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Hemorrhagic stroke the first 30 days after an acute myocardial infarction: incidence, time trends and predictors of risk
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine. Department of Internal Medicine, Section of Cardiology, Östersund Hospital, Sweden and Department of Public Health and Clinical Medicine, Östersund, Umeå University, Sweden.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine. Department of Internal Medicine, Section of Cerebrovascular Diseases, Östersund Hospital, Sweden and Department of Public Health and Clinical Medicine, Östersund, Umeå University, Sweden.
Department of Medicine, Section of Cardiology, Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
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2014 (English)In: International Journal of Cardiology, ISSN 0167-5273, E-ISSN 1874-1754, Vol. 176, no 1, 133-138 p.Article in journal (Refereed) Published
Abstract [en]

Background/objectives: Hemorrhagic stroke is a rare but serious complication after an acute myocardial infarction (AMI). The aims of our study were to establish the incidence, time trends and predictors of risk for hemorrhagic stroke within 30 days after an AMI in 1998-2008. Methods: We collected data from the Register of Information and Knowledge about Swedish Heart Intensive Care Admissions (RIKS-HIA). All patients with a myocardial infarction 1998-2008 were included, n = 173,233. The data was merged with the National Patient Register in order to identify patients suffering a hemorrhagic stroke. To identify predictors of risk we used Cox models. Results: Overall the incidence decreased from 0.2% (n = 94) in 1998-2000 to 0.1% (n = 41) in 2007-2008. In patients with ST-elevation myocardial infarction the corresponding incidences were 0.4% (n = 76) in 1998-2000 and 0.2% (n = 21) in 2007-2008, and after fibrin specific thrombolytic treatment 0.6% and 1.1%, respectively, with a peak of 1.4% during 2003-2004. In total 375 patients (0.22%) suffered a hemorrhagic stroke within 30 days of the AMI. The preferred method of reperfusion changed from thrombolysis to percutaneous coronary intervention (PCI). Older age (hazard ratio (HR) >65- <= 75 vs <= 65 years 1.84, 95% confidence interval (CI) 1.38-2.45), thrombolysis (HR 6.84, 95% CI 5.51-8.48), history of hemorrhagic stroke (HR 12.52, CI 8.36-18.78) and prior hypertension (HR 1.52, CI 1.23-1.86) independently predicted hemorrhagic stroke within 30 days. Conclusions: The rate of hemorrhagic stroke within 30 days of an AMI has decreased by 50% between 1998 and 2008. The main reason is the shift in reperfusion method from thrombolysis to PCI. 

Place, publisher, year, edition, pages
2014. Vol. 176, no 1, 133-138 p.
Keyword [en]
Myocardial infarction, Hemorrhagic stroke, Time trend, Predictor
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:umu:diva-93472DOI: 10.1016/j.ijcard.2014.07.032ISI: 000341040900030OAI: oai:DiVA.org:umu-93472DiVA: diva2:785188
Available from: 2015-02-02 Created: 2014-09-23 Last updated: 2017-12-05Bibliographically approved

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