Right ventricular diastolic relaxation in conscious dog models of pressure overload, volume overload, and ischemia Ares D. Pasipoularides, MD, PhD, Ming.

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Right ventricular diastolic relaxation in conscious dog models of pressure overload, volume overload, and ischemia Ares D. Pasipoularides, MD, PhD, Ming Shu, PhD, Ashish Shah, MD, Donald D. Glower, MD The Journal of Thoracic and Cardiovascular Surgery Volume 124, Issue 5, Pages 964-972 (November 2002) DOI: 10.1067/mtc.2002.126677 Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions

Glower and Pasipoularides The Journal of Thoracic and Cardiovascular Surgery 2002 124, 964-972DOI: (10.1067/mtc.2002.126677) Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions

Fig. 1 Comparison of TE and EC algorithms. The top panels show application of the TE algorithm to 3 waveforms: the second and third were extrapolated and truncated, respectively. The bottom panels show application of the EC algorithm to the same waveforms: all 3 beats preserve their original shapes. The Journal of Thoracic and Cardiovascular Surgery 2002 124, 964-972DOI: (10.1067/mtc.2002.126677) Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions

Fig. 2 Steady-state RV pressure pulses under control conditions (A), pressure overload (B), volume overload (C), and ischemia (D). Peak systolic pressure is greatly increased under pressure overload, slightly increased under volume overload, and slightly decreased under ischemia. The Journal of Thoracic and Cardiovascular Surgery 2002 124, 964-972DOI: (10.1067/mtc.2002.126677) Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions

Fig. 3 Tracings of RV isovolumic pressure decay under control conditions (A), pressure overload (B), volume overload (C), and ischemia (D). Dots denote every other point in the digital ensemble average of the measured waveforms. The line shows the exponential fit. Arrows indicate the last points used in regression. The Journal of Thoracic and Cardiovascular Surgery 2002 124, 964-972DOI: (10.1067/mtc.2002.126677) Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions

Fig. 4 Descriptive statistics of the exponential model coefficients. CTRL, Control condition; PO, pressure overload; VO, volume overload; IS, ischemia. The Journal of Thoracic and Cardiovascular Surgery 2002 124, 964-972DOI: (10.1067/mtc.2002.126677) Copyright © 2002 American Association for Thoracic Surgery Terms and Conditions