Besarab A, Hall B, El-Ajel F, Deane C, Zasuwa G
The relation of brachial artery flow to access flow
Am Soc Nephrol
J Am Soc Nephrol (abstract)
(Nov) 6:483 1995
Access flow is difficult to measure by Color Doppler in the
access due to turbulence and luminal irregularities. Besarab et
al came up with the idea to measure flow in the brachial artery.
Because nutrient access flow is only 60 ml/min, any excess should
be due to access flow. They found a good correlation with the
two methods and good repeat validity.
Comment: Color Doppler measurements of access blood flow
are rapidly being rendered obsolete by new methods involving
injection of saline into the venous return or cooling of the
dialysate, and sensing this change by an appropriate sensor on
the dialyzer inflow line. Nevertheless, for those still doing
Doppler techniques, a brachial artery measure seems to be easier
and more reliable than trying to measure access flow directly.
(Daugirdas)
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Am Soc Nephrol
Basic hemodialysis :
Vascular Access: graft/fistula