Pathology gradual assessment of colorectal anastomosis
DOI:
https://doi.org/10.14739/2310-1237.2022.2.262454Keywords:
colorectal anastomosis, laparoscopic, anastomosis failure, reinforcing factors, assessmentAbstract
Aim: to analyze the state of the colorectal anastomosis after laparoscopic and open resection of the sigmoid and rectum in patients with colorectal cancer and to develop a unified grading of pathological changes in the anastomosis during its laparoscopic and videorectoscopic assessment.
Materials and methods. Results of the treatment of 79 patients who underwent resection of the rectum and sigmoid colon due to adenocarcinoma were analyzed. Patients were divided into two groups. The first group consisted of 34 (43.04 %) patients, whose treatment method was laparoscopic resection of the sigmoid and rectum (main group). The second group consisted of 45 (56.96 %) patients who underwent laparotomic resection. A stapler colorectal anastomosis was formed in both groups. The patients had II–III stages of the oncological disease without prior chemotherapy or radiotherapy in the anamnesis. During the operation visual assessment of the applied anastomosis was performed taking into account both external and internal characteristics. For external examination visual assessment of the anastomosed ends from the side of the serous membrane and a pneumohydrotest were used, for internal – an ordinary 10 mm laparoscope was inserted into the anus with CO2 insufflation at the level of 6 mm Hg and a visual assessment was carried out from the side of the mucosa. According to the received data, an original gradation of pathological changes in the colorectal anastomosis and recommendations for the prevention of its failure were developed.
Results. The developed technique for assessing and gradation of pathological changes in colorectal anastomosis made it possible to identify and eliminate suturing defects in 19 (24.05 %) patients, to eliminate stitching defects, control bleeding, identify ischemic zones of the anastomotic ends and improve total results of the treatment. One patient had anastomotic failure on the third day after operation. This case required reoperation with removal of the anastomosis and formation of the terminal colostomy. There were no lethal cases in both groups. Usage of additional methods for assessing the anastomosis is time-consuming and important in detecting pathological changes in the colorectal anastomosis.
Conclusions. The gradation of pathologic changes in the colorectal anastomosis should be comprehensive with an assessment of not only its external characteristics but also internal ones using videorectoscopy and allows to reduce the risks of colorectal anastomosis failure. The average number of points in the combination of laparoscopic and videorectoscopic evaluation is higher than in the laparoscopic one alone, but there is no statistical significance (U = 884.5; P = 0.071). This makes it possible to use the proposed grading system both in laparoscopy and in open surgery with the same results. There is no statistically significant difference in the number of detected anastomotic complications between open and laparoscopic resection of the sigmoid colon or the rectum (P = 0.137).
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