Germain M, Steuer R, Miller D, Mulhern J, O'Shea M, Braden G
Simplified accurate measurement of access recirculation with an
in-line hematocrit device
Am Soc Nephrol
J Am Soc Nephrol (abstract)
(Nov) 6:489 1995
Measuring access recirculation should soon be quite easy with the
variety of new methods being developed. In this paper, the
optical hematocrit method is described. A hematocrit sensor on
the arterial line is perturbed by a venous saline injection. If
there is an early arterial peak, this signifies access
recirculation. Not surprisingly, in 46 patients, the correlation
between in-line hematocrit monitoring with saline dilution and
urea methods of measuring recirculation was quite high; 7 of 46
patients had recirc > 20% by both methods, In the remainder
recirculation was < 10%.
Comment:
The in-line hematocrit sensing technology is being incorporated
in the B. Braun dialysis machine line.
(Daugirdas)
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