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  • Title: Interdialytic weight gain: implications in hemodialysis patients.
    Author: Sarkar SR, Kotanko P, Levin NW.
    Journal: Semin Dial; 2006; 19(5):429-33. PubMed ID: 16970745.
    Abstract:
    Interdialytic weight gain (IDWG) is an easily measurable parameter in the dialysis unit, routinely assessed at the beginning of the dialysis session. It is used along with clinical symptoms and signs and predialysis blood pressure readings to make decisions regarding the amount of fluid removal during a dialysis session. IDWG is also used as a basis for fluid and salt intake recommendations. However, advising fluid and salt restriction based solely on IDWG may not be appropriate because of its status as a nutritional indicator, as well. Very few studies have been designed to determine the direct effect of IDWG on morbidity and mortality. Any such effect is confounded by residual renal function and various comorbidities, the effects of which might be difficult to separate from those of IDWG. Most attempts to control IDWG have concentrated on requiring patients to reduce fluid and dietary salt intake. Although there does not seem to be a consensus at this point, it is likely that within the lower values of IDWG (less than 5.7% of dry weight), tighter control of fluid and salt intake might not be warranted since these values may reflect higher protein and calorie intake, indicating better nutritional status.
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