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Use of a predictor for total body potassium content: application to nutrition and hypertension

Journal Article · · J. Med. (Westbury, N.Y.); (United States)
OSTI ID:6602901
;
Total body potassium (TBK), measured at different institutions, has no reference standard for comparison. A useful reference formula, however, based on body size and age, has been derived at the Brookhaven National Laboratory. This formula was used to help calibrate a simple whole body counter for measuring total potassium and applied to nutrition and hypertension studies. A sodium iodide detector was used for counting gamma rays emitted by potassium-40 to estimate TBK. The mean ratio (+/- S.D.) of adjusted TBK measurements to predicted values was 1.002 +/- 0.047. The ratio of lean body mass estimated by the TBK measurement to that derived from skin fold thickness was 1.069 +/- 0.056. In hypertensives on low dose thiazide, the ratio of TBK measurements to predicted values was 0.994 +/- 0.052. Thus, our TBK measurements were adjusted in close agreement with a predictor formula, provided higher estimates of lean body mass than did skin fold thickness, and showed no change in thiazide treated hypertensives.
Research Organization:
Wright State Univ., Dayton, OH (USA)
OSTI ID:
6602901
Journal Information:
J. Med. (Westbury, N.Y.); (United States), Journal Name: J. Med. (Westbury, N.Y.); (United States) Vol. 19:3-4; ISSN JNMDB
Country of Publication:
United States
Language:
English

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Related Subjects

550901* -- Pathology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BODY COMPOSITION
CALIBRATION
CARDIOVASCULAR DISEASES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
HYPERTENSION
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
METALS
NUCLEI
NUTRITION
ODD-ODD NUCLEI
PATHOGENESIS
POTASSIUM
POTASSIUM 40
POTASSIUM ISOTOPES
RADIATION DETECTORS
RADIOISOTOPES
SYMPTOMS
VASCULAR DISEASES
WHOLE-BODY COUNTERS
YEARS LIVING RADIOISOTOPES