Objective Left ventricular (LV) thrombus is a rare condition in acute cerebral infarction. The prevalence and features of cerebral infarction with LV thrombus are unclear. We explored the features of cerebral infarction due to LV thrombus.
Methods In this single-center retrospective study, we investigated consecutive patients with acute ischemic stroke admitted within seven days of the onset who had LV thrombus found by transthoracic echocardiography (TTE). First, we calculated the prevalence of LV thrombus in patients with cardioembolic stroke (CES). Second, we investigated the baseline characteristics, including the TTE findings and features of cerebral infarction due to LV thrombus.
Results From June 2012 to January 2019, a total of 5,693 patients were enrolled. Of these, 1,408 (25%) patients were diagnosed with CES. Of these 1,408 patients with CES, 13 (0.9%) had LV thrombus indicated by TTE, with dilative cardiomyopathy, subacute myocardial infarction, and old myocardial infarction present in 1 (8%), 2 (15%), and 10 (77%), respectively. The ejection fraction (EF) was 48.9% (25.3-64.7%). The maximum longitudinal size of LV thrombus was 13.4 (0.97-38.1) mm, and there was no correlation between the size of the LV thrombus and the EF. Regarding the features of cerebrovascular infarction, major vessel occlusion was observed in 10 (77%) patients. Six (46%) patients were found to have good outcomes (modified Rankin Scale 0-2) at 90 days after the onset.
Conclusion LV thrombus was seen in 0.9% of patients with CES. Many of the patients with LV thrombus had major vessel occlusion.
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