5,6 Bioimpedance can be useful in guiding fluid management with a favorable impact in cardiovascular parameters. 4 The hydration status, evaluated by bioimpedance spectroscopy, is an important and independent predictor of mortality in chronic hemodialysis patients. Multifrequency bioimpedance spectroscopy is a validated technique that objectively defines the individual overhydration status, taking into account the individual's body composition. 3 New noninvasive bedside tools, such as bioimpedance spectroscopy (BIS), facilitate objective assessment of fluid status. In clinical routine, fluid management is largely based on subjective clinical assessment and the probing for dry weight procedure. Hydration state can be measured by different methods. 1 In this regard, maintaining a normal extracellular volume status 2 is one of the major targets of the therapy yet establishing the hydration state of dialysis patients is one of the most challenging that nephrologists face in their daily practice. Nosotros observamos que el índice de volumen auricular izquierdo determinado por longitud de área medida por ecocardiograma y no la hipertrofia ventricular izquierda o dimensión de cavidades se relaciona con el estado de hidratación medido por sobrehidatación semanal y no con FO/ECW.Ĭhronic fluid overload is a frequent problem in patients treated by hemodialysis and it is known to be associated with different clinical conditions like hypertension, increased arterial stiffness, left ventricular hypertrophy, heart failure and consequently higher morbidity and mortality. No encontramos diferencias entre grupos en cuanto a la presencia de LVH, ni del índice de masa ventricular izquierda. LVH estuvo presente en 73,7% de P (concéntrica 63,2%, excéntrica 10,5%). TAFO, pero no FO/ ECW, mantuvo una relación significativa con LVAI (p = 0,03) utilizando test de ANOVA y regresión lineal. Encontramos correlación significativa entre TAFO e índice de volumen auricular izquierdo (LVAI) (r: 0.29 p=0.013) y no con FO/ECW (rho 0,06 p = 0,61). Resultadosģ grupos: A- deshidratados, TAFO 1.5 L: 18 P (23,7%). Se calcularon la sobrehidratación promedio semanal (TAFO) y sobrehidratación relativa (FO/ECW). MétodosĮstudio transversal observacional, con 76 P estables El peso seco fue determinado clínicamente se realizaron ecocardiograma, BIS y analítica sanguínea. Nuestro objetivo fue evaluar la relación entre sobrehidratación medida por Bioimpedancia multifrecuencia (BIS) y parámetros ecocardiográficos. Los datos ecocardiográficos evaluando sobrecarga hídrica son escasos. La sobrehidratación es frecuente en pacientes en hemodiálisis (P) y se asocia con hipertensión, hipertrofia ventricular izquierda (LVH) y mayor mortalidad. We found that left atrial volume index determined by echocardiographic Area-length method, but not left ventricle hypertrophy or dimensions of cavities, are related on hydration status based on bioimpedance measured time-averaged fluid overload (TAFO), and not with FO/ECW. No differences between groups in the presence of LVH or left ventricular mass index were found. LVH was present in 73.7% (concentric 63.2%, eccentric in 10.5%). TAFO, but not FO/ECW kept a significant relationship with LAVI (p=0.03) using One-Way ANOVA test and linear regression methods. We found significant correlation between TAFO and left atrial volume index (LAVI) (r: 0.29 p=0.013) but not with FO/ECW (r 0.06 p=0.61). Resultsīased on TAFO three groups were defined: A- dehydrated, TAFO 1.5 l: 18 (24%). Weekly time-averaged fluid overload (TAFO) and relative fluid overload (FO/ECW) were calculated using BIS measurements. MethodsĬross-sectional observational study including 76 stable patients. Our aim was to evaluate the relationship between fluid overload measured by bioimpedance spectroscopy (BIS) and different echocardiographic parameters. Moreover, echocardiographic data assessing fluid overload is limited. Chronic fluid overload is frequent in hemodialysis patients (P) and it associates with hypertension, left ventricular hypertrophy (LVH) and higher mortality.
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