Variability of Predialytic, Intradialytic, and Postdialytic Blood Pressures in the Course of a Week: A Study of Dutch and US Maintenance Hemodialysis Patients

Blood pressure of patients on a thrice-weekly dialysis schedule varies systematically over the week. Predialysis blood pressure is highest at the first hemodialysis session of the week, most likely due to greater interdialytic weight gain. Intra- and postdialytic blood pressures also are highest at the first session of the week despite higher ultrafiltration rates.