Abstract
Background
Although functional end-to-end anastomosis (FEEA) using a stapler in the colorectal field has been recognised worldwide, the technique varies by surgeon, and the safety of anastomosis using different techniques is unknown.
Methods
This multicentre prospective observational cohort study was conducted by the KYCC Study Group in Yokohama, Japan, and included patients who underwent colonic resection at seven centres between April 2020 and March 2022. This study compared the incidence of surgery-related abdominal complications (SAC: anastomotic leakage [AL], anastomotic bleeding, intra-abdominal abscess, enteritis, ileus, surgical site infection, and other abdominal complications) between two different methods of FEEA (one-step [OS] method: simultaneous anastomosis and bowel resection; two-step [TS] method: anastomosis after bowel resection). Complications of Clavien–Dindo classification grade 2 or higher were assessed.
Results
Among 293 eligible cases, the OS and TS methods were used in 194 (66.2%) and 99 (33.8%) patients, respectively. The baseline characteristics were similar between the groups. The OS method used fewer staplers (three vs. four staplers, p < 0.00001). There were no significant differences in SAC rate between the OS (19.1%) and the TS (16.2%) groups (p = 0.44). The OS group had four cases (2.1%) of AL (two patients; grade 3, two patients; grade 2) while the TS group had one case (1.0%) of grade 2 AL (p = 0.67). Multivariate logistic regression analysis showed that male sex (odds ratio [OR] 3.95; p < 0.00001), an open surgical approach (OR 2.36; p = 0.03), and longer operative duration (OR,2.79; p = 0.002) were independent predictors of complications, whereas the OS method was not an independent predictor (OR 1.17; p = 0.66).
Conclusions
The OS and the TS technique for stapled colonic anastomosis in a FEEA had a similar postoperative complication rate.
Trial registration number
UMIN000039902 (registration date 23 March 2020).
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Data availability
Due to the nature of this research, participants of this study did not agree for their data to be shared publicly, so supporting data is not available.
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Acknowledgements
The authors would like to express their heartfelt gratitude to Maho Sato who generous cooperation in this clinical trial. In addition, we would like to thank Editage (www.editage.com) for English language editing.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Sumito Sato and Kenta Iguchi. The first draft of the manuscript was written by Kenta Iguchi and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This study was approved by the institutional review board of Kanagawa Cancer Center (Number 2019-156) and each participating hospital.
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This investigation was conducted according to the Declaration of Helsinki and all participants provided written informed consent before enrollment.
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Informed consent was obtained from all individual participants included in the study.
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Iguchi, K., Sato, S., Shiozawa, M. et al. Usefulness of the one-step technique in functional end-to-end anastomosis for colonic surgery: results of a prospective multicentre cohort study from the Japanese KYCC group. Tech Coloproctol 28, 82 (2024). https://doi.org/10.1007/s10151-024-02958-8
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DOI: https://doi.org/10.1007/s10151-024-02958-8