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Predictors and short-term prognosis of angiographically detected distal embolization after emergency percutaneous coronary intervention for ST-elevation acute myocardial infarction

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Abstract

Objective

Distal embolization after percutaneous coronary intervention (PCI) is one of the major mechanisms of no-reflow. The aim of the study was to investigate clinical, angiographic predictors of distal embolization on angiography in patients with ST-elevation acute myocardial infarction (AMI) after PCI, and to assess the short-term prognosis of patients with distal embolization.

Methods

There were 318 consecutive AMI patients, who underwent primary PCI within 12 h of symptom onset, and were divided into distal embolization group (N = 97) and non-distal embolization group (N = 221), based on cineangiograms performed during PCI.

Results

Distal embolization was present in 97 patients (30.5%), and more often observed in female sex (29.9 vs. 16.3%, P = 0.006), in patient with right coronary artery of infarct-related artery (IRA) (44.3 vs. 28.1%, P = 0.017), pre-revascularization thrombolysis in myocardial infarction (TIMI) flow ≤ 2 (88.7 vs. 79.2%, P = 0.004), high thrombus burden (72.2 vs. 32.1%, P < 0.001). Based on logistic regression analysis, high thrombus burden on angiography (OR 5.018, 95% CI 2.843–8.857, P < 0.001) and female sex (OR 3.020, 95% CI 1.574–5.794, P = 0.001) and right coronary artery of IRA (OR 2.218, 95% CI 1.172–4.199, P = 0.014) were independent predictors of distal embolization. Patients in distal embolization group had an increased risk of short-term major adverse events (12.4 vs. 4.5%, P = 0.011) when compared with patients in non-distal embolization group.

Conclusions

High thrombus burden on angiography before PCI and right coronary artery of IRA and female sex are the significant predictors of distal embolization in patients with AMI after PCI. In addition, distal embolization on angiography predicts an adverse short-term outcome in AMI patients.

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Authors and Affiliations

  1. Department of Cardiology, Xuanwu Hospital, Capital Medical University, Changchun Ave 45, 100053, Beijing, Xuanwu District, China

    Li Dong-bao, Hua Qi, Liu Zhi, Wang Shan & Jin Wei-ying

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  1. Li Dong-bao
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  2. Hua Qi
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  3. Liu Zhi
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  4. Wang Shan
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  5. Jin Wei-ying
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Correspondence to Hua Qi.

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Dong-bao, L., Qi, H., Zhi, L. et al. Predictors and short-term prognosis of angiographically detected distal embolization after emergency percutaneous coronary intervention for ST-elevation acute myocardial infarction. Clin Res Cardiol 98, 773–779 (2009). https://doi.org/10.1007/s00392-009-0066-5

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  • DOI: https://doi.org/10.1007/s00392-009-0066-5

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