Authors - Q

Quirk, P.; Ward, L.C.; Thomas, B.J.; Holt, T.L.;
        Shepherd, R.W.; Cornish, B.H.
Title   Multiple frequency bioelectrical impedance for the prediction
        of total body potassium in cystic fibrosis
Journal Clinical Nutrition
        14
        6
        DEC
Year    1995
Page    348-353
Address LC Ward
        Univ Queensland
        Dept Biochem
        Brisbane
        Qld 4072, Australia
Serial# 0261-5614
Abs.    The use of multiple frequency bioelectrical impedance
        analysis (MFBIA) was compared with single frequency
        bioelectrical impedance analysis (SFBIA) and anthropometry
        to estimate the size of the body cell mass (BCM) in a
        paediatric cystic fibrosis population. BCM was
        independently determined from the accepted gold standard
        reference of total body potassium (TBK). MFBIA was used to
        measure the impedance of the body at 248 frequencies from 4
        kHz to 1 MHz. Data were analysed using Cole-Cole plots of
        reactance versus resistance, The limits of agreement
        procedure was used to determine the reliability and
        precision of the different techniques to predict values for
        TBK, in an individual subject. The results indicate that
        MFBIA with a precision of 12% offers little improvement
        over single frequency BIA but is better and more accurate
        than anthropometry for the prediction of TBK in an
        individual patient.