Objective To explore the research hotpots and development trend of midline catheter（MC）. Methods The Chinese literature on midline catheter collected in CNKI and Wanfang,the English literature collected in Web of Science from 2011 to 2020 was received,and a bibliometrics tool Citespace 5.7R2 was used for literature analysis. Results A total of 154 articles in Chinese and 79 articles in English related to MC were retrieved. In 2017,the number of articles published in English decreased slightly,and the number of English articles published the same as Chinese articles in 2018,and then they have been continuing to grow. Through the co-occurrence analysis of key words,it was found that the research hotpots focused on complications,intensive care unit（ICU）,children,indwelling time and so on. Through cluster analysis,there were six significant clusters in Chinese literature（intravenous treatment/thrombosis/catheterization technology/nursing/midline catheter/cost）; six significant clus-ters were formed in English literature（ultrasonography/midline catheter/health care-associated infection/catheter-based interventions/central venous catheterisation/catheter-associated complications）. Conclusion Scholars have paid increasing attention to midline catheter nowadays,focusing on catheterization technology of midline catheter and incidence rate of complications,ect. However,due to the lack of research,the research theme and research variable setting relatively were simple. In the future,more studies can be carried out on nursing technology of midline catheter.
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