Recirculation: review, techniques for measurement and ability to predict hemoaccess stenosis before and after angioplasty.
The measurement of recirculation during two-needle hemodialysis has been shown to provide valuable information concerning distal hemoaccess stenosis and the loss of effective dialysis. Reference sources have suggested that levels of recirculation above 20% call for further investigation. We proposed a technique for routine recirculation measurement and studied 20 stable hemodialysis patients using this method. We found that all patients had recirculations of less than 10%. We also studied 2 patients with angiographically proven stenosis and found 1 patient with a recirculation of less than 20%. Routine recirculation testing provides valuable information about hemoaccess integrity and using our techniques, recirculation greater than 10% is an indication for further study.
Nardi
L
L
Renal Division, Mount Sinai School of Medicine, New York, N.Y.
Bosch
J
J
D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography; D000800:Angioplasty, Balloon; D001166:Arteriovenous Shunt, Surgical; D001775:Blood Circulation; D001806:Blood Urea Nitrogen; D003251:Constriction, Pathologic; D005260:Female; D006801:Humans; D008722:Methods; D006435:Renal Dialysis / Q000009:adverse effects*