Transthoracic electrical impedance: Quantitative evaluation of a non-invasive measure of thoracic fluid volume

Russell V. Luepker, John R. Michael, J. Richard Warbasse

Research output: Contribution to journalArticlepeer-review

105 Scopus citations

Abstract

Transthoracic electrical impedance (TEI) measurements have previously been proposed as a sensitive non-invasive measure of fluid shifts in the thorax. The present study compares measured changes in TEI to measured thoracic intra- and extravascular fluid volumes in 22 experimental animals during production of pulmonary edema, phlebotomy, pleural effusion, pneumothorax, and pulmonary artery obstruction. Insignificant shifts in TEI and thoracic fluid volume were observed in control animals. In all animals increased intrathoracic fluid volumes were associated with significantly decreased TEI while decreases in thoracic fluid volume were associated with significant increases in TEI. Alterations in pleural, pulmonary extravascular, and intrathoracic blood volume were quantifiable by TEI measurements at statistically significant levels. Certain limitations in the clinical application of this method are discussed.

Original languageEnglish (US)
Pages (from-to)83-93
Number of pages11
JournalAmerican Heart Journal
Volume85
Issue number1
DOIs
StatePublished - Jan 1973

Fingerprint Dive into the research topics of 'Transthoracic electrical impedance: Quantitative evaluation of a non-invasive measure of thoracic fluid volume'. Together they form a unique fingerprint.

Cite this