The hotspots and publication trends in postoperative delirium: A bibliometric analysis from 2000 to 2020

Abstract

BackgroundPostoperative delirium (POD) is a common aging-associated postoperative complication that has received increasing attention in the context of the aging global population and the number of articles published on POD is gradually increasing. This study aimed to quantify the basic information of scholarly publications on POD and identify the most impactful literature, trends, and hotspots in POD research.Materials and methodsWe searched articles on POD through the Science Citation Index Expanded databases published from 2000 to 2020. Bibliographic information, including year, country, authorship, type, journal, funding, affiliations, subject areas, and hotspots, was collected for further analysis.ResultsA total of 2,114 articles on POD from 2000 to 2020 were identified. The highest number of studies (n = 748) were published in the United States, comprising the most total citations (13,928), followed by China (n = 278), and Germany (n = 209). Inouye, Sharon K. was the most productive author, with 66 publications on POD. The Journal of the American Geriatrics Society published the highest number of articles (n = 80), with the most total citations (4,561) and average (57.01), followed by Anesthesia and Analgesia (n = 52), and the British Journal of Anaesthesia (n = 43). Harvard University was the most productive institute, with the highest H-index (n = 46) and highest degree centrality (n = 191). The top hotspots in the field of POD during this period were “elderly,” “cardiac surgery,” “cognitive impairment,” “hip fracture,” and “intensive care unit.”ConclusionThis study provides an overview of developments in the field of POD over the past 20 years using bibliometric analysis. Overall, research on POD has flourished worldwide. The United States (US) has a relatively high academic impact owing to its productive expertise and institutions in this field. Despite much research illustrating the diagnosis and management of POD in clinical practice, more basic research is needed.

Bibliometric Analysis of the Top-100 Cited Articles on Postoperative Delirium

“…The United States of America (USA) was the most productive country with 54 top-100 cited articles (Table 3). Germany ranked second ( 13), followed by Canada ( 9), the United Kingdom (UK) (7), China (7), Denmark ( 6), and the Netherlands (6) (Table 3). The top-10 institutions of publication counts are presented in Figure 3A.…”

“…A bibliometric analysis of POD was published last year, in which studies from 2000-2020 were included. 7 However, a number of novel articles emerged after 2020, including top studies published in JAMA, JAMA Surgery, and the British Journal of Anesthesiology. [8][9][10] These studies not only provide vital guidance on practice but also bring new hotspots in the POD field.…”

Development of an individualized model for predicting postoperative delirium in elderly patients with hepatocellular carcinoma

“…Postoperative delirium (POD) is a prevalent and serious complication marked by acute and varying alterations in mental condition, attentional capabilities, and consciousness levels following liver resection [6][7][8] . Studies have shown a correlation between POD and unfavorable consequences, including heightened mortality rates, extended hospital stays, and elevated medical costs.…”

Bibliometric Analysis of the Top-100 Cited Articles on Postoperative Delirium

“…Until now, there have been abundant original investigations and secondary studies focusing on the mechanisms, risk factors, prediction, prevention, and treatment of POD. A bibliometric analysis of POD was published last year, in which studies from 2000-2020 were included [7] . However, a number of novel articles emerged after 2020, including top studies published in JAMA, JAMA Surgery, and the British Journal of Anesthesiology [8][9][10] .…”