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Relationship Between Early and Late Nonsustained Ventricular Tachycardia and Cardiovascular Death in Patients With Acute Coronary Syndrome in the Platelet Inhibition and Patient Outcomes (PLATO) Trial
Harvard Univ, Sch Med, Brigham & Womens Hosp,Dept Med,Cardiovasc Div, Thrombolysis Myocardial Infarct TIMI Study Grp, Boston, MA 02115 USA..
Harvard Univ, Sch Med, Brigham & Womens Hosp,Dept Med,Cardiovasc Div, Thrombolysis Myocardial Infarct TIMI Study Grp, Boston, MA 02115 USA..
INSERM Unite 1148, Paris, France.;Hop Bichat Claude Bernard, AP HP, Dept Hosp Univ FIRE, F-75877 Paris, France.;Univ Paris Diderot, Sorbonne Paris Cite, Dept Cardiol, Paris, France.;NHLI Imperial Coll, ICMS, Dept Cardiol, Royal Brompton Hosp, London, England..
Univ Sheffield, Dept Cardiovasc Sci, Sheffield, S Yorkshire, England..
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2016 (English)In: Circulation: Arrhythmia and Electrophysiology, ISSN 1941-3149, E-ISSN 1941-3084, Vol. 9, no 2, e002951Article in journal (Refereed) PublishedText
Abstract [en]

Background- Nonsustained ventricular tachycardia (NSVT) is common after acute coronary syndrome (ACS) and a marker of increased risk of arrhythmogenic death. However, the prognostic significance of NSVT when evaluated with other contemporary risk markers and at later time points after ACS remains uncertain. Methods and Results- In the Platelet Inhibition and Patient Outcomes (PLATO) trial, continuous ECGs were performed during the first 7 days after ACS (n=2866) and repeated for another 7 days at day 30 (n=1991). Median follow-up was 1 year. There was a time-varying interaction between NSVT and cardiovascular death such that NSVT was significantly associated with increased risk within the first 30 days after randomization (22/999 [2.2%] versus 16/1825 [0.9%]; adjusted hazard ratio, 2.84; 95% confidence interval, 1.39-5.79; P=0.004) but not after 30 days (28/929 [3.0%] versus 42/1734 [2.4%]; P=0.71). Detection of NSVT during the convalescent phase (n=428/1991; 21.5%) was also associated with an increased risk of cardiovascular death, and was most marked within the first 2 months after detection (1.9% versus 0.3%; adjusted hazard ratio, 5.48; 95% confidence interval, 1.07-28.20; P=0.01), and then decreasing over time such that the relationship was no longer significant by approximate to 5 months after ACS. Conclusions- NSVT occurred frequently during the acute and convalescent phases of ACS. The risk of cardiovascular death associated with NSVT was the greatest during the first 30 days after presentation; however, patients with NSVT detected during the convalescent phase were also at a significantly increased risk of cardiovascular death that persisted for an additional several months after the index event.

Place, publisher, year, edition, pages
2016. Vol. 9, no 2, e002951
Keyword [en]
cardiovascular death, acute coronary syndrome, electrocardiography, tachycardia, ventricular, sudden cardiac death
National Category
Cardiac and Cardiovascular Systems
URN: urn:nbn:se:uu:diva-281837DOI: 10.1161/CIRCEP.115.002951ISI: 000370342300001OAI: oai:DiVA.org:uu-281837DiVA: diva2:917315
Available from: 2016-04-06 Created: 2016-03-30 Last updated: 2016-04-06Bibliographically approved

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James, Stefan K.Held, ClaesVarenhorst, ChristophWallentin, Lars
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