I'm not Dr. Agar, but I'm going to leap in here because they don't use NxStage in Australia where he is from. How experienced was your NxStage training nurse? Between him/her and the nephrologist, your husband's blood pressure meds--or need for them at all--should have been reevaluated. In most cases, during training folks who do short dialysis HD get OFF of their blood pressure meds. If I were you, I'd have my husband call the nephrologist and ask about this.