Estudio comparativo de dos tipos de agujas en hemodiafiltración en línea de alta eficacia

Abstract

Post-dilution online haemodiafi ltration is the mostefficacious in removing molecules of different weights. The convective volume and the dialysis dose may be related to patient survival. Both parameters are infl uenced by blood fl ow, and the use of different needle calibres has been debated with regard to results in effi ciency and pain assessment. Objective: To compare the effi cacy, safety, convenience and pain perception between fi stula catheter and conventional needles in patients undergoing high-efficiency online haemodiafi ltration. Prospective c ross-sectional study of prevalent population on post-dilution online haemodiafi ltration. The variables analysed were demographic, vascular access haemodynamic, safety, pain scale and prepost convenience for the nurse, over 1584 sessions. Statistical analysis SPSS 13.0. Signifi cance p< 0.05. No differences in arterial pressure, venous pressure and recirculation. Differences were found in blood flow, which was higher with supercath. In efficiency, there were signifi cant differences in Kt (p=0.04), VTR (p=0.00) and litres of dialysed blood (p=0.01), supercath (63.1), (27.4), (113.1) compared to conventional (60.9), (25.3), (108.5) respectively. The nursing assessment of convenience was significantly (p=0.00) better with conventional needles, both in connection and disconnection. Pain perception in patients is higher with supercath.