Reduction of intradialytic hypotensive episodes2 Cost-saving potential Advanced fluid management for effective cardioprotection Chronic volume overload is a common condition among patients with ESRD and is directly associated with hypertension, increased arterial stiffness and left ventricular hypertrophy LVH. It is ultimately one of the key factors contributing to the high CVD related morbidity and mortality amongst these patients. Vice versa, it was demonstrated that achieving normohydration through effective Fluid Management therapy is associated with better outcome of HD patients3. Advanced fluid management may lead to: Improved patient well-being Less intradialytic complications and hypotensive episodes Better control of hypertension Reduction in antihypertensive medication Reduced cardiovascular mortality Cost-saving potential of fluid management In dialysis patients, fluid overload is associated with acute complications including congestive heart failure and pulmonary oedema. Fluid overload can require emergency dialysis outside of the routine dialysis sessions.

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Search Menu Introduction and Aims: Weight gain interdialysis is the parameter more used to program ultrafiltration in each dialysis session. It has been proposed to monitorize hydration status of patients in haemodialysis employing bioimpedanciometry. Fresenius BCM monitor shows degree of overhydration through OH parameter based in the mathemathical model of Chamney et al.

OH parameter has showed to be predictive of mortality in haemodialysis patients. However, OH shows important differences to weight gain interdialysis. Methods: Patients in haemodialysis in stable clinical situation without signs of cardiac failure. We practiced predialysis impedanciometry of mid-weed session with BCM monitor. We registered dry weight and previous postdialysis weight and calculated weight gain from them.

Results: Study included 33 patient. Dry weight OH-BCM values were not correlated with weight gain from previous session nor from dry weight. Predialysis OH-Cha was 2. It did not show significant differences with any weight gain parameters. OH-Cha did not correlated with weight gain parameters. We did not find any regression equation that could predict gain weight employing OH-BCM or OH-Cha parameters after including other variables as age, sex, size or dry weight.

Conclusions: Overhydration OH parameter calculated with BCM Fresenius monitor in haemodialysis patients do not show good relation with interdialysis weight gains. It should not be used to program ultrafiltration in each dialysis session because underestimate liquid gain suffered from previous dialysis session. OH parameter of BCM monitor is supported in a different equation to the model of Chamney et al, and so, it is not validated.

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