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Paper Information

Journal:   AVICENNA JOURNAL OF CLINICAL MEDICINE (SCIENTIFIC JOURNAL OF HAMADAN UNIVERSITY OF MEDICAL SCIENCES AND HEALTH SERVICES)   Summer 2004 , Volume 11 , Number 2 (SN 32); Page(s) 15 To 19.
 
Paper: 

MEASURMENT OF ARTERIOVENOUS FISTULA RECIRCULATION IN HEMODIALYSIS PATIENTS

 
 
Author(s):  GHOLYAF M.*, KORDI A., LESANPEZESHKI M.
 
* Department of Internal Medicine, School of Medicine, Hamadan University of Medical Sciences & Health Services, Hamadan, Iran
 
Abstract: 

Hemodialysis access recirculation occurs when dialyzed blood returning through the venous needle reenters the extracorporeal circuit through the arterial needle rather than returning to the systemic circulation. It is important to meausre hemodialysis access recirculation for two reasons: The reentry of dialyzed blood into the extracorporeal circuite reduces solute concentration gradients across the dialysis membrane by mixing already dialyzed with undialyzed blood.
As a result, the efficiency of dialysis is reduced. High degrees of recirculation can lead to a significant discrepancy between the amount of hemodialysis prescribed (prescribed Kt/V urea) and the amount of hemodialysis delivdred (delivered Kt/V urea).
High degrees of access recirculation indicate the presence of access stenoses, the most common cause of access thrombosis. Prospective identification and treamtnet of access stenoses improves long-term access patency rate.

 
Keyword(s): ARTERIOVENOUS FISTULA, HEMODIALYSIS, RECIRCULATION
 
References: 
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