IntroductionMalnutrition is common in hemodialysis patients due to specific features of chronic kidney disease such as insufficient filtration capacity and accelerated protein breakdown. Deteriorated nutritional status threatens chronic dialysis patients with reduced mobility and poor outcomes, including increased mortality (Carrero et al., 2013; Locatelli et al., 2002; Vannini, Antunes, Caramori, Martin, & Barretti, 2009). Thus, several indicators of malnutrition in hemodialysis patients have been proposed such as SGA, GNRI and albumin level. However, the detection rate of each indicator seems to differ (Pifer et al., 2002) and taking into account the particular characteristics of hemodialysis patients is necessary for practical application. Therefore, the use of a sensitive identification assessment method and early intervention on malnourished patients is quite meaningful. Malnutrition and mortality in hemodialysis patients. The characteristics of hemodialysis patients are described as having greater survival when they had a higher serum creatinine concentration or a higher BMI, meaning a larger body. greater size or muscle mass. An increase in dry weight accompanied by a gain in muscle mass is correlated with better survival. In contrast, weight loss accompanied by loss of muscle mass results in the worst mortality. Additionally, muscle mass gain associated with weight loss was favored by higher survival compared to muscle mass loss associated with weight gain (Kalantar-Zadeh et al., 2010). Mortality risk is strongly associated with low BMI in maintenance hemodialysis patients (Kovesdy & Kalantar-Zadeh, 2009). Mortality risk is analyzed using the mSGA (modified Subjective Global Assessment) score which contains recent weight loss, visual soma...... middle of paper ...... these are the main components of the impedance of a biological tissue. BIA measures impedance or resistance using a small electrical current passing through the body. Body composition is estimated using the difference in electrical current conductivity between extracellular fluid and body tissues, because impedance is higher in adipose tissue, which contains less tissue fluid than lean mass. The reliability and validity of BIA tests for estimating lean mass and total body fat in hemodialysis patients are proven by several studies (Chertow et al., 1995, Frstenberg & Davenport, 2011). However, this method is not available to individuals who have had a medical device such as a pacemaker or automatic impedance defibrillator implanted, as these medical equipment may have interfered with BIA testing due to the the use of an electric current through the body..