Premium
Blood urea sampling methods
Author(s) -
Peter Kerr,
Vlado Perkovic,
J. J. B. Petrie,
John Agar,
Alex Disney
Publication year - 2005
Publication title -
nephrology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 61
eISSN - 1440-1797
pISSN - 1320-5358
DOI - 10.1111/j.1440-1797.2005.00464_2.x
Subject(s) - citation , medicine , sampling (signal processing) , information retrieval , world wide web , library science , computer science , filter (signal processing) , computer vision
• Preand post-dialysis samples for urea measurement must be drawn at the same midweek treatment. • The pre-dialysis sample should be drawn from the arterial needle without saline or heparin contamination. If there is a suggestion that the blood is contaminated, first withdraw 10 mL of blood before taking the sample (e.g. central venous catheter). • It is suggested that the slow flow/stop pump sampling technique (described below) be used where possible to provide uniformity across dialysis units. • The post-dialysis sample should be drawn from the arterial line port or arterial needle at 20 seconds after initiating slow (or zero) blood pump flow with attention to accuracy of timing (K/DOQI 2001, Guideline 8, Haemodialysis Adequacy). The 2–3 minute post-dialysis sampling practice is an acceptable alternative. Unit practice should be consistent, documented, and compared with standards with similar methodology.