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To evaluate the clinical usefulness of measuring transthoracic electrical impedance in patients with pulmonary edema, we studied 27 normal subjects and 33 patients. In normal subjects, impedance increased when body position changed from supine to standing (p less than 0.01) and when lung volume increased from residual volume to total lung capacity (p less than 0.01). Impedance values vari7 omega) when measured hourly without removing the electrodes. In only five of 11 patients with clinically severe pulmonary edema and five of eight with radiologically severe pulmonary edema were impedance values outside the normal range. Changes in impedance values correlated with changes in clinical and radiographic indexes of pulmonary edema. We conclude that (1) single measurements of impedance are useless in diagnosing pulmonary edema, and (2) impedance changes as predicted as pulmonary edema increases and decreases, and these changes are readily detected by simpler methods of evaluation.
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
July 1969,
Surgery,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
December 1978,
Masui. The Japanese journal of anesthesiology,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
July 2022,
Pediatrics and neonatology,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
June 1991,
British journal of anaesthesia,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
January 1981,
European journal of applied physiology and occupational physiology,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
June 2001,
Critical care medicine,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
March 1970,
Japanese heart journal,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
February 1996,
IEEE transactions on bio-medical engineering,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
January 1992,
Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft fur Medizinische Physik and the European Federation of Organisations for Medical Physics,
A Fein, and
R F Grossman, and
J G Jones, and
P C Goodman, and
J F Murray
January 1975,
L'Ateneo parmense. Acta bio-medica : organo della Societa di medicina e scienze naturali di Parma,
