title: Computerized form of Siggaard-Andersen's double chart.
abstract: A description of the computer program IEFPlus is given. The program is based on the sodium-potassium double chart for classification of salt-water disturbances presented by Siggaard-Andersen. Input variables of the program are: 1. the concentration of sodium in the plasma, representing the sodium concentration in the Ecf, 2. the relative potassium deficit or excess in the Icf. estimated on the basis of the plasma potassium concentration and the blood pH, and 3. the total water excess or deficit in the body estimated on the basis of the change in body weight. Output variables are: 1. the sodium excess or deficit in the Ecf, and 2. the volumes of the Ecf and Icf (and/or the changes in either one). This simple model is displayed in one screen showing the values of all the essential parameters many of which can be easily changed. A graphic display of the Icf and Ecf volumes is also given. IEFPlus enables the user to predict the effect of sodium and water administration. Similarly the effect of renal or extrarenal water and sodium losses can be taken into account.
authors.affiliation: Department of Clinical Biochemistry, Hospital Klandno, Czech Republic.
authors.forename: A
authors.initials: A
authors.lastname: Jabor
authors.forename: M
authors.initials: M
authors.lastname: Horácek
mesh_terms: D001834:Body Water / Q000737:chemistry / Q000378:metabolism; D001835:Body Weight; D003626:Data Display; D005110:Extracellular Space / Q000737:chemistry / Q000378:metabolism; D005544:Forecasting; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007424:Intracellular Fluid / Q000737:chemistry / Q000378:metabolism; D007668:Kidney / Q000378:metabolism; D011188:Potassium / Q000032:analysis / Q000097:blood*; D012964:Sodium / Q000008:administration & dosage / Q000032:analysis / Q000097:blood*; D012984:Software; D014584:User-Computer Interface; D014867:Water / Q000008:administration & dosage; D014883:Water-Electrolyte Imbalance / Q000097:blood*
chemical_list: D014867:Water; D012964:Sodium; D011188:Potassium