Association Between Interdialytic Weight Gain, Perception About Dry Weight, and Dietary and Fluid Behaviors Based on Body Mass Index Among Patients on Hemodialysis

Journal of Renal Nutrition : the Official Journal of the Council on Renal Nutrition of the National Kidney Foundation
Yuki TamauraToru Sakai

Abstract

This study aimed to identify dietary and fluid behaviors associated with relative interdialytic weight gain (RIDWG) (divided by the respective dry weight [DW]) by stratifying the patients according to body mass index (BMI). This was a cross-sectional, multicenter investigation. Between July 2016 and March 2017, data were collected from 4 Japanese dialysis centers in 3 cities. The patients (n = 577) were asked to reply to a self-completed questionnaire, including questions on perception about DW and dietary and fluid behaviors. The differences in perception about DW and dietary and fluid behaviors were compared between RIDWG nonadherence (average RIDWG ≥5% a month) and adherence subgroups. The 360 participants were stratified into thin (<20; 28.6%), normal low (≥20 and <22; 22.5%), normal high (≥22 and <25; 31.7%), and overweight (≥25; 17.2%) groups on the basis of BMI. In the thin and normal low BMI groups, the RIDWG nonadherent patients were more likely to identify their DW as "looking to increase." Although the difference was less prominent between the adherence subgroups in the thin BMI group, the RIDWG nonadherent patients in normal low BMI group seemed to generally take less care to intentionally regulate their behaviors a...Continue Reading

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