atrial tachyarrhythmias. A three stage method of time-frequency analysis. (2006)

Stridh, Martin, Bollmann, Andreas, Olsson, S Bertil, Sornmo, Leif

Abstract is not available

Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation (2006)

Holmqvist, Fredrik, Stridh, Martin, Waktare, Johan EP, Sornmo, Leif, Olsson, S Bertil, Meurling, Carl J

Aims The study set out to explore whether an index of atrial electrical electrophysiology can be used to predict atrial fibrillation (AF) relapse, and if the predictive properties differ as a result...

Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation (2006)

Holmqvist, Fredrik, Stridh, Martin, Waktare, Johan E.P., Sörnmo, Leif, Olsson, S. Bertil, Meurling, Carl J.

Aims The study set out to explore whether an index of atrial electrical electrophysiology can be used to predict atrial fibrillation (AF) relapse, and if the predictive properties differ as a result...

Antithrombotic treatment in real-life atrial fibrillation patients: a report from the Euro Heart Survey on Atrial Fibrillation (2006)

Nieuwlaat, Robby, Capucci, Alessandro, Lip, Gregory Y.H., Olsson, S. Bertil, Prins, Martin H., Nieman, Fred H., ...

Aims To describe guideline adherence and application of different stroke risk stratification schemes regarding antithrombotic therapy in real-life atrial fibrillation (AF) patients and to assess...

Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation (2006)

Holmqvist, Fredrik, Stridh, Martin, Waktare, Johan EP, Sörnmo, Leif, Olsson, S Bertil, Meurling, Carl J

Aims The study set out to explore whether an index of atrial electrical electrophysiology can be used to predict atrial fibrillation (AF) relapse, and if the predictive properties differ as a result...

ACC/AHA/ESC 2006 guidelines for the management of patients with atrial fibrillation: full text: A report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the European Society of Cardiology Committee for Practice Guidelines (Writing Committee to Revise the 2001 Guidelines for the Management of Patients With Atrial Fibrillation) Developed in collaboration with the European Heart Rhythm Association and the Heart Rhythm Society (2006)

Fuster, Valentin, Rydén, Lars E., Cannom, David S., Crijns, Harry J., Curtis, Anne B., ...

ACC/AHA/ESC 2006 guidelines for the management of patients with atrial fibrillation-executive summary: A report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the European Society of Cardiology Committee for Practice Guidelines (Writing Committee to Revise the 2001 Guidelines for the Management of Patients with Atrial Fibrillation) Developed in collaboration with the European Heart Rhythm Association and the Heart Rhythm Society (2006)

Fuster, Valentin, Rydén, Lars E., Cannom, David S., Crijns, Harry J., Curtis, Anne B., ...

Antithrombotic treatment in real-life atrial fibrillation patients: a report from the Euro Heart Survey on Atrial Fibrillation (2006)

Nieuwlaat, Robby, Capucci, Alessandro, Lip, Gregory Y.H., Olsson, S. Bertil, Prins, Martin H., Nieman, Fred H., ...

Aims To describe guideline adherence and application of different stroke risk stratification schemes regarding antithrombotic therapy in real-life atrial fibrillation (AF) patients and to assess...

Atrial fibrillatory rate and sinus rhythm maintenance in patients undergoing cardioversion of persistent atrial fibrillation (2006)

Holmqvist, Fredrik, Stridh, Martin, Waktare, Johan EP, Sornmo, Leif, Olsson, S Bertil, Meurling, Carl J

Aims The study set out to explore whether an index of atrial electrical electrophysiology can be used to predict atrial fibrillation (AF) relapse, and if the predictive properties differ as a result...

Low-energy ultrasound exposure of the streptokinase molecule may enhance but also attenuate its fibrinolytic properties. (2005)

Härdig, Bjarne Madsen, Persson, Hans W, Olsson, S Bertil

Abstract is not available

Prevention of stroke in patients with atrial fibrillation. (2005)

Olsson, S Bertil, Halperin, Jonathan L

Abstract is not available

Atrial fibrillation management: a prospective survey in ESC Member Countries: The Euro Heart Survey on Atrial Fibrillation (2005)

Nieuwlaat, Robby, Capucci, Alessandro, Camm, A. John, Olsson, S. Bertil, Andresen, Dietrich, Davies, D. Wyn, ...

Aims To describe atrial fibrillation (AF) management in member countries of the European Society of Cardiology (ESC) and to verify cardiology practices against guidelines. Methods and results Among...

Atrial fibrillation management: a prospective survey in ESC Member CountriesThe Euro Heart Survey on Atrial Fibrillation (2005)

Nieuwlaat, Robby, Capucci, Alessandro, Camm, A. John, Olsson, S. Bertil, Andresen, Dietrich, Davies, D. Wyn, ...

Aims To describe atrial fibrillation (AF) management in member countries of the European Society of Cardiology (ESC) and to verify cardiology practices against guidelines. Methods and results Among...

Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients with implantable cardioverter defibrillator (2004)

Luo, Jijian, Pripp, Carl, Hertervig, Eva, Kongstad, Ole, Ljungström, Erik, Olsson, S Bertil, ...

Abstract Background Local ventricular refractoriness and its dispersion during ventricular fibrillation (VF) have not been well evaluated, due to methodological difficulties. Methods In this study, a...

Sequential characterization of atrial tachyarrhythmias based on ECG time-frequency analysis. (2004)

Stridh, Martin, Sörnmo, Leif, Meurling, Carl J, Olsson, S Bertil

Abstract is not available

Aspirin bias in SPORTIF III trial. (2004)

Olsson, S Bertil

Abstract is not available

Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients with implantable cardioverter defibrillator. (2004)

Luo, Jijian, Pripp, Carl Magnus, Hertervig, Eva, Kongstad, Ole, Ljungström, Erik, Olsson, S Bertil, ...

Abstract is not available

Echocardiography - the 50th anniversary edler-hertz meeting 2003. (2004)

Olsson, S Bertil, Lindström, Kjell, Marsal, Karel

Abstract is not available

Arrhythmia-provoking factors and symptoms at the onset of paroxysmal atrial fibrillation: a study based on interviews with 100 patients seeking hospital assistance. (2004)

Hansson, Anders, Madsen-Härdig, Bjarne, Olsson, S Bertil

Abstract is not available

[Several alternatives for stroke prophylaxis in atrial fibrillation] (2004)

Olsson, S Bertil

Abstract is not available

Frequency Analysis of Atrial Fibrillation From the Surface Electrocardiogram (2004)

Daniela Husser, Martin Stridh, Leif Sornmo, S. Bertil Olsson, Andreas Bollmann

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and...

New advances in stroke prevention in atrial fibrillation: ximelagatran and direct thrombin inhibition (2004)

Olsson, S.Bertil

Ximelagatran is the first oral agent in a new class of direct thrombin inhibitors and is under investigation for the prevention and treatment of a range of thromboembolic disorders. Atrial...

Global Repolarization Sequence of the Right Atrium: Monophasic Action Potential Mapping in Healthy Pigs (2003)

Li, ZHEN, Hertervig, EVA, Kongstad, OLE, Holm, MAGNUS, Grins, EDGARS, Olsson, S. BERTIL, ...

Abstract is not available

Does low-energy ultrasound, known to enhance thrombolysis, affect the size of ischemic brain damage? (2003)

Härdig, Bjarne Madsen, Persson, Hans W, Gidö, Gunilla, Olsson, S Bertil

Abstract is not available

Left atrial conduction along the coronary sinus during ectopic atrial tachycardia and atrial fibrillation: a study using correlation function analysis. (2003)

Carlson, Jonas, Santos, Susana, Platonov, Pyotr G, Rasmussen, Ole Kongstad, Johansson, Rolf, Olsson, S Bertil

ntroduction: Correlation function analysis was applied to endocardial electrograms to investigate conduction patterns along the coronary sinus (CS) during sinus rhythm (SR) and atrial tachycardias....

Ekokardiografins tidiga historia - en pionjärinsats av Inge Edler [Early history of echocardiography--a pioneering work of Inge Edler] (2002)

Holmer, Nils-Gunnar, Lindström, Kjell, Lundström, Nils-Rune, Marsál, Karel, Olsson, S Bertil, Pettersson, Holger, ...

Abstract not available

Evidence for electrical remodelling of the atrial myocardium in patients with atrial fibrillation. A study using the monophasic action potential recording technique. (2002)

Hertervig, Eva J, Yuan, Shiwen, Carlson, Jonas, Kongstad-Rasmussen, Ole, Olsson, S Bertil

Experimental studies have shown that remodelling of the atrial myocardium is linked to the occurrence and perpetuation of atrial fibrillation (AF). Clinical evidence, however, is insufficient. We...

Monophasic Action Potential Mapping in Swine and Humans Using Modified-tip Ablation Catheter and Electroanatomic Mapping System. (2002)

Liu, Shaowen, Yuan, Shiwen, Hertervig, Eva, Kongstad, Ole, Holm, Magnus, Grins, Edgars, ...

OBJECTIVE: To evaluate the feasibility of monophasic action potential (MAP) mapping using a modified-tip NaviStar catheter in swine and humans. METHODS: MAP mapping was performed using the...

Dispersion of refractoriness in patients with paroxysmal atrial fibrillation: Evaluation with simultaneous endocardial recordings from both atria. (2002)

Li, Zhen, Hertervig, Eva, Carlson, Jonas, Johansson, Camilla, Olsson, S Bertil, Yuan, Shiwen

This article studies the role of dispersion of atrial refractoriness (DAR) in the genesis of atrial fibrillation (AF). A 20-polar Halo catheter or a 40-polar basket catheter was placed in the right...

Dispersion of atrial repolarization in patients with paroxysmal atrial fibrillation (2001)

Li, Z., Hertervig, E., Yuan, S., Yang, Y., Lin, Z., Olsson, S. Bertil

To study the role of the dispersion of atrial repolarization (DAR) in the genesis of atrial fibrillation (AF), monophasic action potentials (MAP) were recorded simultaneously from a catheter at the...

Non-invasive assessment of the atrial cycle length during atrial fibrillation in man: introducing, validating and illustrating a new ECG method (1998)

Holm, Magnus, Pehrson, Steen, Ingemansson, Max, Sörnmo, Leif, Johansson, Rolf, Sandhall, Lennart, ...

Objectives: Atrial fibrillation (AF) in man has previously been shown to include a wide variety of atrial activity. Assessment of the characteristics of this arrhythmia with a commonly applicable...

Clinical magnetic resonance angiography: Edited by C M Anderson, R R Edelman and P A Turski. (Pp 498; $170.50.) New York: Raven Press, 1992. ISBN 0-7817-0094-9 (1995)

Olivecrona, Göran, Reynisson, Kristbjörn, Olsson, S Bertil

Prediction of terminal atrial myocardial repolarisation from incomplete phase 3 data (1989)

OLSSON, S BERTIL, CAI, NAISHENG, EDVARDSSON, NILS, TALWAR, KEWAL K

The duration of the monophasic action potential (MAP) carries prognostic antiarrhythmic information when the recording is done during sinus rhythm (SR) after DC conversion of atrial fibrillation...

Methodological aspects of the use of heart rate stratified RR interval histograms in the analysis of atrioventricular conduction during atrial fibrillation (1987)

CAI, NAISHENG, DOHNAL, MICHAL, OLSSON, S BERTIL

A new computer assisted method for analysing RR interval histograms was devised in 32 patients with sustained atrial fibrillation. Twenty four hour ECG recordings were divided consecutively into...

Adaptation of human atrial muscle repolarisation after high rate stimulation (1985)

OLSSON, S BERTIL, BROMAN, HOLGER, HELLSTRÖM, CLAES, TALWAR, KEWAL K, VOLKMANN, REINHARD

We analysed the effect of a sudden change from a high rate of stimulation to a "physiological" rate upon the repolarisation of human atrial muscle. Microelectrode technique was used to study the...

Acute effects of lignocaine, procainamide, metoprolol, digoxin and atropine on human myocardial refractoriness (1984)

EDVARDSSON, NILS, HIRSCH, ISAAC, OLSSON, S BERTIL

The acute intravenous effects of therapeutic doses of procainamide, lignocaine, metoprolol, digoxin and atropine on the monophasic action potentials (MAP) and effective refractory periods of the...

Book reviews (1981)

OLSSON, S. BERTIL

Effect of mexiletine on monophasic action potentials recorded from the right ventricle in man (1979)

HARPER, RICHARD W., OLSSON, S. BERTIL, VARNAUSKAS, E.

The effect of mexiletine, a new antiarrhythmic agent, on ventricular refractoriness and monophasic action potentials recorded from the right ventricle was studied in nine subjects. The effective...

Effect of mexiletine on conduction of premature ventricular beats in man: a study using monophasic action potential recordings from the right ventricle (1979)

HARPER, RICHARD W., OLSSON, S. BERTIL

Ventricular conduction intervals between a stimulating pacemaker electrode at the right ventricular apex and an impulse detecting monophasic action potential electrode at the right ventricular septum...

A simple analogue computer for cardiac output determination by thermodilution (1972)

OLSSON, S. BERTIL, WASSÉN, RUNE, VARNAUSKAS, ED, WALLMAN, HENRY

AUTHORS' SYNOPSISA cardiac output (CO) computer with digital presentation of calculated CO values has been constructed. The computer system and calibration technique is described. The computer...

Monophasic action potentials of right heart : suction electrode method in clinical investigations / (1971)

Olsson, S. Bertil.

Thesis (doctoral)--Universitetet i Göteborg.

Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients with implantable cardioverter defibrillator

Luo, Jijian, Pripp, Carl Magnus, Hertervig, Eva, Kongstad, Ole, Ljungström, Erik, Olsson, S Bertil, ...

Prediction of sinus rhythm maintenance following DC-cardioversion of persistent atrial fibrillation – the role of atrial cycle length

Meurling, Carl J, Roijer, Anders, Waktare, Johan EP, Holmqvist, Fredrik, Lindholm, Carl J, Ingemansson, Max P, ...

Frequency Analysis of Atrial Fibrillation From the Surface Electrocardiogram

Husser, Daniela, Stridh, Martin, Sornmo, Leif, Olsson, S. Bertil, Bollmann, Andreas

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and...

Non-invasive evaluation of ventricular refractoriness and its dispersion during ventricular fibrillation in patients with implantable cardioverter defibrillator

Luo, Jijian, Pripp, Carl Magnus, Hertervig, Eva, Kongstad, Ole, Ljungström, Erik, Olsson, S Bertil, ...

Prediction of sinus rhythm maintenance following DC-cardioversion of persistent atrial fibrillation – the role of atrial cycle length

Meurling, Carl J, Roijer, Anders, Waktare, Johan EP, Holmqvist, Fredrik, Lindholm, Carl J, Ingemansson, Max P, ...

Frequency Analysis of Atrial Fibrillation From the Surface Electrocardiogram

Husser, Daniela, Stridh, Martin, Sornmo, Leif, Olsson, S. Bertil, Bollmann, Andreas

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and...