Flow measurements in dialysis shunts: lack of agreement between conventional Doppler, CVI‐Q, and ultrasound dilution | Zendy

Adriaan L Zanen | Zendy; Irwin M. Toonder | Zendy; E. Korten | Zendy; C.H.A. Wittens | Zendy; Philip P. N. M. Diderich | Zendy

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Flow measurements in dialysis shunts: lack of agreement between conventional Doppler, CVI‐Q, and ultrasound dilution

Author(s) -

Adriaan L Zanen,

Irwin M. Toonder,

E. Korten,

C.H.A. Wittens,

Philip P. N. M. Diderich

Publication year - 2001

Publication title -

nephrology dialysis transplantation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.654

H-Index - 168

eISSN - 1460-2385

pISSN - 0931-0509

DOI - 10.1093/ndt/16.2.395

Subject(s) - intraclass correlation , medicine , ultrasound , blood flow , limits of agreement , doppler effect , nuclear medicine , doppler ultrasound , dialysis , bland–altman plot , nuclear magnetic resonance , cardiology , surgery , radiology , physics , clinical psychology , astronomy , psychometrics

Measuring flow in dialysis shunts is recommended to predict imminent thrombosis. Multiple methods for measuring blood flow are in use. Numerous ultrasound protocols exist which determine volume flow using a conventional Doppler (CD) frequency shift analysis technique. All of these are subject to potentially large errors. Quantitative colour velocity index (CVI-Q) does not make use of the Doppler equation and is more precise in vitro. Ultrasound dilution (UD) measures access flow during dialysis in a non-operator-dependent way. The aim of the present study was to compare these three methods of measuring access flow in vivo for agreement with each other.

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