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Impact of Thrombus Aspiration on Mortality, Stent Thrombosis, and Stroke in Patients With ST-Segment-Elevation Myocardial Infarction: A Report From the Swedish Coronary Angiography and Angioplasty Registry
Gothenburg Univ, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden.;Sahlgrens Univ Hosp, Dept Cardiol, Gothenburg, Sweden..
Gothenburg Univ, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden.;Sahlgrens Univ Hosp, Dept Cardiol, Gothenburg, Sweden..
Gothenburg Univ, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden.;Sahlgrens Univ Hosp, Dept Cardiol, Gothenburg, Sweden..
Orebro Univ Hosp, Dept Cardiol, Gothenburg, Sweden..
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2018 (English)In: Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, ISSN 2047-9980, E-ISSN 2047-9980, Vol. 7, no 1, article id e007680Article in journal (Refereed) Published
Abstract [en]

Background-Thrombus aspiration is still being used in a substantial number of patients despite 2 large randomized clinical trials showing no favorable effect of routine thrombus aspiration during primary percutaneous coronary intervention in patients with STsegment- elevation myocardial infarction. The aim of this observational study was to evaluate the impact of thrombus aspiration on mortality, stent thrombosis, and stroke using all available data from the Swedish Coronary Angiography and Angioplasty Registry (SCAAR). Methods and Results-We identified 42 829 consecutive patients registered in SCAAR between January 2005 and September 2014 who underwent percutaneous coronary intervention for ST-segment-elevation myocardial infarction. Thrombus aspiration was used in 25% of the procedures. We used instrumental variable analysis with administrative healthcare region as the treatmentpreference instrumental variable to evaluate the effect of thrombus aspiration on mortality, stent thrombosis, and stroke. Thrombus aspiration was not associated with mortality at 30 days (risk reduction: -1.2; 95% confidence interval [CI], -5.4 to 3.0; P=0.57) and 1 year (risk reduction: -2.4; 95% CI, -7.6 to 3.0; P=0.37). Thrombus aspiration was associated with a lower risk of stent thrombosis both at 30 days (risk reduction: -2.7; 95% CI, -4.1 to -1.4; P<0.001) and 1 year (risk reduction: -3.5; 95% CI, -5.3 to -1.7; P<0.001). In-hospital stroke and neurologic complications did not differ between groups (risk reduction: 0.1; 95% CI, -0.8 to 1.1; P=0.76). Conclusions-Mortality was not different between the groups. Thrombus aspiration was associated with decreased risk of stent thrombosis. Our study provides important evidence for the external validity of previous randomized studies regarding mortality.

Place, publisher, year, edition, pages
WILEY , 2018. Vol. 7, no 1, article id e007680
Keywords [en]
myocardial infarction, thrombectomy, primary percutaneous coronary intervention
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:uu:diva-351061DOI: 10.1161/JAHA.117.007680ISI: 000428139900020OAI: oai:DiVA.org:uu-351061DiVA, id: diva2:1211387
Funder
Swedish Research Council, VR 2008-2487Available from: 2018-05-30 Created: 2018-05-30 Last updated: 2018-05-30Bibliographically approved

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