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Dive into the research topics where Sigrun Halvorsen is active.

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Featured researches published by Sigrun Halvorsen.


European Heart Journal | 2018

2017 ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation: The Task Force for the management of acute myocardial infarction in patients presenting with ST-segment elevation of the European Society of Cardiology (ESC).

Borja Ibanez; Stefan James; Stefan Agewall; Manuel J. Antunes; Chiara Bucciarelli-Ducci; Héctor Bueno; Alida L.P. Caforio; Filippo Crea; John A. Goudevenos; Sigrun Halvorsen; Gerhard Hindricks; Adnan Kastrati; Mattie J. Lenzen; Eva Prescott; Marco Roffi; Marco Valgimigli; Christoph Varenhorst; Pascal Vranckx; Petr Widimsky; Jean-Philippe Collet; Steen Dalby Kristensen; Victor Aboyans; Andreas Baumbach; Raffaele Bugiardini; Ioan Mircea Coman; Victoria Delgado; Donna Fitzsimons; Oliver Gaemperli; Anthony H. Gershlick; Stephan Gielen

2017 ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation The Task Force for the management of acute myocardial infarction in patients presenting with ST-segment elevation of the European Society of Cardiology (ESC)


European Heart Journal | 2014

Management of antithrombotic therapy in atrial fibrillation patients presenting with acute coronary syndrome and/or undergoing percutaneous coronary or valve interventions: a joint consensus document of the European Society of Cardiology Working Group on Thrombosis, European Heart Rhythm Association (EHRA), European Association of Percutaneous Cardiovascular Interventions (EAPCI) and European Association of Acute Cardiac Care (ACCA) endorsed by the Heart Rhythm Society (HRS) and Asia-Pacific Heart Rhythm Society (APHRS)

Gregory Y.H. Lip; Stephan Windecker; Kurt Huber; Paulus Kirchhof; Francisco Marín; Jurriën M. ten Berg; Karl Georg Haeusler; Giuseppe Boriani; Davide Capodanno; Martine Gilard; Uwe Zeymer; Deirdre A. Lane; Robert F. Storey; Héctor Bueno; Jean Philippe Collet; Laurent Fauchier; Sigrun Halvorsen; Maddalena Lettino; Joao Morais; Christian Mueller; Tatjana S. Potpara; Lars Hvilsted Rasmussen; Andrea Rubboli; Juan Tamargo; Marco Valgimigli; Jose Luis Zamorano

Atrial fibrillation (AF) confers a substantial risk of mortality and morbidity from stroke and thrombo-embolism, and this common cardiac arrhythmia represents a major healthcare burden in Europe.1 Stroke prevention is central to the management of AF patients, with the 2012 focused update of the European Society of Cardiology (ESC) guidelines2 recommending oral anticoagulation (OAC) using well-controlled adjusted dose vitamin K antagonists (VKAs, e.g. warfarin) or non-VKA oral anticoagulants (NOACs, previously referred to as new or novel OACs3) for patients with AF and ≥1 stroke risk factor(s). Also, these guidelines strongly advocate a clinical practice shift so that the initial decision step now is the identification of ‘truly low risk’ patients, essentially those aged <65 years without any stroke risk factor (both male and female), who do not need any antithrombotic therapy.2 The ESC guidelines also recommend the use of the CHA2DS2-VASc score4 for stroke risk assessment, and define ‘low-risk’ patients as those with a CHA2DS2-VASc score = 0 (males) or score = 1 (females). Subsequent to this initial step of identifying the low-risk patients, effective stroke prevention (which is essentially OAC) can then be offered to AF patients with ≥1 stroke risk factor(s), with treatment decisions made in consultation with patients and incorporating their preferences. In everyday clinical practice, over 80% of all patients with AF have an indication for OAC, and vascular disease co-exists in ∼30% of them.5–7 With an estimated prevalence of AF of 1–2% and ∼20% of these requiring percutaneous cardiovascular interventions over time,8 ∼1–2 million AF patients in Europe who are …


The New England Journal of Medicine | 2013

Fibrinolysis or Primary PCI in ST-Segment Elevation Myocardial Infarction

Paul W. Armstrong; Anthony H. Gershlick; Patrick Goldstein; Robert G. Wilcox; Thierry Danays; Yves Lambert; Vitaly Sulimov; Fernando Rosell Ortiz; Miodrag Ostojic; Robert C. Welsh; Antonio Carlos Carvalho; John Nanas; Hans-Richard Arntz; Sigrun Halvorsen; Kurt Huber; Stefan Grajek; Claudio Fresco; Erich Bluhmki; Anne Regelin; Katleen Vandenberghe; Kris Bogaerts; Frans Van de Werf

BACKGROUND It is not known whether prehospital fibrinolysis, coupled with timely coronary angiography, provides a clinical outcome similar to that with primary percutaneous coronary intervention (PCI) early after acute ST-segment elevation myocardial infarction (STEMI). METHODS Among 1892 patients with STEMI who presented within 3 hours after symptom onset and who were unable to undergo primary PCI within 1 hour, patients were randomly assigned to undergo either primary PCI or fibrinolytic therapy with bolus tenecteplase (amended to half dose in patients ≥75 years of age), clopidogrel, and enoxaparin before transport to a PCI-capable hospital. Emergency coronary angiography was performed if fibrinolysis failed; otherwise, angiography was performed 6 to 24 hours after randomization. The primary end point was a composite of death, shock, congestive heart failure, or reinfarction up to 30 days. RESULTS The primary end point occurred in 116 of 939 patients (12.4%) in the fibrinolysis group and in 135 of 943 patients (14.3%) in the primary PCI group (relative risk in the fibrinolysis group, 0.86; 95% confidence interval, 0.68 to 1.09; P=0.21). Emergency angiography was required in 36.3% of patients in the fibrinolysis group, whereas the remainder of patients underwent angiography at a median of 17 hours after randomization. More intracranial hemorrhages occurred in the fibrinolysis group than in the primary PCI group (1.0% vs. 0.2%, P=0.04; after protocol amendment, 0.5% vs. 0.3%, P=0.45). The rates of nonintracranial bleeding were similar in the two groups. CONCLUSIONS Prehospital fibrinolysis with timely coronary angiography resulted in effective reperfusion in patients with early STEMI who could not undergo primary PCI within 1 hour after the first medical contact. However, fibrinolysis was associated with a slightly increased risk of intracranial bleeding. (Funded by Boehringer Ingelheim; ClinicalTrials.gov number, NCT00623623.).


Journal of the American College of Cardiology | 2010

Efficacy and Safety of Immediate Angioplasty Versus Ischemia-Guided Management After Thrombolysis in Acute Myocardial Infarction in Areas With Very Long Transfer Distances Results of the NORDISTEMI (NORwegian study on DIstrict treatment of ST-Elevation Myocardial Infarction)

Ellen Bøhmer; Pavel Hoffmann; Michael Abdelnoor; Harald Arnesen; Sigrun Halvorsen

OBJECTIVES The goal of this study was to compare a strategy of immediate transfer for percutaneous coronary intervention (PCI) with an ischemia-guided approach after thrombolysis in patients with very long transfer distances to PCI. BACKGROUND Thrombolysis remains the treatment of choice in ST-segment elevation myocardial infarction (STEMI) when primary PCI cannot be performed within 90 to 120 min. The optimal treatment after thrombolysis is still unclear. METHODS A total of 266 patients with acute STEMI living in rural areas with more than 90-min transfer delays to PCI were treated with tenecteplase, aspirin, enoxaparin, and clopidogrel and randomized to immediate transfer for PCI or to standard management in the local hospitals with early transfer, only if indicated for rescue or clinical deterioration. The primary outcome was a composite of death, reinfarction, stroke, or new ischemia at 12 months, and analysis was by intention to treat. RESULTS The primary end point was reached in 28 patients (21%) in the early invasive group compared with 36 (27%) in the conservative group (hazard ratio: 0.72, 95% confidence interval: 0.44 to 1.18, p = 0.19). The composite of death, reinfarction, or stroke at 12 months was significantly reduced in the early invasive compared with the conservative group (6% vs. 16%, hazard ratio: 0.36, 95% confidence interval: 0.16 to 0.81, p = 0.01). No significant differences in bleeding or infarct size were observed. CONCLUSIONS Immediate transfer for PCI did not improve the primary outcome significantly, but reduced the rate of death, reinfarction, or stroke at 12 months in patients with STEMI, treated with thrombolysis and clopidogrel in areas with long transfer distances. (Norwegian Study on District Treatment of ST-Elevation Myocardial Infarction; NCT00161005).


European Heart Journal | 2014

Efficacy and safety of apixaban compared with warfarin according to age for stroke prevention in atrial fibrillation: observations from the ARISTOTLE trial.

Sigrun Halvorsen; Dan Atar; Hongqiu Yang; Raffaele De Caterina; Çetin Erol; David A. Garcia; Christopher B. Granger; Michael Hanna; Claes Held; Steen Husted; Elaine M. Hylek; Petr Jansky; Renato D. Lopes; Witold Rużyłło; Laine Thomas; Lars Wallentin

Aims The risk of stroke in patients with atrial fibrillation (AF) increases with age. In the ARISTOTLE trial, apixaban when compared with warfarin reduced the rate of stroke, death, and bleeding. We evaluated these outcomes in relation to patient age. Methods and results A total of 18 201 patients with AF and a raised risk of stroke were randomized to warfarin or apixaban 5 mg b.d. with dose reduction to 2.5 mg b.d. or placebo in 831 patients with ≥2 of the following criteria: age ≥80 years, body weight ≤60 kg, or creatinine ≥133 μmol/L. We used Cox models to compare outcomes in relation to patient age during 1.8 years median follow-up. Of the trial population, 30% were <65 years, 39% were 65 to <75, and 31% were ≥75 years. The rates of stroke, all-cause death, and major bleeding were higher in the older age groups (P < 0.001 for all). Apixaban was more effective than warfarin in preventing stroke and reducing mortality across all age groups, and associated with less major bleeding, less total bleeding, and less intracranial haemorrhage regardless of age (P interaction >0.11 for all). Results were also consistent for the 13% of patients ≥80 years. No significant interaction with apixaban dose was found with respect to treatment effect on major outcomes. Conclusion The benefits of apixaban vs. warfarin were consistent in patients with AF regardless of age. Owing to the higher risk at older age, the absolute benefits of apixaban were greater in the elderly.


European Heart Journal | 2015

Effect of intravenous TRO40303 as an adjunct to primary percutaneous coronary intervention for acute ST-elevation myocardial infarction: MITOCARE study results

Dan Atar; Håkan Arheden; Alain Berdeaux; Jean-Louis Bonnet; Marcus Carlsson; Peter Clemmensen; Valerie Cuvier; Nicolas Danchin; Jean-Luc Dubois-Randé; Henrik Engblom; David Erlinge; Huseyin Firat; Sigrun Halvorsen; Henrik Steen Hansen; Wilfried Hauke; Einar Heiberg; Sasha Koul; Alf-Inge Larsen; Philippe Le Corvoisier; Jan Erik Nordrehaug; Franck Paganelli; Rebecca M. Pruss; Hélène Rousseau; Sophie Schaller; Giles Sonou; Vegard Tuseth; Julien Veys; Eric Vicaut; Svend Eggert Jensen

AIM The MITOCARE study evaluated the efficacy and safety of TRO40303 for the reduction of reperfusion injury in patients undergoing revascularization for ST-elevation myocardial infarction (STEMI). METHODS Patients presenting with STEMI within 6 h of the onset of pain randomly received TRO40303 (n = 83) or placebo (n = 80) via i.v. bolus injection prior to balloon inflation during primary percutaneous coronary intervention in a double-blind manner. The primary endpoint was infarct size expressed as area under the curve (AUC) for creatine kinase (CK) and for troponin I (TnI) over 3 days. Secondary endpoints included measures of infarct size using cardiac magnetic resonance (CMR) and safety outcomes. RESULTS The median pain-to-balloon time was 180 min for both groups, and the median (mean) door-to-balloon time was 60 (38) min for all sites. Infarct size, as measured by CK and TnI AUCs at 3 days, was not significantly different between treatment groups. There were no significant differences in the CMR-assessed myocardial salvage index (1-infarct size/myocardium at risk) (mean 52 vs. 58% with placebo, P = 0.1000), mean CMR-assessed infarct size (21.9 g vs. 20.0 g, or 17 vs. 15% of LV-mass) or left ventricular ejection fraction (LVEF) (46 vs. 48%), or in the mean 30-day echocardiographic LVEF (51.5 vs. 52.2%) between TRO40303 and placebo. A greater number of adjudicated safety events occurred in the TRO40303 group for unexplained reasons. CONCLUSION This study in STEMI patients treated with contemporary mechanical revascularization principles did not show any effect of TRO40303 in limiting reperfusion injury of the ischaemic myocardium.


Journal of the American College of Cardiology | 2014

Aspirin Therapy in Primary Cardiovascular Disease Prevention A Position Paper of the European Society of Cardiology Working Group on Thrombosis

Sigrun Halvorsen; Felicita Andreotti; Jurriën M. ten Berg; Marco Cattaneo; Sergio Coccheri; Roberto Marchioli; Joao Morais; Freek W.A. Verheugt; Raffaele De Caterina

Although the use of oral anticoagulants (vitamin K antagonists) has been abandoned in primary cardiovascular prevention due to lack of a favorable benefit-to-risk ratio, the indications for aspirin use in this setting continue to be a source of major debate, with major international guidelines providing conflicting recommendations. Here, we review the evidence in favor and against aspirin therapy in primary prevention based on the evidence accumulated so far, including recent data linking aspirin with cancer protection. While awaiting the results of several ongoing studies, we argue for a pragmatic approach to using low-dose aspirin in primary cardiovascular prevention and suggest its use in patients at high cardiovascular risk, defined as ≥2 major cardiovascular events (death, myocardial infarction, or stroke) projected per 100 person-years, who are not at increased risk of bleeding.


JAMA Cardiology | 2016

Association Between Sitagliptin Use and Heart Failure Hospitalization and Related Outcomes in Type 2 Diabetes Mellitus: Secondary Analysis of a Randomized Clinical Trial.

Darren K. McGuire; Frans Van de Werf; Paul W. Armstrong; Eberhard Standl; Joerg Koglin; Jennifer B. Green; M. Angelyn Bethel; Jan H. Cornel; Renato D. Lopes; Sigrun Halvorsen; Giuseppe Ambrosio; John B. Buse; Robert G. Josse; John M. Lachin; Michael J. Pencina; Jyotsna Garg; Yuliya Lokhnygina; R R Holman; Eric D. Peterson

IMPORTANCE Previous trial results have suggested that dipeptidyl peptidase 4 inhibitor (DPP4i) use might increase heart failure (HF) risk in type 2 diabetes mellitus (T2DM). The DPP4i sitagliptin has been shown to be noninferior to placebo with regard to primary and secondary composite atherosclerotic cardiovascular (CV) outcomes in the Trial Evaluating Cardiovascular Outcomes With Sitagliptin (TECOS). OBJECTIVE To assess the association of sitagliptin use with hospitalization for HF (hHF) and related outcomes. DESIGN, SETTING, AND PARTICIPANTS TECOS was a randomized, double-blind, placebo-controlled study evaluating the CV safety of sitagliptin vs placebo, each added to usual antihyperglycemic therapy and CV care among patients with T2DM and prevalent atherosclerotic vascular disease. The median follow-up was 2.9 years. The setting was 673 sites in 38 countries. Participants included 14 671 patients with T2DM and atherosclerotic vascular disease. The study dates were December 2008 through March 2015. INTERVENTIONS Patients were randomized to sitagliptin vs placebo added to standard care. MAIN OUTCOMES AND MEASURES Prespecified secondary analyses compared the effect on hHF, hHF or CV death, and hHF or all-cause death composite outcomes overall and in prespecified subgroups. Supportive analyses included total hHF events (first plus recurrent) and post-hHF death. Meta-analyses evaluated DPP4i effects on hHF and on hHF or CV death. RESULTS Of 14 671 patients, 7332 were randomized to sitagliptin and 7339 to placebo. Hospitalization for HF occurred in 3.1% (n = 228) and 3.1% (n = 229) of the sitagliptin and placebo groups, respectively (unadjusted hazard ratio, 1.00; 95% CI, 0.83-1.19). There was also no difference in total hHF events between the sitagliptin (n = 345) and placebo (n = 347) groups (unadjusted hazard ratio, 1.00; 95% CI, 0.80-1.25). Post-hHF all-cause death was similar in the sitagliptin and placebo groups (29.8% vs 28.8%, respectively), as was CV death (22.4% vs 23.1%, respectively). No heterogeneity for the effect of sitagliptin on hHF was observed in subgroup analyses across 21 factors (P > .10 for all interactions). Meta-analysis of the hHF results from the 3 reported DPP4i CV outcomes trials revealed moderate heterogeneity (I2 = 44.9, P = .16). CONCLUSIONS AND RELEVANCE Sitagliptin use does not affect the risk for hHF in T2DM, both overall and among high-risk patient subgroups. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00790205.


Europace | 2015

Antithrombotic management in patients undergoing electrophysiological procedures: a European Heart Rhythm Association (EHRA) position document endorsed by the ESC Working Group Thrombosis, Heart Rhythm Society (HRS), and Asia Pacific Heart Rhythm Society (APHRS).

Christian Sticherling; Francisco Marín; David H. Birnie; Giuseppe Boriani; Hugh Calkins; Gheorghe Andrei Dan; Michele Gulizia; Sigrun Halvorsen; Gerhard Hindricks; Karl-Heinz Kuck; Angel Moya; Tatjana S. Potpara; Vanessa Roldán; Roland Richard Tilz; Gregory Y.H. Lip; Bulent Gorenek; Julia H. Indik; Paulus Kirchhof; Chang Shen Ma; Calambur Narasimhan; Jonathan P. Piccini; Andrea Sarkozy; Dipen Shah; Irene Savelieva

Since the advent of the non-vitamin K antagonist oral anticoagulant (NOAC) agents, which act as direct thrombin inhibitors or inhibitors of Factor Xa, clinicians are provided with valuable alternatives to vitamin K antagonists (VKAs). At the same time, electrophysiologists frequently perform more invasive procedures, increasingly involving the left chambers of the heart. Thus, they are constantly faced with the dilemma of balancing the risk for thromboembolic events and bleeding complications. These changes in the rapidly evolving field mandate an update of the European Heart Rhythm Association (EHRA) 2008 consensus document on this topic.1 The present document covers the antithrombotic management during different ablation procedures, implantation or exchange of cardiac implantable electronical devices (CIEDs), as well as the management of peri-interventional bleeding complications. The document is not a formal guideline and due to the lack of prospective randomized controlled trials (RCTs) for many of the clinical situations encountered, the recommendations are often ‘expert opinion’. The document strives to be practical for which reason we subdivided it in the three main topics: ablation procedure, CIED implantation or generator change, and issues of peri-interventional bleeding complications on concurrent antiplatelet therapy. For quick reference, every subchapter is followed by a short section on consensus recommendations. Many RCTs are ongoing in this field and it is hoped that this document will help to prompt further well-designed studies. ### Ablation of atrial fibrillation, left atrial arrhythmias and right sided atrial flutter In patients with symptomatic paroxysmal or even persistent atrial fibrillation (AF), catheter ablation is indicated when antiarrhythmic drugs have failed in controlling recurrences or even as a first-line therapy in selected patients.2–4 Patients with AF have an increased risk of thromboembolic events, which varies according to the presence of several risk factors.5,6 Apart from their intrinsic thromboembolic risks, ablation in these patients increases thromboembolic risk due to the introduction and manipulation …


Giornale italiano di cardiologia | 2016

Linee guida ESC 2015 per il trattamento dell'endocardite infettiva: Task Force per il Trattamento dell'Endocardite Infettiva della Società Europea di Cardiologia (ESC): Con il patrocinio dell'Associazione Europea di Chirurgia Cardiotoracica (EACTS) e dell'Associazione Europea di Medicina Nucleare (EANM)

Gilbert Habib; Patrizio Lancellotti; Manuel J. Antunes; Maria Grazia Bongiorni; Jean Paul Casalta; Francesco Del Zotti; Raluca Dulgheru; Gebrine El Khoury; Paola Anna Erba; Bernard Iung; José M. Miró; Barbara J.M. Mulder; Edyta Plonska-Gosciniak; Susanna Price; Jolien W. Roos-Hesselink; Ulrika Snygg-Martin; Franck Thuny; Pilar Tornos Mas; I. Vilacosta; Jose Luis Zamorano; Çetin Erol; Petros Nihoyannopoulos; Victor Aboyans; Stefan Agewall; George Athanassopoulos; Saide Aytekin; Werner Benzer; Héctor Bueno; Lidewij Broekhuizen; Scipione Carerj

Authors/Task Force Members: Gilbert Habib* (Chairperson) (France), Patrizio Lancellotti* (co-Chairperson) (Belgium), Manuel J. Antunes (Portugal), Maria Grazia Bongiorni (Italy), Jean-Paul Casalta (France), Francesco Del Zotti (Italy), Raluca Dulgheru (Belgium), Gebrine El Khoury (Belgium), Paola Anna Erba (Italy), Bernard Iung (France), Jose M. Miro (Spain), Barbara J. Mulder (The Netherlands), Edyta Plonska-Gosciniak (Poland), Susanna Price (UK), Jolien Roos-Hesselink (The Netherlands), Ulrika Snygg-Martin (Sweden), Franck Thuny (France), Pilar Tornos Mas (Spain), Isidre Vilacosta (Spain), and Jose Luis Zamorano (Spain)Autori/Membri della Task Force Gilbert Habib (Chairperson) (Francia), Patrizio Lancellotti (co-Chairperson) (Belgio), Manuel J. Antunes (Portogallo), Maria Grazia Bongiorni (Italia), Jean-Paul Casalta (Francia), Francesco Del Zotti (Italia), Raluca Dulgheru (Belgio), Gebrine El Khoury (Belgio), Paola Anna Erbaa (Italia), Bernard Iung (Francia), Jose M. Mirob (Spagna), Barbara J. Mulder (Olanda), Edyta Plonska-Gosciniak (Polonia), Susanna Price (UK), Jolien Roos-Hesselink (Olanda), Ulrika Snygg-Martin (Svezia), Franck Thuny (Francia), Pilar Tornos Mas (Spagna), Isidre Vilacosta (Spagna), Jose Luis Zamorano (Spagna)

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Dan Atar

Oslo University Hospital

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Kurt Huber

Charles University in Prague

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Harald Arnesen

Oslo University Hospital

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Jan Eritsland

Oslo University Hospital

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