437P - Correlation between bio-impedance analysis and abdominal CT scan to diagnose decreased muscle mass in adult cancer patients

Abstract

BackgroundSarcopenia, characterized by a decline of skeletal muscle plus low muscle strength and/or physical performance, has emerged to be an important prognostic factor for advanced cancer patients. Sarcopenia is diagnosed if there is decreased muscle mass and either decreased muscle function or physical activity. The diagnostic tools for evaluating muscle mass in cancer patients was using muscle index derived from abdominal CT scan. However, the practicability of using CT scan for screening decreased muscle mass has been questioned. Until know there is limited data diagnostic value of Bio-impedance analysis (BIA) in cancer patients. The aim of this study is to know the correlation between BIA and abdominal CT scan to diagnose decreased muscle mass in cancer patients. MethodsThis cross-sectional study included adult cancer patients who underwent abdominal CT scans in purpose for diagnostic. BIA was performed in the same day when CT-scan was performed. CT-scans was analyzed using special software. BIA was performed using standing-posture 2-electrode BIA device BC-418 (BIA, Tanita Corp, Tokyo, Japan). Height adjusted appendicular skeletal muscle mass (ASM) was calculated from BIA. Height adjusted skeletal muscle Index (SMI) was performed from a single cross-sectional CT image (slice) at third lumbar (L3) for abdominal skeletal muscle area. We calculated Pearson’s r correlation coefficient between two parameters. ResultsA total of 39 patients were included. Twenty-eight (71.8%) patients were female. The mean of age was 51.18 +13.83 years old. Several type of cancer such as breast, lung, gastrointestinal and genitourinary cancer were included. Eleven (28.2%) patients were in advanced stage. Mean of height adjusted BIA was 6.60 + 0.98 kg/m2. Mean of height adjusted muscle mass was 42.25 + 7.57 cm2/m2. BIA and CT-derived muscle were moderately correlated (r = 0.72, p < 0.001). ConclusionsThis study showed that BIA- and CT-derived muscle mass was moderately correlated in adult cancer patients. Further research is needed to confirm this result. Legal entity responsible for the studyThe authors. FundingHas not received any funding. DisclosureAll authors have declared no conflicts of interest.