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Nefrología (Madrid)

versión On-line ISSN 1989-2284versión impresa ISSN 0211-6995

Resumen

GIOIA, María Cristina Di et al. Echocardiographic findings in haemodialysis patients according to their state of hydration. Nefrología (Madr.) [online]. 2017, vol.37, n.1, pp.47-53. ISSN 1989-2284.  http://dx.doi.org/10.1016/j.nefro.2016.06.003.

Background:

Chronic fluid overload is frequent in hemodialysis patients (P) and it associates with hypertension, left ventricular hypertrophy (LVH) and higher mortality. Moreover, echocardiographic data assessing fluid overload is limited. Our aim was to evaluate the relationship between fluid overload measured by bioimpedance spectroscopy (BIS) and different echocardiographic parameters.

Methods:

Cross-sectional observational study including 76 stable patients. Dry weight was clinically assessed. BIS and echocardiography were performed. Weekly time-averaged fluid overload (TAFO) and relative fluid overload (FO/ECW) were calculated using BIS measurements.

Results:

Based on TAFO three groups were defined: A- dehydrated, TAFO < -0.25 L 32 P (42%); B- normohydrated, TAFO between -0.25 and 1.5 l: 26 (34%); C- overhydrated, TAFO>1.5 l: 18 (24%). 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). TAFO, but not FO/ECW kept a significant relationship with LAVI (p = 0.03) using One-Way ANOVA test and linear regression methods. LVH was present in 73.7% (concentric 63.2%, eccentric in 10.5%). No differences between groups in the presence of LVH or left ventricular mass index were found.

Conclusions:

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.

Palabras clave : Left atrial volume; Fluid overload; Bioimpedance spectroscopy; Time-averaged fluid overload; Haemodialysis.

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