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Characterisation of acute ischemic stroke in patients with left ventricular thrombi after myocardial infarction

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Abstract

Acute ischemic stroke (AIS) is a feared complication in post-acute myocardial infarction (AMI) patients who develop left ventricular (LV) thrombus. There is limited data available on the incidence of stroke in this population, and characterisation of stroke subtypes has not been previously reported. Our study aims to evaluate the incidence of AIS in post-AMI patients with LV thrombus and to characterise the pattern of stroke subtypes. We screened 5829 patients with echocardiogram reports containing the “thrombus” keyword from August 2006 to September 2017. AIS that occurred after LV thrombosis was captured and relevant clinical data was collected. We identified 289 post-AMI patients with acute LV thrombus formation. Mean age was 59.3 ± 13.4 years. AIS occurred in 34 patients (11.8%), median duration of 20.5 days (IQR = 5.5–671.8) after LV thrombosis. Despite initial thrombus resolution, nine (5.2%) encountered AIS subsequently. Cardioembolic stroke subtype was identified in 76.5% of AIS, whilst 14.7% was small vessel disease and 8.8% was of large artery atherosclerosis subtype. Presence of thrombus protrusion (HR 3.04, 95% CI 1.25–7.41, p = 0.01), failure of initial thrombus resolution (HR 3.03, 95% CI 1.23–7.45, p = 0.02) and thrombus recurrence (HR 4.20, 95% CI 1.46–12.11, p < 0.01) were significant independent predictors for stroke. Incidence of AIS in this Asian population of post-AMI patients with LV thrombus was 11.8%. Duration of anticoagulation may need to be individualised for patients with higher risk for stroke occurrence after LV thrombosis.

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Author notes

  1. Aloysius Sheng-Ting Leow and Ching-Hui Sia contributed equally to this manuscript.

Authors and Affiliations

  1. Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

    Aloysius Sheng-Ting Leow

  2. Department of Cardiology, National University Heart Centre, Singapore, Singapore

    Ching-Hui Sia, Rajinderdeep Kaur, Tiong-Cheng Yeo, Mark Yan-Yee Chan, Edgar Lik-Wui Tay & Joshua Ping-Yun Loh

  3. Division of Neurology, Department of Medicine, National University Health System, Singapore, Singapore

    Benjamin Yong-Qiang Tan, Raymond Chee-Seong Seet & Leonard Leong-Litt Yeo

  4. Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

    Tiong-Cheng Yeo, Mark Yan-Yee Chan, Edgar Lik-Wui Tay, Raymond Chee-Seong Seet, Joshua Ping-Yun Loh & Leonard Leong-Litt Yeo

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  1. Aloysius Sheng-Ting Leow
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Correspondence to Aloysius Sheng-Ting Leow.

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Leow, A.ST., Sia, CH., Tan, B.YQ. et al. Characterisation of acute ischemic stroke in patients with left ventricular thrombi after myocardial infarction. J Thromb Thrombolysis 48, 158–166 (2019). https://doi.org/10.1007/s11239-019-01829-6

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