关键词: 缺血性卒中; 中国; 美国; 文献计量; CiteSpace软件

Abstract: Objective To conduct bibliometric analysis of ischemic stroke studies published in China and the United States (US) from 2010 to 2020, display the main research forces and outstanding scholars in the field of ischemic stroke in the two countries, and compare the hot spots of ischemic stroke research between China and US, so as to provide research ideas and reference for subsequent scholars in this field. Methods Based on the core collection database of Web of Science, English literature published from China and US between 2010 and 2020 were retrieved using the subject word of ischemic stroke. The bibliometric analysis was used to analyze the types, institutions and journals of

publications. For the original contributions, the cluster analysis based on CiteSpace software was

performed to analyze the research characteristics in this field between China and US. The citation analysis was performed for the reference using the four literature evaluation indexes, including citation frequency, emergence value, centrality and Sigma, to analyze the main research forces, hot spots, etc. Results From 2010 to 2020, the number of publications published by Chinese scholars in the field of ischemic stroke increased year by year, with a total of 13 109 SCI articles published. The number of publications by American scholars showed a fluctuating increase, with a total of 21 706 published. The median journals of the top 10 publications of Chinese scholars were located in Q2, with an impact factor of 2.815. The median journals of the top 10 publications of American scholars were located in Q1, with an impact factor of 5.282. Capital Medical University was the main research institution in China, while Harvard University and the University of California system were the main research institutions in the US. Cluster analysis showed that the most common concerned research topics by Chinese and American scholars were atrial fibrillation, neuroinflammation and thrombectomy. In addition, Chinese scholars also paid attention to acute ischemic stroke, MALAT1, mild stroke, neuroprotection, homocysteine, mortality and depression; American scholars also paid attention to thrombolysis, carotid endarterectomy, perfusion, telemedicine and stroke classification, etc., and the above research topics can become the research focus of continuous attention in the near future. Conclusions At present, the research achievements of American scholars have great influence, and Chinese scholars need to deepen the cooperation with major international research institutions. Chinese and American scholars focused on three research topics, thrombectomy, neuroinflammation and atrial fibrillation.

Key words: Ischemic stroke; China; The United States; Bibliometrics; CiteSpace software