Fig. 1.

Changes in 44-hour interdialytic systolic blood pressure as a function of the echocardiographic volume parameter. The echocardiographic volume parameter was dichotomized at the median value at the baseline visit, yielding a low index and a high index. Compared to the high index, low index would be expected to have less volume. The forest plot shows the additional change in systolic blood pressure in the ultrafiltration group compared to the change in the control group. The mean additional change in blood pressure (shown in the forest plot) in the ultrafiltration group at 4 and 8 weeks did not differ between low index and high index. IVSd = Intraventricular septal thickness at diastole; LVId = left ventricular interior diameter at diastole; LVPWd = left ventricular posterior wall thickness at diastole; MWFS = midwall fractional shortening.