had PD catheter placed 14 days ago , and have had to begin dialysis using fresh catheter due to infection and obstructed hemodialysis catheter ,and subsequent removal . The initial transfers have been painfull upon fill and drain , and the catheter seems less painfull if ~ 150 ml. are left to dwell as the catheter is too fresh for extended or daytime dwell periods . I am having very painfull lower obdominal cramps , and severe constipation despite several doses of lactulos ;per doctor's prescription , and have had very limited success or relief . I can't imagine how painfull exchanges will be tomorrow ? Should I continue to use Renvela until the cause of these problems can be identified ?