James Tankel1,2, Shlomo Yellinek3, Elena Vainberg4, Yotam David3, Dmitry Greenman3,5, James Kinross6, Petachia Reissman3. 1. Department of General Surgery, Shaare Zedek Medical Center, The Hebrew University School of Medicine, 12 Shmeul Bait Street, 9103102, Jerusalem, Israel. jamietankel@gmail.com. 2. Department of Surgery and Cancer, Imperial College Healthcare Trust, St Mary's Hospital, Praed Street, London, W2 1NY, UK. jamietankel@gmail.com. 3. Department of General Surgery, Shaare Zedek Medical Center, The Hebrew University School of Medicine, 12 Shmeul Bait Street, 9103102, Jerusalem, Israel. 4. Department of Radiology, Shaare Zedek Medical Center, The Hebrew University School of Medicine, 12 Shmeul Bait Street, 9103102, Jerusalem, Israel. 5. Department of Anesthesiology, Perioperative Medicine and Pain Treatment, Shaare Zedek Medical Center, The Hebrew Univeristy School of Medicine, 12 Shmeul Bait Street, 9103102, Jerusalem, Israel. 6. Department of Surgery and Cancer, Imperial College Healthcare Trust, St Mary's Hospital, Praed Street, London, W2 1NY, UK.
Abstract
PURPOSE: While sarcopenia has prognostic value in elective colorectal surgery for predicting peri-operative morbidity and mortality, its role in elective laparoscopic surgery is poorly defined. METHODS: A retrospective single-center analysis of patients undergoing elective laparoscopic right hemicolectomy for adenocarcinoma between January 2010 and December 2016. Univariate analysis compared the robustness of total psoas index (TPI) with Hounsfield unit average calculation (HUAC) calculated from pre-operative CT imaging in predicting post-operative complications. Multivariate analysis compared these measures with American Society of Anesthesiologists (ASA) grade and Charlson scores in predicting post-operative complications. RESULTS: Of the 580 patients identified, 185 met the inclusion criteria (91 males and 94 females, with a median age of 68). Using TPI and HUAC, 46 and 44 patients respectively were identified as sarcopenic, including 18 patients that were identified by both measures. HUAC-defined sarcopenia was significantly associated with pre-operative comorbidities, peri-operative mortality, and a greater incidence of respiratory, cardiac, and serious post-operative complications (Clavien-Dindo ≥ 3). Those with HUAC-defined sarcopenia aged > 75 were at particular risk of morbidity (OR 5.52, p = 0.002). No such relationships were found with TPI-defined sarcopenia. Only HUAC remained predictive of post-operative complications on multivariate analysis. CONCLUSION: Sarcopenia is a novel methodology for stratifying surgical risk in elective colorectal cancer surgery. HUAC has a high prognostic accuracy for the prediction of complications following laparoscopic colorectal surgery compared with TPI, ASA grade, and Charlson score.
PURPOSE: While sarcopenia has prognostic value in elective colorectal surgery for predicting peri-operative morbidity and mortality, its role in elective laparoscopic surgery is poorly defined. METHODS: A retrospective single-center analysis of patients undergoing elective laparoscopic right hemicolectomy for adenocarcinoma between January 2010 and December 2016. Univariate analysis compared the robustness of total psoas index (TPI) with Hounsfield unit average calculation (HUAC) calculated from pre-operative CT imaging in predicting post-operative complications. Multivariate analysis compared these measures with American Society of Anesthesiologists (ASA) grade and Charlson scores in predicting post-operative complications. RESULTS: Of the 580 patients identified, 185 met the inclusion criteria (91 males and 94 females, with a median age of 68). Using TPI and HUAC, 46 and 44 patients respectively were identified as sarcopenic, including 18 patients that were identified by both measures. HUAC-defined sarcopenia was significantly associated with pre-operative comorbidities, peri-operative mortality, and a greater incidence of respiratory, cardiac, and serious post-operative complications (Clavien-Dindo ≥ 3). Those with HUAC-defined sarcopenia aged > 75 were at particular risk of morbidity (OR 5.52, p = 0.002). No such relationships were found with TPI-defined sarcopenia. Only HUAC remained predictive of post-operative complications on multivariate analysis. CONCLUSION:Sarcopenia is a novel methodology for stratifying surgical risk in elective colorectal cancer surgery. HUAC has a high prognostic accuracy for the prediction of complications following laparoscopic colorectal surgery compared with TPI, ASA grade, and Charlson score.
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