4.6 Article

Impact of aspirin discontinuation on thrombotic complications in laparoscopic colorectal cancer surgery

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SPRINGER
DOI: 10.1007/s00464-021-08991-0

Keywords

Clinical-malignant; Thromboembolism; Aspirin; Colorectal surgery; Colonic diseases

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Discontinuation of aspirin in laparoscopic colorectal cancer surgery increases the risk of severe thrombotic complications. Although bleeding complications significantly increased in the group continuing aspirin, thrombotic complications were significantly more frequent in the group discontinuing aspirin.
Background The number of patients taking antiplatelet therapy is increasing. However, there is no definitive guideline for the perioperative management of antiplatelet therapy. Conventionally, the discontinuation of antiplatelet drugs has been the basic treatment as perioperative management. Therefore, we investigated the risk of discontinuing aspirin concerning thrombotic complications in laparoscopic colorectal cancer surgery. Methods Between January 2015 and December 2019, a total of 729 patients underwent laparoscopic colorectal cancer surgery in Toyonaka Municipal Hospital. Sixty-four patients taking antithrombotic drugs aside from aspirin were excluded from this study; the remaining 665 patients were considered eligible and divided into three groups. The patients not taking aspirin were classified as the Control group (n = 588). Among the patients taking aspirin, those who continued preoperative aspirin were classified as the Aspirin group (n = 30), and those who discontinued preoperative aspirin were classified as the No-aspirin group (n = 47). The Aspirin, No-aspirin, and Control groups were compared retrospectively. Result Among the 3 groups, there were no significant difference in operative time (p = 0.14), bleeding volume (p = 0.63), or postoperative hospital stay (p = 0.06). Assessing the postoperative complication, bleeding complications were significantly more frequent in the Aspirin group (p < 0.01), although those complications were all Clavien-Dindo grade II. In contrast, thrombotic complications were significantly more frequent in the No-aspirin group (p < 0.01). Note that those complications were all Clavien-Dindo Grade III/IV. This result suggested that discontinuing aspirin increased the risk of severe thrombotic complication. Conclusion Discontinuation of aspirin as perioperative management in laparoscopic colorectal cancer surgery increased the risk of severe thrombotic complications.

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