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World J Surg ; 45(7): 2227-2234, 2021 07.
Article in English | MEDLINE | ID: mdl-33742231

ABSTRACT

BACKGROUND: Various reports have now established that postoperative endoscopy to examine and intervene in the process of anastomotic healing is both feasible and safe. Here we present our preliminary experience with serial postoperative endoscopy to determine its feasibility, patient acceptance and the ability to obtain and the utility of perianastomotic material for molecular analysis. METHODS: Patients undergoing LAR with ileostomy for rectal cancer were recruited for study to undergo routine serial endoscopic surveillance (SES) at three time points during the course of LAR: intraoperatively, before discharge (postoperative day 3-7) and at follow-up (postoperative day 10-28). At each endoscopy, images were captured, anastomotic tissues were lavaged and lavage fluid was retrieved. Fluid samples were analyzed using proteomics, zymography, ELISA and bacteria via 16S rRNA gene amplicon sequencing and culture of collagenolytic strains. RESULTS: SES is feasible and acceptable to this limited set of patients following LAR. Biologic analysis of perianastomotic fluids was able to detect the presence of proteins, microbiota and inflammatory mediators previously identified at anastomotic sites in animals with pathologic healing. CONCLUSION: SES can be implemented in patients undergoing LAR with a high degree of patient compliance and capture of biologic information and imaging. Application of this approach has the potential to uncover, for the first time, the natural history of normal versus pathologic anastomotic healing in patients undergoing anastomotic surgery.


Subject(s)
Anastomotic Leak , Rectal Neoplasms , Anastomosis, Surgical/adverse effects , Anastomotic Leak/diagnosis , Animals , Biomarkers , Endoscopy , Humans , RNA, Ribosomal, 16S , Rectal Neoplasms/surgery , Retrospective Studies , Therapeutic Irrigation
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