cytomegalovirus ureteritis interventions were performed. In the present study we modified dietary sodium intake. Sir, but did not change dialysate sodium.
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Dietary salt intake and blood pressure control in haemodialysis patients Sir, Krautzig et al. [1] reported a decrease in predialysis blood pressure in eight patients when dialysate sodium was reduced from 140 to 135 mmol/l, with a dietary salt restriction of no more than 6 g/day. In contrast, Kooman et al. [2] reported subsequently that predialysis blood pressure in six patients did not change significantly when dialysate sodium was reduced from 140 to 136 mmol/l, but no other dietary interventions were performed. In the present study we modified dietary sodium intake but did not change dialysate sodium. We compared patients at a midweek haemodialysis session on their usual salt intake with the same patients at a midweek haemodialysis session after having ingested a low-salt diet. Fifteen dialysis patients, eleven male and four female, were studied. Dialysis parameters and dry body-weight were kept constant. We measured predialytic plasma conductivity and intradialytic sodium mass transfer with non-invasive sensor (Diascan, Hospal ) by automatic conductivity measurement at the dialysate inlet and outlet. Mean intradialytic sodium mass transfer was 347±117 mmol with usual salt intake and 241±83 mmol with salt restriction, P
