Abstract
Background and Aims: To evaluate endoscopic sedation research and predict research hot spots both quantitatively and qualitatively using bibliometric analysis.Methods: We extracted relevant publications from the Web of Science Core Collection (WoSCC) on 13 December 2020. We examined the retrieved data by bibliometric analysis (e.g., co-cited and cluster analysis, keyword co-occurrence) using the software CiteSpace and VOSviewer and the website of bibliometrics, the Online Analysis Platform of Literature Metrology (http://bibliometric.com/), to analyse and predict the trends and hot spots in this field.Main Results: We identified 2,879 articles and reviews on endoscopic sedation published between 2001 and 2020. Although the overall trend is increasing, with slight fluctuation in some years, there were significant increases in 2007 and 2012. In respect of the contributions on endoscopic sedation research, the United States (US) had the greatest number of publications, and it was followed by Japan and China. In addition, collaboration network analysis revealed that the most frequent collaboration was between the US and China. Six of the top ten most prolific research institutions were located in the US. The most publications on endoscopic sedation research in the past two decades were found primarily in journals on gastroenterology and hepatology. Keyword co-occurrence and co-citation cluster analysis revealed the most popular terms relating to endoscopic sedation in the manner of cluster labels; these included patient anxiety, tolerance, ketamine, propofol, hypoxia, nursing shortage, endoscopic ultrasonography, colorectal cancer, carbon dioxide insufflation, and water exchange (WE). Keyword burst detection suggested that propofol sedation, adverse event, adenoma detection rate (ADR), hypoxemia, and obesity were newly-emergent research hot spots.Conclusions: Our findings showed that hypoxia, adverse event, and ADR, along with conscious sedation and propofol sedation, have been foci of endoscopic sedation research over the past 20 years. The research focus has shifted from sedative drugs to sedative complications and endoscopy quality control, which means that there will be higher requirements and standards for sedative quality and endoscopy quality in the future.
Highlights
Gastrointestinal endoscopy is the gold standard for early detection of gastric cancer and colorectal cancer
We extracted the bibliographic data from the Web of Science Core Collection (WosCC) database (Clarivate Analytics, Philadelphia, PA, USA), one of the most comprehensive and authoritative databases for literature searches, using a query based on the major topics that contain the pre-defined terms in the title, abstract and keywords of the relevant manuscripts
The overall trend is increasing, with slight fluctuation in certain years, it is interesting to note that the amount of annual publications can be divided into three stages: stage one, from 2001 to 2006, when the average number of publications per year was between 60 and 80; stage two, from 2007 to 2011, when the average number of publications per year was between 100 and 120; and stage three, from 2012 to 2020, when there was a prominent uptick in the number of publications, rising to more than 60 for most of this period
Summary
Gastrointestinal endoscopy is the gold standard for early detection of gastric cancer and colorectal cancer. In the United States (US), the colorectal cancer mortality rate is by more than 50% lower than what it was two decades ago, when doctors began to systematically employ colonoscopy as a screening tool rather than as a diagnostic tool [1]. A large number of gastrointestinal endoscopies are performed. Statistical analysis of the data for China in 2016 revealed that 26 million gastrointestinal endoscopies were carried out in the country [2]. According to 2015 data, approximately 20 million gastrointestinal endoscopies are performed in the US on an annual basis [3]. In France, more than one million esophagogastroduodenoscopies (EGDs) are performed each year [4]. To evaluate endoscopic sedation research and predict research hot spots both quantitatively and qualitatively using bibliometric analysis
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