Abstract 16800: Sarcopenia in Advanced Systolic Heart Failure Patients Receiving Left Ventricular Assist Devices

Abstract

Introduction: Sarcopenia is the age-related deterioration in skeletal muscle mass and function, which can be accelerated by chronic comorbidities. The prevalence in advanced systolic heart failure (HF) and impact on HF health status are currently uncertain. Sarcopenia diagnostic criteria from the Foundation for the National Institutes of Health (FNIH) and European Working Group on Sarcopenia in Older People (EWGSOP) have not been applied to HF cohorts. Hypothesis: We hypothesized that at the time of left ventricular assist device (LVAD) implantation systolic HF patients have prevalent sarcopenia, and that sarcopenia is associated with poorer nutritional and HF health status. Methods: We recruited 18 adults with systolic HF ±21 days from LVAD implantation. All underwent whole-body dual X-ray absorptiometry (DXA) to calculate appendicular lean mass (ALM). Subjects also underwent a 3-day food recall, Simplified Nutritional Appetite Questionnaire (SNAQ), Kansas City Cardiomyopathy Questionnaire (KCCQ) for HF health status, handgrip strength and blood testing. Sarcopenia was defined by 2 ALM criteria: FNIH – males <19.75kg, females <15.02kg; EWGSOP – males <7.26kg/m 2 , females <5.5kg/m 2 . Linear regression determined relationships between appendicular lean mass and age, weight, handgrip strength, KCCQ summary score, SNAQ score, 24-hour protein intake, and key blood variables, without/with adjustment for sex and height. Results: Sarcopenia was diagnosed in 5 subjects (28%) by FNIH criteria and an additional 5 (10 total, 56%) by EWGSOP criteria (Figure). There were unadjusted associations between lower appendicular lean mass and lower handgrip strength; higher SNAQ score (higher malnutrition risk); lower sodium; and lower hemoglobin. After adjustment for sex and height, lower lean mass remained associated with lower hemoglobin. Lower appendicular lean mass was also independently associated with higher (more favorable) KCCQ scores. Conclusions: As many as half of advanced systolic HF patients meet standard DXA criteria for sarcopenia. Lower appendicular lean mass is independently associated with lower hemoglobin but does not appear to be associated with poorer HF status.