Values are presented as mean ± standard deviation. *RAP/PAWP, right atrial pressure /pulmonary capillary wedge pressure.
Figure 1 : Apical 4 chamber view measuring right atrial volume and left atrial volume (left) and apical 2 chamber view measuring left atrial volume (right). The atrial chambers were traced at end diastole and volumes were calculated using the biplane disc summation method.
Legend: The figure represents measurement of the right and left atrium in the apical 4 chamber and 2 chamber views. The purpose of this figure is to demonstrate the method of measuring the chambers as well as depict the RAVI/LAVI ratio.
Figure 2: Kaplan-Meyer curve of RAVI/LAVI of patients above and below the median with time measured in days.
Legend: The purpose of this figure is to demonstrate the difference in freedom from death or LVAD when stratified by median RAVI/LAVI. Kaplan Meier curves were used to assess the variance in survival probability for those above and below the median. As demonstrated by the figure, there is a significant difference in outcomes when stratified by the median RAVI/LAVI.
Figure 3: Kaplan-Meyer curve of RAVI/LAVI when compared by quartiles with time measured in days.
Legend: The purpose of this figure is to demonstrate the difference in freedom from death or LVAD when stratified by quartiles of RAVI/LAVI. Kaplan Meier curves were used to assess the variance in survival probability for those above and below the median. The figure demonstrates that outcomes are worse as the RAVI/LAVI ratio increases by quartile.
Figure 4: Bland-Altman plot for intra-observer variability with LAVI (left) and RAVI (right).
Legend: The figure represents the intraclass correlation coefficient of RAVI and LAVI. The purpose of this figure is to demonstrate the consistency of the measurements made by the two independent observers.