Volume 102(suppl 3):Iii-154-Iii-159

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Volume 102(suppl 3):Iii-154-Iii-159 Failure of Stroke Volume Augmentation During Exercise and Dobutamine Stress Is Unrelated to Load-Independent Indexes of Right Ventricular Performance After the Mustard Operation by Graham P. Derrick, Indra Narang, Paul A. White, Andrea Kelleher, Andrew Bush, Daniel J. Penny, and Andrew N. Redington Circulation Volume 102(suppl 3):Iii-154-Iii-159 November 7, 2000 Copyright © American Heart Association, Inc. All rights reserved.

Radiograph of components of research preparation Radiograph of components of research preparation. 1, Integrated conductance and micromanometer catheter in RV apex. 2, Thermodilution catheter in pulmonary artery. 3, Latex occlusion balloon placed at junction of inferior caval vein and systemic venous atrium. Radiograph of components of research preparation. 1, Integrated conductance and micromanometer catheter in RV apex. 2, Thermodilution catheter in pulmonary artery. 3, Latex occlusion balloon placed at junction of inferior caval vein and systemic venous atrium. Graham P. Derrick et al. Circulation. 2000;102:Iii-154-Iii-159 Copyright © American Heart Association, Inc. All rights reserved.

Hemodynamic response. Hemodynamic response. Top, Response to exercise; bottom, response to dobutamine infusion. Graham P. Derrick et al. Circulation. 2000;102:Iii-154-Iii-159 Copyright © American Heart Association, Inc. All rights reserved.

Example of pressure-volume loops during preload reduction. Example of pressure-volume loops during preload reduction. Top, Subject who failed to increase cardiac output with dobutamine infusion, yet contractile indexes increase appropriately. Bottom, Another subject who did increase cardiac output as well as contractility during dobutamine infusion; however, in both, fall in stroke volume is evident. Graham P. Derrick et al. Circulation. 2000;102:Iii-154-Iii-159 Copyright © American Heart Association, Inc. All rights reserved.

Invasive indexes. Invasive indexes. Graphs show derived indexes during invasive study. Values plotted are means and SEMs. Statistical analysis by ANOVA. Graham P. Derrick et al. Circulation. 2000;102:Iii-154-Iii-159 Copyright © American Heart Association, Inc. All rights reserved.