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

, -Friday, September 05, 1997 at 22:04:22 (PDT)