This study aimed to investigate the influence of different
peritoneal dialysis regimens on blood pressure control, the diurnal pattern of blood pressure and
left ventricular hypertrophy in patients on
peritoneal dialysis. Forty-four patients undergoing
peritoneal dialysis were enrolled into the study. Patients were treated with different regimens of
peritoneal dialysis: 26 patients on
continuous ambulatory peritoneal dialysis (
CAPD) and 18 patients on automated
peritoneal dialysis (APD). All patients performed 24-hour ambulatory blood pressure monitoring (ABPM) and echocardiography. Echocardiography was performed for measurement of cardiac parameters and calculation of left ventricular mass index (LVMI). There were no significant differences in average of systolic and diastolic blood pressure during 24-hour, daytime, and nighttime between
CAPD and APD groups. There were no significant differences in diurnal variation of blood pressure, systolic and diastolic blood pressure load, and LVMI between
CAPD and APD groups. LVMI was associated with 24 hour systolic blood pressure load (r = 0.311, P < 0.05) and daytime systolic blood pressure load (r = 0.360, P < 0.05). In conclusion, this study found that there is no difference in blood pressure control, diurnal variation of blood pressure and
left ventricular hypertrophy between
CAPD and APD patients. The different
peritoneal dialysis regimens might not influence blood pressure control and diurnal variation of blood pressure in patients on
peritoneal dialysis.