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The Utility of Overnight Urine Collections in Assessing Compliance With a Low Sodium Intake Diet

The Utility of Overnight Urine Collections in Assessing Compliance With a Low Sodium Intake Diet To develop methods of estimating sodium intake in free-living persons, we gave normal volunteers mean sodium intakes of 65, 110, and 200 mEq/day. The intake was randomly varied about each mean by an SD of 12.5% daily. Twenty-four-hour and night urinary sodium excretion were measured. Night urinary sodium excretion was also estimated by means of inexpensive quantitative and qualitative chloride titrator strips. The latter required no timed urine collection. A total of three 24-hour urine collections were necessary to differentiate the regimens with 95% accuracy. Three night urinary sodium excretory estimates by the quantitative chloride titrator provided 79% accuracy in identifying the level of dietary sodium intake. By applying the qualitative chloride titrator every other day, the dietary regimens could be differentiated with 95% accuracy. These techniques were not only useful in estimating sodium intake, but also provided a simple means of documenting compliance to sodium restriction. Patients should have no difficulty in applying these methods themselves in a home setting. (JAMA 1983;249:1764-1768) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA American Medical Association

The Utility of Overnight Urine Collections in Assessing Compliance With a Low Sodium Intake Diet

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References (15)

Publisher
American Medical Association
Copyright
Copyright © 1983 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
0098-7484
eISSN
1538-3598
DOI
10.1001/jama.1983.03330370074041
Publisher site
See Article on Publisher Site

Abstract

To develop methods of estimating sodium intake in free-living persons, we gave normal volunteers mean sodium intakes of 65, 110, and 200 mEq/day. The intake was randomly varied about each mean by an SD of 12.5% daily. Twenty-four-hour and night urinary sodium excretion were measured. Night urinary sodium excretion was also estimated by means of inexpensive quantitative and qualitative chloride titrator strips. The latter required no timed urine collection. A total of three 24-hour urine collections were necessary to differentiate the regimens with 95% accuracy. Three night urinary sodium excretory estimates by the quantitative chloride titrator provided 79% accuracy in identifying the level of dietary sodium intake. By applying the qualitative chloride titrator every other day, the dietary regimens could be differentiated with 95% accuracy. These techniques were not only useful in estimating sodium intake, but also provided a simple means of documenting compliance to sodium restriction. Patients should have no difficulty in applying these methods themselves in a home setting. (JAMA 1983;249:1764-1768)

Journal

JAMAAmerican Medical Association

Published: Apr 1, 1983

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