Measuring body composition in hemodialysis patients: before or after hemodialysis?

Body composition and clinical outcomes such as mortality and quality of life are strongly correlated in patients with chronic kidney disease. Since body weight and body mass index do not reflect body composition, measuring body composition is essential. In hemodialysis patients, there is an equipoise about the best moment to measure body composition; before or after hemodialysis. Our aim was to explore the agreement between bio-impedance spectroscopy (BIS) derived body composition indices before and after hemodialysis. We performed BIS measurements in a cohort of hemodialysis patients. Patients were divided into group 1: measurements before and 0.810, P