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A PDA-based dietary self-monitoring intervention to reduce sodium intake in an in-center hemodialysis patient

Authors Mary Ann Sevick, Roslyn A Stone, Matthew Novak, Beth Piraino, Linda Snetselaar, et al

Published 2 July 2008 Volume 2008:2 Pages 177—184

Mary Ann Sevick1,2,3,4, Roslyn A Stone1,4, Matthew Novak3, Beth Piraino3, Linda Snetselaar5, Rita M Marsh3, Beth Hall3, Heather Lash6, Judith Bernardini3,7, Lora E Burke7

1Center for Health Equity Research and Promotion, 2Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA, USA; 3School of Medicine, 4Graduate School of Public Health, 7School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA; 5University of Iowa; 6Dialysis Clinic, Inc.

Objective: The purpose of the BalanceWise-hemodialysis study is to determine the efficacy of a dietary intervention to reduce dietary sodium intake in patients receiving maintenance, in-center hemodialysis (HD). Personal digital assistant (PDA)-based dietary self-monitoring is paired with behavioral counseling. The purpose of this report is to present a case study of one participant’s progression through the intervention.

Methods: The PDA was individually programmed with the nutritional requirements of the participant. With 25 minutes of personalized instruction, the participant was able to enter his meals into the PDA using BalanceLog® software. Nutritional counseling was provided based on dietary sodium intake reports generated by BalanceLog®.

Results: At initiation of the study the participant required 4 HD treatments per week. The participant entered 342 meals over 16 weeks (≥3 meals per day). BalanceLog® revealed that the participant consumed restaurant/fast food on a regular basis, and consumed significant amounts of corned beef as well as canned foods high in sodium. The study dietitian worked with the participant and his wife to identify food alternatives lower in sodium. Baseline sodium consumption was 4,692 mg, and decreased at a rate of 192 mg/week on average. After 11 weeks of intervention, interdialytic weight gains were reduced sufficiently to permit the participant to reduce HD treatments from 4 to 3 per week. Because of a low serum albumin at baseline (2.9 g/dL) the study dietitian encouraged the participant to increase his intake of high quality protein. Serum albumin level at 16 weeks was unchanged (2.9 g/dL). Because of intense pruritis and a high baseline serum phosphorus (6.5 mg/dL) BalanceLog® electronic logs were reviewed to identify sources of dietary phosphorus and counsel the participant regarding food alternatives. At 16 weeks the participant’s serum phosphorus fell to 5.5 mg/dL.

Conclusions: Self-monitoring rates were excellent. In a HD patient who was willing to self-monitor his dietary intake, BalanceLog® allowed the dietitian to target problematic foods and provide counseling that appeared to be effective in reducing sodium intake, reducing interdialytic weight gain, and alleviating hyperphosphatemia and hyperkalemia. Additional research is needed to evaluate the efficacy of the intervention.

Keywords: hemodialysis, self care, computers, handheld, personal digital assistant, randomized clinical trial, behavioral research, adherence

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