• Br J Surg · Apr 2020

    Risk factors for conversion in laparoscopic and robotic rectal cancer surgery.

    • J Crippa, F Grass, P Achilli, K L Mathis, S R Kelley, A Merchea, D T Colibaseanu, and D W Larson.
    • Division of Colon and Rectal Surgery, Mayo Clinic, Rochester, Minnesota, USA.
    • Br J Surg. 2020 Apr 1; 107 (5): 560-566.

    BackgroundThe aim of this study was to review risk factors for conversion in a cohort of patients with rectal cancer undergoing minimally invasive abdominal surgery.MethodsA retrospective analysis was performed of consecutive patients operated on from February 2005 to April 2018. Adult patients undergoing low anterior resection or abdominoperineal resection for primary rectal adenocarcinoma by a minimally invasive approach were included. Exclusion criteria were lack of research authorization, stage IV or recurrent rectal cancer, and emergency surgery. Risk factors for conversion were investigated using logistic regression. A subgroup analysis of obese patients (BMI 30 kg/m2 or more) was performed.ResultsA total of 600 patients were included in the analysis. The overall conversion rate was 9·2 per cent. Multivariable analysis showed a 72 per cent lower risk of conversion when patients had robotic surgery (odds ratio (OR) 0·28, 95 per cent c.i. 0·15 to 0·52). Obese patients experienced a threefold higher risk of conversion compared with non-obese patients (47 versus 24·4 per cent respectively; P < 0·001). Robotic surgery was associated with a reduced risk of conversion in obese patients (OR 0·22, 0·07 to 0·71).ConclusionRobotic surgery was associated with a lower risk of conversion in patients undergoing minimally invasive rectal cancer surgery, in both obese and non-obese patients.© 2020 BJS Society Ltd Published by John Wiley & Sons Ltd.

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