K-Wire Retractor, a Trocar-Free Liver Retraction Technique in Bariatric Surgery.
2020
Background Liver retractor helps in the provision of an adequate operative field in bariatric surgery. Though several retractors have been introduced, an optimal retraction method is yet to be desired. We have developed a K-wire retractor, a simple trocar-free liver retractor used in our bariatric surgery. The efficacy and safety of the K-wire retractor were examined. Methods A retrospective review was performed on patients undergoing laparoscopic bariatric surgery from January 2016 to April 2019. Based on the application of liver retractors during surgery, patients were divided into the K-wire retractor group and the suture-based retractor group for comparative analyses. Patients with severe liver injury or missing data, or treated with other types of retractors were excluded. Results A total of 317 patients were included in our study and there was no conversion to open surgery. There were no significant differences in patient demographics (age, gender, BMI) and types of bariatric surgery between the two groups. The time taken for placement of retractor was significantly shorter in the K-wire retractor group, in addition to higher operative view score and lesser ALT/AST elevation compared with the suture-based retractor group. Although the K-wire retractor group was less inclined to require additional retraction techniques, patients with BMI ≥ 50 Kg/m2 were associated with higher risk (OR:3.8; 95% CI: 1.2, 12.8) of requiring additional retractors. There were no severe K-wire retractor-related complications observed. Conclusion The trocar-free K-wire liver retractor is safe, simple, and effective as a standard liver retraction method in bariatric surgery.
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