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- W4300654806 abstract "Factors affecting cardiac function in dialysis patients include arterial blood pressure, anaemia, intravascular volume, and the arteriovenous (a-v) access. Cardiac failure has been directly attributed to dialysis a-v access in several cases. The contribution of the a-v access to cardiac performance has been tested, in the past, by a short manual compression on the fistula, but this technique has obvious limitations. The present study examined prospectively the effect of dialysis a-v access on both cardiac function and various hormonal responses. Ten patients (age, mean ± SD, 59.6±12.3) with end-stage renal failure being prepared for chronic dialysis therapy were included. All patients underwent an echocardiographic study before and 2 weeks after the creation of the a-v access. Plasma atrial natriuretic peptide (ANP), plasma renin activity (PRA), and plasma aldosterone were measured at the same time periods. Following the creation of the a-v fistula or graft, shortening fraction increased by 15.8±6.3% (P<0.01), stroke volume increased by 21.9±5.3% (P<0.01), ejection fraction increased by 10.6±4.5% (P<0.02), cardiac output increased by 19.0±6.9% (P<0.02), and cardiac index increased by 18.3±7.1% (P=0.05). Systemic vascular resistance decreased by 23.5±7.1% (P<0.01). There was no change in blood pressure, heart rate, weight, haemoglobin or serum creatinine. ANP increased by 83.7±17.0% following the a-v access operation (P<0.001), PRA decreased by 41.2±10.0% (P<0.05), and plasma aldosterone did not change. None of the patients developed overt high-output cardiac failure. This study shows that at least in the short term following the creation of a dialysis a-v access, a mild state of volume overload develops, which is offset by the ‘unloading’ effect of the decreased peripheral vascular resistance; the latter is probably mediated by secretion of ANP in response to atrial stretching." @default.
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- W4300654806 date "1996-01-01" @default.
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- W4300654806 title "Haemodialysis arteriovenous access—a prospective haemodynamic evaluation" @default.
- W4300654806 doi "https://doi.org/10.1093/ndt/11.1.94" @default.
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