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Correlation between port‐to‐target distance and procedural difficulty in single‐incision laparoscopic cholecystectomy: An observational study
Author(s) -
Ohira Masafumi,
Shibuya Kazuaki,
Uemura Kazuhito,
Takahashi Hiroaki,
Ito Yoshio
Publication year - 2019
Publication title -
asian journal of endoscopic surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.372
H-Index - 18
eISSN - 1758-5910
pISSN - 1758-5902
DOI - 10.1111/ases.12652
Subject(s) - medicine , observational study , laparoscopic cholecystectomy , cholecystectomy , port (circuit theory) , surgery , general surgery , correlation , geometry , electrical engineering , mathematics , engineering
Single‐incision laparoscopic cholecystectomy (SILC) is more challenging than conventional (multiport) laparoscopic cholecystectomy (CLC) because of the increased likelihood of instrument collision and the limited surgical workspace. In SILC, procedural difficulties may increase when the port‐to‐target distance is long. We aimed to assess the correlation between port‐to‐target distance and procedural difficulty. Methods Thirty‐six consecutive patients who underwent SILC at our hospital were included in this study. The umbilicus‐to‐Calot's triangle distance (UCD) was measured intraoperatively. The correlations between the UCD and operative time were analyzed, and for comparison, CLC cases during the same period ( n = 28) were similarly analyzed. Moreover, UCD was estimated from preoperative CT (UCD‐CT), and the usefulness of UCD‐CT was assessed during SILC and CLC. Results Thirty‐four patients successfully underwent SILC. There were positive correlations between the UCD and pneumoperitoneum time. Multivariate linear regression analysis, including BMI and height, which were previously reported to have a correlation with longer operative time in SILC, showed that UCD is an independent predictive factor for prolonged operative duration. However, BMI and height were not independent predictive factors. UCD and UCD‐CT had a very strong positive correlation; therefore, UCD was estimated from CT. UCD‐CT had a strong positive correlation with operative time in SILC, but not in CLC. Conclusions A longer UCD is an important predictive factor for difficult cases of SILC, but this finding is not applicable in CLC. The usefulness of UCD is specific to SILC.