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Stroke After Primary Percutaneous Coronary Intervention in Patients With ST-Segment Elevation Myocardial Infarction Timing, Characteristics, and Clinical Outcomes

Guptill, Jeffrey T. (author)
Mehta, Rajendra H. (author)
Armstrong, Paul W. (author)
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Horton, John (author)
Laskowitz, Daniel (author)
James, Stefan (author)
Uppsala universitet,Uppsala kliniska forskningscentrum (UCR)
Granger, Christopher B. (author)
Lopes, Renato D. (author)
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 (creator_code:org_t)
2013
2013
English.
In: Circulation. Cardiovascular Interventions. - 1941-7640 .- 1941-7632. ; 6:2, s. 176-183
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Background-Stroke is a rare but potentially devastating complication of acute myocardial infarction. Little is known about stroke timing, characteristics, and clinical outcomes in patients with ST-segment elevation myocardial infarction treated with primary percutaneous coronary intervention (PCI). Methods and Results-We studied 5372 patients enrolled in the Assessment of Pexelizumab in Acute Myocardial Infarction (APEX-AMI) trial. We analyzed stroke incidence, type, timing, and association with the prespecified 90-day clinical outcomes. Cox proportional hazards modeling was performed to assess the relationship between stroke and outcomes, after adjusting baseline characteristics and analyzing stroke as a time-dependent covariate. Stroke occurred in 69 primary patients with PCI (1.3%). A third of strokes were ischemic (n=23; 33%), 12% (n=8) were hemorrhagic, and the remaining 55% (n=38) were of uncertain type. The median (25th, 75th percentile) time of stroke occurrence was 6 (3, 14) days. Overall, 43% of strokes occurred within 48 hours of PCI, and all hemorrhagic strokes occurred within 48 hours. Stroke was associated with an increased risk of 90-day death (unadjusted hazard ratio [HR], 8.0; 95% confidence interval [CI], 4.8-13.5), congestive heart failure (unadjusted HR, 3.2; 95% CI, 1.3-7.8), and 30-day hospital readmission (unadjusted HR, 3.2; 95% CI, 2.0-5.1). After adjustment, stroke was still strongly associated with 90-day death (adjusted HR, 5.6; 95% CI, 3.2-9.8) and the combination end point of death, congestive heart failure, or cardiogenic shock at 90 days (adjusted HR, 2.4; 95% CI, 1.2-4.7). Conclusions-Stroke is an infrequent complication in the setting of ST-segment elevation myocardial infarction treated with primary PCI but is associated with increased morbidity and mortality. Studies to determine mechanisms that may be responsible for strokes that occur >48 hours from primary PCI are warranted.

Keyword

myocardial infarction
myocardial reperfusion
outcomes
primary percutaneous coronary intervention
stroke

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ref (subject category)
art (subject category)

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