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  • Title: Detection of fluid overload by plasma concentration of human atrial natriuretic peptide (h-ANP) in patients with renal failure.
    Author: Eisenhauer T, Talartschik J, Scheler F.
    Journal: Klin Wochenschr; 1986; 64 Suppl 6():68-72. PubMed ID: 2948067.
    Abstract:
    There are no reliable parameters for the detection of fluid overload in anuric patients. In 70 patients on regular haemodialysis (HD) or haemofiltration (HF) treatment, plasma ANP IR concentrations were determined by radioimmunoassay and compared to 43 controls with normal renal function. ANP IR levels were markedly elevated immediately before HD or HF (m 82 fmol/ml) compared to ANP IR plasma concentrations after HD or HF (m 42 fmol/ml) and to ANP IR levels of healthy controls (m 19 fmol/ml). ANP IR was detected in haemofiltrates and found to be eliminated by HF. During isovolemic HF, ANP IR levels remained constant suggesting that ANP synthesis is much higher than elimination by HF and that the decrease in circulating volume at the end of HF or HD is the main stimulus for a lower secretion rate of ANP. Elevated ANP IR levels at the end of HD/HF were found to be associated with fluid overload even without clinical or radiographic symptoms. Consistent weight reduction was followed by a decrease of ANP IR levels.
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