Evaluation of impedance technique for fluid-volume monitoring during hemodialysis.
Fluid-volume changes during hemodialysis were studied in 30 patients at four separate treatments in each patient. Readings of fluid-volume changes obtained by a fluid-balance monitor with non-invasive tetrapolar impedance technique were compared to changes in weight caused by the treatment. A correlation coefficient of r = 0.90 (p less than 0.001) was found. A survey of papers describing impedance measurements during hemodialysis or diuresis is also presented.
D000328:Adult; D000368:Aged; D001826:Body Fluids; D001835:Body Weight; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000379:methods*; D010992:Plethysmography, Impedance; D006435:Renal Dialysis / Q000379:methods*