Observational study on markers of cardiovascular risk in renal patient: conventional hemodialysis vs. haemofiltration online.

Homocysteine is considered as independent predictor of cardiovascular risk. Patients treated with haemodialysis (HD) exhibit elevated homocysteine levels, even four times higher than the general population does. This study focuses on the determination of the vascular risk in patients treated with conventional HD and haemodiafiltration on-line (HDF). It was also considered important to determine whether there was a relationship between homocysteine and the variables given to the patient such as dialysis dose, obesity and treatment with folic acid, vitamin B6 and vitamin B12. A one-year cross-sectional observational study was conducted on patients initially treated with renal replacement therapy such as HDF on-line and conventional HD. Data collected included patient's age, sex, aetiology, duration of dialysis treatment and association with dialysis session, including data on body mass index, waist circumference, treatment with vitamin B6, B12 and folic acid. The results obtained conclusively indicate that patients treated with renal replacement therapy such as HDF on-line exhibit lower homocysteine levels than those treated with conventional HD. Therefore we can conclude that: homocysteine markers indicate that patients treated with HDF on-line are exposed to lower average vascular risk.

Eficacia del tratamiento con r-huepo, al inicio o final de la sesión, en hemodialisis convencional y “on-line” / Efficacy of treatment with r-huepo, at the beginning or end of the session, in conventional and on-line haemodialysis

Al utilizar la r-HuEPO debemos tener en cuenta sus características farmacocinéticas. Con el fin de indicar dosis, frecuencia y vía de administración nos propusimos estudiar la eficacia del tratamiento con r-HuEPO endovenosa, en hemodiálisis convencional y “On-Line”, al ser administrada al inicio o al final de la sesión. Estudio descriptivo prospectivo en el que fueron incluidos todos los pacientes crónicos que se dializaban en nuestra unidad. Se monitorizó hematocrito y hemoglobina, niveles de ferritina, hierro, índice de saturación de transferrina y dosis de diálisis. Se tuvo en cuenta el índice de resistencia a factores estimulantes de la eritropoyesis. Registramos dosis y frecuencia del tratamiento con r-HuEPO. Los resultados indicaron que no hubo variación significativa en los parámetros analíticos estudiados ni en la dosis de r HuEPO al variar el momento de la administración del tratamiento. Tampoco observamos modificaciones en el índice de factores estimulantes de la eritropoyesis. Por tanto, la eficacia del tratamiento con r-HuEPO alfa no se modifica por ser administrada al inicio o al final de la sesión. Las mujeres mostraron puntuaciones menores; el grupo de 25-34 años tuvo puntuaciones más altas que los pacientes mayores, aunque estos últimos estaban más cerca de la población general. No aparecen diferencias significativas entre modalidades de tratamiento, incluso cuando se obviaron los factores que más influyen en la calidad de vida relacionada con la salud (AU)

When using r-HuEPO we should bear in mind its pharmacokinetic characteristics. In order to indicate the dose, frequency and means of administration, we proposed to study the efficacy of treatment with intravenous r-HuEPO, in conventional and on-line haemodialysis, when administered at the beginning or at the end of the session. Prospective descriptive study in which all chronic patients undergoing dialysis at our unit were included. Haematocrit and haemoglobin were monitored, as well as ferritin and iron levels, transferrin saturation index and dialysis doses. The index of resistance to erythropoiesis stimulating factors was taken into account. We recorded doses and frequency of the treatment with r-HuEPO..The results showed that there was no significant variation in the analytical parameters studied or in the dose of r-HuEPO when the time the treatment is administered varies. We did not observe modifications in the index of erythropoiesis stimulating factors. Accordingly, the efficacy of treatment with r-HuEPO alpha is not modified by being administered at the beginning or end of the session (AU)