Open AccessAccess flow measurements in hemodialysis patients
Author(s) -
Peter J. Bosman,
F. T. J. Boereboom,
Chris J.G. Bakker,
Willem P.Th.M. Mali,
B.C. Eikelboom,
P. J. Blankestijn,
H. A. Koomans
Publication year - 1996
Publication title -
journal of the american society of nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.451
H-Index - 279
eISSN - 1533-3450
pISSN - 1046-6673
DOI - 10.1681/asn.v76966
Subject(s) - coefficient of variation , ultrasound , hemodialysis , blood flow , medicine , nuclear medicine , volumetric flow rate , isotonic , flow (mathematics) , biomedical engineering , cardiology , surgery , chemistry , radiology , mathematics , chromatography , mechanics , physics , geometry
In this study, access flow in hemodialysis patients with bridge grafts was measured by a newly developed device. The technique is based on the measurement of changes in the ultrasound characteristics of blood. These changes were initiated by an injection of isotonic saline and measured in the tubes of the extra-corporeal circuit. The access flow rate (mean +/- standard variation) was 880 +/- 440 mL/min (range, 166 to 1740) (N = 46). The mean coefficient of variation was 13.4 +/- 6.8% (median, 13.0%; range 3.5 to 29.4%). Measurements correlated well (r = 0.91, N = 22, P < 0.001) with flow rates determined by magnetic resonance angiography and by a technique based on intra-access flow-pressure curves (r = 0.84, N = 14, P < 0.001). In conclusion, access flow can be measured easily, noninvasively, and reliably by the ultrasound dilution device.
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