ObjectiveTo evaluate the value of modified traction method (dual-band composite suspension traction method) in laparoscopic radical resection for low rectal cancer. MethodsProspectively selected patients who underwent laparoscopic radical resection for low rectal cancer from March 2022 to March 2023 were selected as study subjects. They were randomly divided into a control group and an observation group using a random number table method. The observation group underwent the modified traction method for surgical field exposure, while the control group received the haemostatic clamp traction method. Both groups were followed up for 3 months postoperatively. The observation indexes were compared between the two groups: the surgeon’s satisfaction with the surgical field exposure, surgery-related indicators (operation time, intraoperative blood loss, positive rate of rectal air insufflation test), recovery of gastrointestinal function (time to bowel sound recovery, time to first oral intake), postoperative hospital stay, and the complications rate during the follow-up period. Results According to the inclusion and exclusion criteria, 120 patients underwent laparoscopic radical resection for low rectal cancer were included, with 60 patients in each group. The satisfaction score regarding the intraoperative field exposure in the observation group was significantly higher than that in the control group [(8.42±0.96) points vs. (7.23±1.09) points, t=6.346, P<0.000], and the operation time was significantly shorter in the observation group [(166.20±19.06) min vs. (180.28±22.87) min, t=3.662, P<0.001]. No statistically significant differences were observed between the two groups in terms of intraoperative blood loss, postoperative gastrointestinal function recovery time, hospital stay, or complications rate (P>0.05). Conclusion The application of the dual-band composite suspension traction method in laparoscopic radical resection for low rectal cancer helps to improve surgical field exposure, facilitates the surgeon’s operation, thereby shortening the operation time, without increasing postoperative risks, demonstrating good safety.
Objective To investigate the change of vasa vasorum in vessel wall of varicose vein of the lower extre-mity. Methods Thirty-two patients with varicose vein of the lower extremity were collected， in which of 12 patients with simple varicose veins （varicose group）， 9 patients with recurrent varicose veins （recurrent group）， 11 patients withthrombophlebitis of varicose vein （thrombophlebitis group）， 9 patients with normal venous tissue as control group. HE staining was performed to observe the distribution of vasa vasorum and detect the vasa vasorum density. Results The increasing vasa vasorums were observed in the adventitia and media， but few was observed in the intima in the varicose， recurrent， and thrombophlebitis groups. The distribution of vasa vasorum was in the adventitia in the control group. The vasa vasorum densities （/mm2） in the varicose， recurrent， and thrombophlebitis groups （5.65±1.45，6.20±1.73， and 5.94±1.63， respectively） were greater than those in the control group （2.87±0.54）， the difference wasstatistically significant （P＜0.05）， but there was no significant difference of the vasa vasorum density among the varicosevein， recurrent， and thrombophlebitis groups （P＞0.05）. Conclusion Change of vasa vasorum is an important pathol-gical change with the nosogenis of varicose vein of the lower extremity.