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P Calzavara

Publications and source records attributed to P Calzavara.

29 records · Page 2Linked to original sources
PubMed1988

Comparison between three mathematical models of KT/V.

In thirty anuric patients undergoing chronic hemodialysis the KT/V values obtained with the formula: (formula; see text) were compared with the values obtained with the following two formulae: (formula; see text) The results given by formulae B and C differed from those with formula A respectively by 12.81 +/- 11.98% and 10.38 +/- 3.64%. For routine determination of KT/V we suggest the use of formulae A and C as a means of establishing rapidly, in one step, whether the hemodialytic treatment examined is adequate.

Female↗
PubMed1985

Radionuclear determination of glomerular filtration rate and renal plasma flow to detect early decrease of renal function in insulin dependent diabetes.

To evaluate the role of renal haemodynamic factors in the pathophysiology of diabetic nephropathy, we determined by radionuclear techniques glomerular filtration rate (GFR) and renal plasma flow (RPF) in 18 patients affected by insulin dependent diabetes mellitus (IDDM) in good metabolic control, with normal blood pressure and plasma creatinine. GFR and RPF measured in the same patients after ten months correlated with proteinuria and duration of diabetes. Our finding of a significant correlation between the decline of RPF and duration of diabetes may support the haemodynamic hypothesis of progression of diabetic nephropathy.

Adolescent↗
PubMedDate not supplied

[Comparative clinical study between standard hemodialysis, PHF (HDF on-line) and PHF AF (HDF on-line acetate free)].

PURPOSE AND METHODS: In this study, three different techniques were compared in eight uremic patients on regular dialysis treatment: standard hemodialysis (HD), paired hemodiafiltration (PHF) and PHF acetate free (AF). We evaluated the Kt/V, the percentage reduction in Beta 2-microglobulin, the acid-base balance (blood samples were drawn pre-treatment and after 30, 60, 120 and 180 min, post-treatment and pre-treatment of the following session) and the acetate plasma concentration pre- and post-treatment. RESULTS: Between these treatments there were no significant differences in Kt/V and in urea reduction rate (URR). The percentage reduction in plasma Beta 2-microglobulin levels was significantly higher in PHF and in PHF AF than in standard HD. CONCLUSIONS: The correction of acidosis was not significantly different between standard HD and PHF, while it was significantly less effective in PHF AF. The post-dialysis plasma acetate concentration was significantly lower in PHF AF than in standard HD and in PHF with an improvement in cardiovascular (CV) stability and a reduction in oxidative stress.

Acetates↗
PubMedDate not supplied

[Mass transfer of magnesium in hemodialysis].

The rate of mass-transfer (MT) of magnesium during hemodialysis was studied in thirty-five patients with hypermagnesemia (Mg = 3.75 +/- 0.72 mg/dl) undergoing chronic hemodialysis. The aim of the study was to verify which is the best dialytical approach to remove the excess of magnesium. The concentration of Mg in the dialysate was of 1.82 mg/dl for all patients. MT was -0.51 +/- 0.36 g and no statistical difference was found between patients treated with cuprophan hollow fibers dialyzers, PAN and cuprophan plates. Mg MT is not correlated with dialysis duration (r = -0.23; p:ns), urea clearance (r = -0.08; p:ns), KT/V index (r = -0.03; p:ns), blood flow (r = -0.15; p:ns). In conclusion from our data, in agreement with other Authors, reduction of serum Mg levels is more convenient by obtained by a decrease in Mg concentration in the dialysate under 1.82 mg/dl, in order to increase the blood-dialysate concentration gradient.

Acrylic Resins↗
PubMedDate not supplied

[Plasma levels of atrial natriuretic peptide and its relationship with arterial blood pressure before and after peritoneal dialysate infusion].

The acute modifications of atrial natriuretic peptide (ANP) plasma levels due to intraperitoneal dialysate infusion and the relationship between ANP and arterial blood pressure were studied in 17 patients on continuous ambulatory peritoneal dialysis (CAPD). ANP plasma levels were 159.18 +/- 87.06 pg/ml 30' minutes after 2.000 ml of peritoneal dialysate filling (t = 2.55; p less than 0.02). There was no correlation between ANP and arterial blood pressure neither before (r = -0.10; p = n.s.), nor after intraperitoneal dialysate infusion (r = 0.05; p = n.s.).

Adult↗