抄録
A clinical comparison between the partial air parallel flow (PAPF)-, none air parallel flow (NAPF)- and none air counter flow (NACF)-hemodialysis was made for 8 patients suffering from severe disequilibrium symptom during hemodialysis. PAPF method is a new hemodialysis technic in which both blood and dialysis fluid run parallel (up to down) in a dialysis vessel with air part (upper side of the vessel) in the dialysis fluid side. The results are summarized as follows: 1) There was no significant difference in removability of blood constituents such as BUN, creatinine, CTR, Ht., Na+ and K+ between the above three methods. 2) In the removal of body fluid, PAPF is higher than the other two methods by 300g per one dialysis. 3) The frequency of occurence of disequilibrium symptom is greatly surpressed by PAPF method, compared with the other two methods.
The above results for PAPF method may be drived from its' principal functions that an effective ultra-filtration of blood is performed at the air part in the dialysis fluid side, which has negative pressure against the blood passing in the membrane and that the filtrates mixed with ordinary dialysis fluid works as a buffer dialysis fluid for the concentrated blood.
PAPF method could be further improved by adjusting air volume with counterparallel flow changing valve invented by authors, according to the physical conditions of each individual patient, in view of the hemodialysis with no disequilibrium symptom.
