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  • Title: Comparison of oral and intravenous administration of sodium bromide for extracellular water measurements.
    Author: Vaisman N, Pencharz PB, Koren G, Johnson JK.
    Journal: Am J Clin Nutr; 1987 Jul; 46(1):1-4. PubMed ID: 3604959.
    Abstract:
    Extracellular water (ECW) is a component of body composition and an indicator of nutritional status. Although bromide has been used to measure ECW, no data regarding serial measurements are available. We attempted to validate giving bromide orally and to determine whether serial measurements of ECW are possible. Seven healthy adult volunteers were studied. Each received 1 cc 3% NaBr solution per kg body weight once intravenously and 3 times orally over 6 wk. Bromide concentrations were determined by neutron activation. ECW did not differ significantly at 2, 3, or 4 h after drug administration although there was a small but significant difference between modes of administration (p = less than 0.05). With repeated oral doses the estimate of ECW was unchanged; thus, oral bromide can be used for serial determination of ECW.
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