Effective blood flow and recirculation rates in internal jugular vein twin catheters: measurement by ultrasound velocity dilution

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation
M LeblancB Canaud

Abstract

The ultrasound dilution technology (Transonic Systems, Ithaca, NY) is a reliable method to assess blood flow (Qb) and recirculation rates (R) in vascular access during hemodialysis. However, the information available on these parameters for central venous dialysis catheters remains scarce at this point. Real Qb and R were evaluated in 33 well-functioning TwinCath (Medcomp, Harleysville, PA) inserted as mid- or long-term hemodialysis vascular access (mean duration since insertion, 270 +/- 253 days); all were implanted into the right internal jugular vein with their multiperforated distal tips located in the superior vena cava or right atrium. Several types of dialysis machines were used (Monitral and AK100, Hospal-Gambro, Lyon, France; 2008E and 4008E, Fresenius, Bad Homburg, Germany). Real Qb was measured with the ultrasound dilution method and compared with the set Qb (indicated by the dialysis machine); R, also evaluated by ultrasound dilution, was evaluated at various Qb with nonreversed lines; therefore, a total of 121 measures were performed. Arterial and venous pressures (PA and PV) were recorded simultaneously. The 33 measures at a set Qb of 200 mL/min showed a mean effective Qb of 210 +/- 18 mL/min and a mean R of 5.3 +...Continue Reading

Citations

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Aug 28, 2007·American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation·Eduardo LacsonRaymond M Hakim
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Apr 30, 2005·American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation·Rachel C CarsonJennifer M MacRae

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