Conductivity Measurements of Dialysis Efficiency in Predilution HDF Treatments

During dialysis treatments, there is an interest of measuring the dialysis efficiency for each treatment. An easy method has been developed and is based on measuring the conductivity of the dialysis fluid. Today this method exists in the dialysis machines for standard hemodialysis (HD) treatments, and for the so called postdilution hemodiafiltration (HDF) treatments at Gambro Lundia AB. However, the machines lack the method for the so called predilution HDF treatments, due to presumed complications in the calculation procedure. The aim of this thesis is to adapt the existing method for measuring the dialysis efficiency in standard HD treatments, so that it also works for predilution HDF treatments. Measurements were performed on the dialysis machine during simulated treatments, and modification of the existing method was based on the data from these measurements. The results indicate that the method also works for predilution HDF, without requiring any modifications of the existing algorithms. Mätning av dialyseffektivitet i HDF-behandlingar med hjälp av konduktivitet