Correlation of esophageal conductance measurements with aortic and left ventricular diameters and stroke volume. IEEE Trans Biomed Eng 2000 Apr;47(4):559-64
Date
04/14/2000Pubmed ID
10763303DOI
10.1109/10.828157Scopus ID
2-s2.0-0034029253 (requires institutional sign-in at Scopus site) 2 CitationsAbstract
Esophageal conductance measurements were correlated with hemodynamic events in 9 dogs chronically instrumented for measurement of left ventricular (LV) and aortic pressures, LV short axis and descending aortic diameters, and aortic blood flow. A four-electrode conductance catheter was positioned in the esophagus. Both an internal and an internal/external configuration were examined during anesthesia with hemodilution, pulmonary lavage and dobutamine infusion. LV stroke volume was altered by caval occlusion at each intervention. Stroke conductance was highly correlated to aortic or LV diameters and stroke volume over a range of diameters depending on the electrode configuration. Esophageal conductance measurements are directly influenced by local hemodynamic events adjacent to the site of measurement.
Author List
Hettrick DA, Battocletti JH, Pagel PS, Vurek GG, Tessmer JP, Kersten JR, Warltier DCAuthors
Paul S. Pagel PhD, MS, MD Emeritus Professor in the Anesthesiology department at Medical College of WisconsinDavid C. Warltier PhD Emeritus Professor in the Anesthesiology department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
AnimalsAorta, Thoracic
Dogs
Electric Conductivity
Esophagus
Hemodynamics
Models, Cardiovascular
Myocardial Contraction
Stroke Volume
Ventricular Function, Left
