Factors associated with reduction of left ventricular mass in children on peritoneal dialysis

Aim This study aimed to investigate sensitive factors involved in left ventricular mass reduction in children with end‐stage renal disease (ESRD) undergoing peritoneal dialysis. Methods Thirty‐five subjects on peritoneal dialysis were enrolled. Two successive echocardiographic and clinical data for each subject were obtained. Blood pressure and left ventricular mass index (LVMI) were indexed through a division with the normal 95 th percentile value. Differences in numeric data between two datasets were calculated. Results The mean age was 12.9 ± 4.6 years. Predictors of left ventricular hypertrophy and its persistence were systolic blood pressure index ( P = 0.019 and P = 0.046) and E’ velocity ( P = 0.035 and P = 0.031) in univariate analysis. However, differences in these predictors between the datasets were not related to the change in indexed LVMI. Reduction in indexed LVMI was correlated to a reduction of indexed left atrial volume ( R = 0.638, P = 0.001), trans‐mitral A velocity ( R = 0.443, P = 0.011), and serum blood urea nitrogen level ( R = 0.372, P = 0.028) and an elevation of haemoglobin level ( R = −0.374, P = 0.027). Conclusion The extent of circulating volume expansion is potentially the main predictive factor for change of LVMI, because the volume dependent diastolic functional variables correlate to the change of LVMI. Further study with a large number of ESRD children including a group under fluid volume control is needed to investigate the role of volume expansion on the change of LVMI.