چکیده (انگلیسی):

Background and aims: The aim of this study was to investigate the clinical usefulness of the placement of
a transanal drainage tube to prevent anastomotic leakage in colorectal anastomoses.
Material and methods: This single-center retrospective trial included all patients treated with surgery for
benign or malign colorectal disease between January 2009 and December 2012. The transanal drainage
tube was immediately placed after colorectal anastomosis until day five and was routinely used since
2010. Patients treated with a transanal drainage tube were compared with the control group. Statistical
analysis was performed using Fisher's exact or Chi-square tests for group comparison and a linear
regression model for multivariate analysis.
Results: This study included 242 patients (46% female; median age 63 years; range 18e93); 34% of the
patients underwent a laparoscopic procedure, and 57% of the patients received a placement of a
transanal drainage tube. Anastomotic leakage occurred in 19 patients (7.9%). Univariate analysis showed a
higher rate of anastomotic leakage in patients with an ASA score 4 (p ¼ 0.02) and a lower rate in patients
with transanal drainage placement (3.6% vs. 13.6%; p ¼ 0.007). The grading of the complication of
anastomotic leakage was reduced with transanal drainage (e.g., Dindo S 3b: 20.0% vs. 92.9%; p ¼ 0.006),
and the hospital stay was shortened (17.6 ± 12.5 vs. 22.1 ± 17.6 days; p ¼ 0.02). Multivariate analysis
revealed that transanal drainage was the only significant factor (HR ¼ 2.90; 0.168 to 0.032;
p ¼ 0.007) affecting anastomotic leakage.
Conclusions: Placement of a transanal drainage tube in patients with colorectal anastomoses is a safe and
simple technique to perform and reduces anastomotic leakage, the severity of the complication and
hospital stay.
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