title: Comparative assessment of right ventricular volumes and ejection fraction by thermodilution and magnetic resonance imaging in dilated cardiomyopathy.
abstract: Measurements of right ventricular (RV) ejection fraction (EF) and volumes using a new thermodilution technique were compared to serially performed magnetic resonance imaging (MRI) in 21 patients with dilated cardiomyopathy. For RVEF (%) and RV volume indices (ml/m2) the following correlation coefficients were found: RVEF r = 0.82; end-diastolic volume index (EDVI) r = 0.45; end-systolic volume index (ESVI) r = 0.65; stroke volume index (SVI) r = 0.61; all p < 0.05. However, RVEF by thermodilution was significantly lower (RVEF thermo = 31 +/- 14 vs. RVEF MRI = 50 +/- 14, p < 0.01) and RV EDV and ESVI were significantly higher compared to MRI, while SVI showed no significant difference. Exclusion of patients with atrial fibrillation (n = 8) improved the correlations (RVEF r = 0.94, EDVI r = 0.77, ESVI r = 0.87, SVI r = 0.65, all p < 0.05), but did not reduce the mean difference between both methods.
authors.affiliation: Second Department of Internal Medicine, University of Vienna, Austria.
authors.forename: S
authors.initials: S
authors.lastname: Globits
authors.forename: R
authors.initials: R
authors.lastname: Pacher
authors.forename: H
authors.initials: H
authors.lastname: Frank
authors.forename: B
authors.initials: B
authors.lastname: Pacher
authors.forename: H
authors.initials: H
authors.lastname: Mayr
authors.forename: A
authors.initials: A
authors.lastname: Neuhold
authors.forename: D
authors.initials: D
authors.lastname: Glogar
mesh_terms: D002311:Cardiomyopathy, Dilated / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D013815:Thermodilution