O076 - USEFULNESS OF BIOELECTRICAL IMPEDANCE ANALYSIS (BIA) IN THE NUTRITIONAL ASSESSMENT OF PATIENTS WITH HEART FAILURE

O076

USEFULNESS OF BIOELECTRICAL IMPEDANCE ANALYSIS (BIA) IN THE NUTRITIONAL ASSESSMENT OF PATIENTS WITH HEART FAILURE

M. García Olivares^1,*, F. J. Sánchez Torralvo¹, C. Moreno-Torres Taboada¹, S. Castillo², J. M. Pérez Ruiz², A. Pérez Espejo³, G. Olveira Fuster¹

¹ENDOCRINOLOGY AND NUTRITION, ²CARDIOLOGY, HOSPITAL REGIONAL UNIVERSITARIO DE MALAGA, ³Universidad de Málaga, MALAGA, Spain

Rationale: Heart failure (HF) is a clinical syndrome characterized by fatigue, dyspnea, and fluid retention. Malnutrition and low muscle mass in HF patients are linked to worse outcomes, highlighting the need for accurate nutritional assessment. This study aimed to evaluate the relationship between single-frequency bioelectrical impedance analysis (BIA) parameters and clinical status in HF patients.

Methods: Prospective observational study in outpatients from the HF unit of HRUM. Nutritional evaluation included BIA and clinical data collection. Decompensated HF was defined as NT-proBNP > 1800 pg/ml.

Results: 89 patients (71.9% men), 48.3% in stage B and 51.7% in stage C. Dyspnea: 35.6% grade 1, 42.5% grade 2, 18.4% grade 3, 3.4% grade 4. Mean NT-proBNP was 3532 ± 6410 pg/ml; 41.8% had elevated values.

Mean fat-free mass index (FFMI): 20.1±2.86 kg/m² (men), 18±2.25 kg/m² (women); 12.4% below ESPEN thresholds. Appendicular skeletal muscle mass (ASMM): 22.1±4.37 kg (men), 16.7±3.82 kg (women), with 46.1% below reference. Phase angle (PA): 4.60±1.16° (men), 4.67±1.03° (women), no sex differences. Extracellular water (ECW): 23.8±5.2 kg (men), 18±2.71 kg (women); mean hydration 76.4±4.54%.

Patients with high NT-proBNP had lower PA (4.32±1.05 vs 4.89±1.16, p=0.03), higher hydration (77.7±5.7 vs 75.3±3.48, p=0.03), and more ECW (23.8±6.23 vs 21±4.7, p=0.02). ROC curve identified PA cut-off of 4.8° for decompensation (AUC 0.64; sensitivity 54.4%, specificity 72.7%).

Conclusion: BIA is a useful tool for morphofunctional assessment in HF. Phase angle and hydration parameters may help predict clinical status in these patients.

Disclosure of Interest: None declared