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Analysis of recirculation in single-needle haemodialysis

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Abstract

An analysis of recirculation in single-needle dialysis was performedin vitro. The percentage of recirculation was determined both as a function of fistula flow and of pulsatile arterial outflow, using water and blood as test liquids and using a single-head pump as well as a double-head pump. The most important factors responsible for recirculation were found to be (a) poor fistula flow compared with arterial outflow, (b) dead space and mixing in the needle and y-connectors and (c) compliance of the bloodlines in the dialyser circuit. It is concluded that an efficient, short, single-needle dialysis is not possible for patients with poor fistula flow. For other patients, the percentage of recirculation can be minimised by using a double-head pump and a compliant dialyser.

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Authors and Affiliations

  1. Department of Medical Physica, Free University, Amsterdam, The Netherlands

    J. H. Meijer, J. P. H. Reulen & H. Schneider

  2. Nephrological Unit, Academic Hospital of the Free University, Amsterdam, The Netherlands

    P. L. Oe & M. I. Koolen

Authors
  1. J. H. Meijer
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  2. J. P. H. Reulen
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  3. H. Schneider
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  4. P. L. Oe
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  5. M. I. Koolen
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Meijer, J.H., Reulen, J.P.H., Schneider, H. et al. Analysis of recirculation in single-needle haemodialysis. Med. Biol. Eng. Comput. 17, 578–582 (1979). https://doi.org/10.1007/BF02440902

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  • DOI: https://doi.org/10.1007/BF02440902

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