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Assessment of a two-needle technique for the measurement of recirculation during hemodialysis

R A Sherman1, S S Levy

  • 1Department of Medicine UMDNJ-Robert Wood Johnson Medical School, New Brunswick 08903-0019.

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation
|July 1, 1991
PubMed

The definitive measurement of recirculation in a hemodialysis vascular access for hemodialysis requires a peripheral vein blood sample. A two-needle method that avoids this venipuncture by using an "arterial" line sample from the access under low-flow conditions has been recommended. However, this technique has never been assessed in patients with significant levels of recirculation. We compared this low-flow arterial (LFA) technique to the standard method of measuring recirculation in 15 consecutive patients with more than 15% recirculation (mean, 27.6%). We found that recirculation by this two-needle technique averaged 15.2% and that the technique was insufficiently sensitive to be of value in clinical practice.

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