Jm. Ara et al., COOPERATIVE STUDY OF NUTRITION IN HEMODIA LYSIS .4. HEMODIALYSIS TECHNIQUES AND NUTRITIONAL PARAMETERS, Nefrologia, 14, 1994, pp. 51-59
A cross sectional multicenter study was performed in order to evaluate
the relationship between nutritional status and different dialysis te
chniques, membranes and buffer of dialysate in 761 hemodialysis patien
ts. We found a high prevalence of malnutrition, defined by anthropomet
ric parameters (75,3 % of patients). We used, to stablish the nutritio
nal status in our patients, anthropometric, biochemical and urea kinet
ic parameters. The patients were grouped according to a) the technique
of dialysis-conventional Hemodialysis (HD) or hemodialfiltration (HDF
), b) membrane type (cellulosic or shyntetic) and c) the type of buffe
r of the dialysate (bicarbonate or acetate). Globally, patients on HDF
, synthetic membranes and dialysate with bicarbonate showed worst anth
ropometric and biochemical status. However, these patients had a highe
r Kt/V and PCRn. Furthemore, patients with a higher score of co-morbid
ity, older and with longer stay on dialysis, and consequently worst nu
trition status, were preferently treated with HDF, synthetic membranes
and dialysate of bicarbonate. Due to the characteristics of the study
, and the bias introduced in the selection of the patients, we were un
able to discriminate the relative influence of each factor in the nutr
itional status of the patients.