ArticleFrontiers in microbiology2026
Correlation of preoperative gut microbiota and postoperative delirium in patients undergoing minimally invasive direct coronary artery bypass grafting.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Postoperative delirium (POD) is a common complication after cardiac surgery, but the role of preoperative gut microbiota, especially the mycobiome, in POD susceptibility remains unclear. This study investigated the association between preoperative gut bacterome and mycobiome profiles and POD in elderly patients undergoing minimally invasive direct coronary artery bypass grafting (MIDCABG). Methods: Preoperative fecal samples from 31 elderly patients scheduled for MIDCABG were analyzed via 16S rRNA and ITS high-throughput sequencing. POD was assessed twice daily using the 3D-CAM scale. Patients were divided into delirium (M, Results: POD incidence was 22.58%. No baseline differences were observed between groups. Group M exhibited significantly lower gut microbiome health index and higher microbial dysbiosis index at both bacterome and mycobiome levels. Alpha/beta diversity did not differ significantly. LEfSe revealed bacterial enrichment of Conclusion: Preoperative dysbiosis of gut bacterome and mycobiome is associated with POD in elderly MIDCABG patients. Several bacterial and fungal taxa, including
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