Association between intraoperative application of microfibrillar collagen hemostat and anastomotic leakage after anterior resection for rectal cancer: A retrospective case-control study

Published:November 04, 2020DOI:



      The purpose of the study was to evaluate the association between microfibrillar collagen hemostat and anastomotic leakage after anterior resection.


      Between March 2015 and December 2019, a total of 203 consecutive rectal cancer patients who underwent elective anterior resection were included. Patient parameters were analyzed. The relevant risk factors were identified by univariate and multivariate analysis. Propensity score matching was performed to reduce the selection bias.


      In total, 26 (12.8%) of the 203 study patients developed clinical anastomotic leakage. The length of hospital stay was significantly prolonged by anastomotic leakage. In univariate analysis and multivariate analysis, male sex, low tumor location, and intraoperative application of microfibrillar collagen hemostat significantly increased the risk of anastomotic leakage. Furthermore, analysis after propensity score matching confirmed the independent role of microfibrillar collagen hemostat in anastomotic leakage. In addition, the median time of anastomotic leakage occurrence from the initial operation in patients with microfibrillar collagen hemostat was 9.00 days, which was significantly later than that in patients without microfibrillar collagen hemostat.


      In addition to male sex and low tumor location, intraoperative application of microfibrillar collagen hemostat was demonstrated to be a significant risk factor for anastomotic leakage. This finding suggested that surgeons should be fully aware of this potential risk in anterior resection. Because of the limitation of retrospective study, however, randomized controlled trials are needed to confirm this association in the future.
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