Journal article

Comparison of total body chlorine, potassium, and water measurements in children with cystic fibrosis

DJ Borovnicar, DB Stroud, JE Bines, RHM Haslam, BJG Strauss

AMERICAN JOURNAL OF CLINICAL NUTRITION | AMER SOC NUTRITION-ASN | Published : 2000

Abstract

BACKGROUND: Symptoms of cystic fibrosis (CF) may limit the utility of total body chlorine (TBCl) and total body potassium (TBK) measurements for assessing body fluid compartments of children. OBJECTIVE: This study assessed relations among independent measurements of TBCl, TBK, and total body water (TBW) in children with CF. DESIGN: We compared cross-sectional measurements of TBCl by in vivo neutron activation analysis, TBK by whole-body counting of (40)K, TBW by D(2)O dilution [TBW(D(2)O)], and TBW from TBCl and TBK [TBW(Cl + K)] in 19 prepubertal children (13 boys) aged 7.6-12.5 y who had mild symptoms of CF. Body-composition measurements were compared with data from previous studies of hea..

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