#2543 NEPHROFLOW FOR ESTIMATION OF VASCULAR ACCESS FLOW FOR HEMODIALYSIS: WHEN TO MEASURE?

Abstract Background and Aims Current guidelines emphasize the need for surveillance of vascular access (VA) hemodialysis (HD), especially arteriovenous fistulas (AVF). Detecting a reduction in VA flow is auseful tool to anticipate complications as thrombosis. The DMed NephroFlow(NIPRO®) system, based on ultrasound dilution (UD) methods, has been shown tobe comparable classic Transonic® measurement system estimating canbe applied surveillance. Our objetctive determine if there are significant differences when performing measurements with NephroFlow® between first hour second HD session, well any three days which patient attends HD. Method For two consecutive weeks, patients AVF or graft (gAVF) our unit underwent using at HD, 3 that they attended sessions. Interspersing each week avoid loss quality. study, we proceeded according usual recommendations stable 250 ml/min, corresponding ultrafiltration rate, needles same vein, without change dry weight, nurse staff, transferring all conventional Results Twenty-one have included, 13 male 8 female, mean age 68±12.3 years. time was 36±23 months. type was: 10 presented radiocephalic AVF, 5 brachiocephalic 2 brachiobasilic 4 gAVF. estimated obtained by NephroFlow ® sessions 1056 ± 754 1130.16 769 respectively; intraclass correlation index 0.737 K-W Test H 0.349 (p≤0.05). day 1129±794.5ml/min, ICC = 0.662; 1027.5±729ml/min, 0.812; third 1121.5±±ml/min, 0.774. In cases p<0.05. Conclusion No observed neither (the session) nor performance (first, session week). UD may be useful could necessary.