METHOD FOR DETERMINING THE PERCENTAGE OF RECIRCULATION IN A FISTULA AND/OR CARDIOPULMONARY RECIRCULATION RELATIVE TO THE TOTAL FISTULA RECIRCULATION AND CARDIOPULMONARY RECIRCULATION

摘要

The present invention relates to a kind of methods and apparatus, the percentage determines fistula recycling and/or cardiopulmonary recycling accounts for the recycling of total fistula and cardiopulmonary recycling wherein displacement fluid is with first chamber (3) dialyzer (1) or filter of the upstream of certain alternative rate or downstream to blood during blood treatment in vitro, while liquid exits the specific flow rate of blood via film (2) dialyzer (1) or filter. It is modified by dialyzer membrane to be characterized in that substitution rate total blood flow is modified the liquid taken out while scheduled amount states dialyzer or filter upstream or downstream flow velocity QFM with the apparatus according to the invention according to the method for the present invention. Blood RBV (Δ t) or variable and blood volume, such as (Δ t), the flow velocity of substitution rate or liquid is drawn through dialyzer or filter membrane to calculate fistula recycling hematocrits of the RA based on blood to hematocrit after measurement before modified. In addition, summation R (RA) and fistula recycling and cardiopulmonary recycling (RCP) are determined. Percentage (RA) fistula recycles and/or cardiopulmonary recycle (RCP) and recycle (RCP) relative to (RA) total fistula recycling and/or cardiopulmonary, by calculating determining fistula recycling (RA) and recycling (RCP) with R (RA) and fistula recycling and cardiopulmonary.