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Nefrología (Madrid)

versión impresa ISSN 0211-6995

Resumen

MADUELL CANALS, Francisco et al. Guidelines for automated manual infusion: a practical way of prescribing postdilution on-line haemodiafiltration. Nefrología (Madr.) [online]. 2010, vol.30, n.3, pp.349-353. ISSN 0211-6995.

Post-dilution on-line hemodiafiltration (OL-HDF) is the most efficient infusion mode to obtain maximum clearances of uremic toxins, with a recommended manual infusion flow (Qi) of 25% of the blood flow with the main limitation that causes alarms by hemoconcentration throughout the session. Recent technical advances allow automatic prescription of Qi if hematocrit and total protein (TP) values are specified. As these analytical results are not possible to obtain in each dialysis session, a practical way to prescribe Qi is to make an automatic prescription adjusting the hematocrit and total protein values at the beginning of the session to obtain the manual prescription required and we will call it automatic-manual prescription. The aim of this study was to compare manual Qi with automatic-manual Qi in postdilution OL-HDF. 30 patients (16 men and 14 women), 59.9 ± 15 years old, in hemodialysis program for 50.1 ± 67 months were included. Every patient underwent four OL-HDF sessions, two with manual Qi (4008-S and 5008 monitors) and two with automatic-manual Qi (A-M), one with the same Qi and one with manual Qi +20 (A-M+20). The same usual dialysis parameters were maintained: helixone dialyzer, dialysis time of 266 ± 39 minutes, blood flow of 420 ± 36. Recirculation, Kt and intradialysis alarms were measured at each session. No significant differences in the fistula recirculation or dialysis dose measured using Kt. Total infusion volume was 24.9 ± 4 (4008S), 23.4 ± 4 L (5008) with manual Qi, 23.6 ± 4 L (A-M) Qi (NS) and 25.8 ± 5 L (A-M+20). Only 14% of patients had no incidents. The number of alarms was significantly higher with manual prescription 55 alarms with 4008 and 40 with 5008 vs. AM (11) p <0.01) and A-M+20 (16 alarms) We concluded that automatic-manual Qi is a practical way for post-dilutional OL-HDF prescription where the same efficiency and total reinfusion volume with an important reduction of intradialysis alarms are obtained, allowing to rise Qi by 20% without increasing intradialysis alarms.

Palabras clave : Intradialysis alarms; Automatic; Infusion flow; Postdilution on-line hemodiafiltration.

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