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Comparison of impedance cardiography with invasive hemodynamic measurements in patients with heart failure secondary to ischemic or nonischemic cardiomyopathy

2002; Elsevier BV; Volume: 89; Issue: 8 Linguagem: Inglês

10.1016/s0002-9149(02)02257-9

1879-1913

Mark H. Drazner, Brenda Thompson, Paul B. Rosenberg, Patricia A. Kaiser, James D. Boehrer, Brian J. Baldwin, Daniel L. Dries, Clyde W. Yancy,

Blood Pressure and Hypertension Studies

Right-sided cardiac catheterization is frequently performed in patients with heart failure despite potential complications including arrhythmias, right ventricular or pulmonary artery perforation, pulmonary infarction, infection, 1 Davidson C.J. Bonow R.O. Cardiac catheterization. in: Braunwald E. Zipes D.P. Libby P. Heart Disease. A Textbook of Cardiovascular Medicine. WB Saunders, Philadelphia2001: 359-386 Google Scholar and possibly increased mortality. 2 Connors Jr, A.F. Speroff T. Dawson N.V. Thomas C. Harrell Jr, F.E. Wagner D. Desbiens N. Goldman L. Wu A.W. Califf R.M. et al. The effectiveness of right heart catheterization in the initial care of critically ill patients. SUPPORT Investigators. JAMA. 1996; 276: 889-897 Crossref PubMed Google Scholar , 3 Polanczyk C.A. Rohde L.E. Goldman L. Cook E.F. Thomas E.J. Marcantonio E.R. Mangione C.M. Lee T.H. Right heart catheterization and cardiac complications in patients undergoing noncardiac surgery an observational study. JAMA. 2001; 286: 309-314 Crossref PubMed Scopus (191) Google Scholar A noninvasive measure of cardiac output and left ventricular filling pressures would therefore be desirable. Impedance cardiography via a commercially available device (BioZ.com, CardioDynamics International Corporation, San Diego, California) may permit such noninvasive measurement of hemodynamics by assessing the change in impedance of an alternating current applied across the thorax to determine stroke volume, cardiac output, and thoracic fluid content. 4 Rosenberg P. Yancy C.W. Noninvasive assessment of hemodynamics an emphasis on bioimpedance cardiography. Curr Opin Cardiol. 2000; 15: 151-155 Crossref PubMed Scopus (45) Google Scholar However, it is not known how well its assessment of cardiac output or thoracic fluid content compares with cardiac output or pulmonary arterial wedge pressure obtained via right-sided cardiac catheterization in patients with heart failure.