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| Evidence based visualization analysis of literature on ECG Tp-Te interval in the China Journal Full text Database and Web of Science Database |
| DONG Nengbin, JIANG Bin, HU Kai, SHOU Jinliang |
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Abstract Objective To understand the research advances of ECG Tp-Te interval in the past 20 years, and to explore its current research hot spots and future research directions. Methods From the China Journal Fulltext Database and Web of Science Database, we searched the related literature with “Tp-Te” or “Tp-e” as article search words published in the past 20 years from 2002-01-01 to 2021-12-31. Excel 2019 and bibliometric analysis software VOSviewer 1.6.17 were applied in the literature classification, clustering of key words, and visualization analysis of countries, institutional cooperation and their sequential variation. Maps were correspondingly drawn. Results A total of 414 Chinese and 669 English papers are retrieved from the two databases, respectively. The number of related Chinese literature has shown an obvious and progressive increase after 2006, reaching the peak in 2017. Since then, the number of publications has leveled off. Literature in English shows two peaks in all during the statistics period, separately in 2006 and 2021; the number of literature approximately shows an incremental trend from 2009. A large number of related articles are published in several fixed journals without significant difference in the number of published articles. In the national clustering diagram of English literature, Turkey, although publishing a large number of papers, has no much cooperation with other countries; the United States has the most cooperation with other countries, followed by China. There is no obvious close cooperation between institutions which published the literature. Key word clustering analysis reveals that the Chinese literature mostly focuses on ventricular arrhythmias. The research topics trend towards chronic heart failure, acute myocardial infarction, acute coronary syndrome, etc. after 2016, and also involve clinical use of drugs. English literature covers long QT interval, Tp-e/QT, mortality, sudden death, Pwave dispersion, obesity, corona virus disease 2019 and so on. Conclusion Domestic research hot spots related to Tp-Te interval are quite different from those in other countries, which is associated with national conditions, living environment, social status and physical differences.
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