Kobrin S M, Kriger F L, Raja R M
Albert Einstein Medical Center, Department of Medicine, Philadelphia, Pennsylvania 19141.
ASAIO Trans. 1989 Jul-Sep;35(3):508-10.
Conventional methods of measuring recirculation in hemodialysis access include a three site method performed during dialysis, and a two site technique conducted at the end of a hemodialysis treatment. This study describes a two site procedure performed at the beginning of a hemodialysis session. Blood samples are drawn from the arterial side of the hemodialysis access immediately prior to hemodialysis (AIPD), and from the same arterial line (A+5) and venous line (V+5) when maximal blood flows are reached 5 min after starting hemodialysis. Blood urea nitrogen (BUN) is measured in these samples, and the results entered into the formula AIPD - A+5/AIPD - V+5 X 100% to calculate the percent recirculation. Percent recirculation calculated by this method compared favorably with, and may hold several advantages over conventional techniques.
测量血液透析通路再循环的传统方法包括透析期间进行的三点法，以及血液透析治疗结束时进行的两点法。本研究描述了在血液透析疗程开始时进行的两点法。在血液透析前立即从血液透析通路的动脉侧采集血样（透析前动脉血），并在开始血液透析5分钟后达到最大血流量时，从同一动脉管路（A + 5）和静脉管路（V + 5）采集血样。测量这些样本中的血尿素氮（BUN），并将结果代入公式（透析前动脉血 - A + 5）/（透析前动脉血 - V + 5）×100%来计算再循环百分比。通过这种方法计算的再循环百分比与传统技术相比具有优势，并且可能具有几个优点。
