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Nefrología (Madrid)

versión On-line ISSN 1989-2284versión impresa ISSN 0211-6995

Resumen

BORREGO-HINOJOSA, Josefa et al. Treatment by long haemodialysis sessions with high cut-off filters in myeloma cast nephropathy: our experience. Nefrología (Madr.) [online]. 2013, vol.33, n.4, pp.515-523. ISSN 1989-2284.  https://dx.doi.org/10.3265/Nefrologia.pre2013.Feb.11932.

Multiple myeloma (MM) is the uncontrolled proliferation of plasma cells with variable amounts of production of immunoglobulin or their chains. Acute renal failure can be a symptom of MM, and it is sometimes their presentation form. Circulating free light chains (FLC) could led to renal failure by intratubular precipitation of themselves causing a cast nephropathy. Myeloma´s treatment, an adequate hydration and FLC´s elimination by aphaeresis treatments are currently eligible therapy for this entity. Several aphaeresis techniques have been tried to eliminate the FLC being long-term hemodialysis with filters to remove these light chains (High Cut-Off filters). This treatment is postulated as the most effective treatment for myeloma nephropathy. Methods: We report 5 cases of myeloma nephropathy: three of them with cast nephropathy (CN) diagnosed by renal biopsy and another two with high probability of NC (FLC levels >500mg/L). All of them were treated by hemodialysis with membrane high Cut-Off. The five patients had had an acute renal failure; in four of them need replacement renal therapy. The fifth patient only had an advanced renal failure. In all patients, FLC levels were very high. All patients received specific treatment for myeloma in addiction on hemodialysis high Cut-Off until the FLC levels were <500mg/ L. Results: Four of the five patients recovered renal function, being independent of dialysis. The evolution time of myeloma since the first symptoms appeared was variable (1-6 months). The number of treatment sessions ranged from 8-16. The patient whose evolution time was the longest one required more sessions and did not recovered the renal function. Conclusions: Length hemodialysis with filters high cut-off plus specific myeloma chemotherapy seems to be an effective treatment in acute renal failure due to cast myeloma. The early initiation of treatment could be an important factor for the response.

Palabras clave : Multiple myeloma; Cast nephropathy; Acute renal failure; High cut-off haemodialysis.

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