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Optical trocar access for initial trocar placement in laparoscopic gastrointestinal surgery: A propensity score-matching analysis.

INTRODUCTION: Optical trocar access is a technique to place the initial trocar in laparoscopic surgery. With optical trocar access, each tissue layer can be visualized before insertion, which can help prevent organ injury, and air leaks at the trocar site can be minimized even in obese patients. The aim of this study was to compare the time needed for trocar insertion using optical trocar access and an open method in patients who underwent laparoscopic gastrointestinal surgery.

METHODS: We reviewed our prospectively collected database and identified 384 patients who underwent laparoscopic gastrointestinal surgery involving initial trocar insertion near the umbilicus by either the optical trocar access or the open method. Before the two methods were compared, propensity score matching was used to adjust for essential variables between the optical trocar access and open groups.

RESULTS: Patients categorized in the optical trocar access and open groups were matched one-to-one by propensity score matching, and 137 pairs of patients were generated. The time needed for trocar insertion was significantly shorter in the optical trocar access group than in the open group (36.6 vs 209.8 s, P < 0.01). The multivariable analysis identified an inexperienced surgeon as the only independent risk factor for prolonged time for initial trocar insertion using the optical trocar access.

CONCLUSIONS: This study indicated that optical trocar access may be recommended for inserting the initial trocar in laparoscopic gastrointestinal surgery.

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