title: [Thoracic impedance in the determination of hydration following heart surgery under extracorporeal circulation].
abstract: Changes in thoracic water content are measurable by determining basic impedance (Zo). In 57 cardiac surgical patients Zo decreased postoperatively by an average 24% corresponding to water retention of about 1.51. On the second postoperative day the difference to the initial preoperative value was still 8.5% corresponding to a water amount of over 500 ml. A close mathematic correlation exists between changes in the basic impedance (delta Zo) and fluid balance with a correlation coefficient of 0.94. The simple, non-invasive method is suitable for therapeutic control of fluid balance and quantitative diagnosis of pulmonary hyperhydration forms of various causes.
authors.affiliation: Anästhesieabteilung, Zentralklinik für Herz- und Lungenkrankheiten Bad Berka.
authors.forename: G
authors.initials: G
authors.lastname: Kessler
authors.forename: I
authors.initials: I
authors.lastname: Enders
authors.forename: B
authors.initials: B
authors.lastname: Schilling
mesh_terms: D000328:Adult; D000368:Aged; D006348:Cardiac Surgical Procedures; D002307:Cardiography, Impedance; D005112:Extracorporeal Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010992:Plethysmography, Impedance; D011654:Pulmonary Edema / Q000175:diagnosis*
vernacular_title: Thorakale Impedanz zur Bestimmung der Hydratation nach Herzoperationen in extrakorporaler Zirkulation.