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Blood recirculation in malfunctioning catheters for haemodialysis
Author(s) -
Crespo R.,
Rivero M.F.,
Contreras M.D.,
Martínez A.,
Labrador A.,
Jurado M.J.,
Casas R.
Publication year - 1999
Publication title -
edtna‐erca journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.381
H-Index - 27
eISSN - 1755-6686
pISSN - 1019-083X
DOI - 10.1111/j.1755-6686.1999.tb00012.x
Subject(s) - medicine , catheter , lumen (anatomy) , blood flow , surgery , hemodialysis , cardiology , anesthesia
Summary Venous catheters are increasingly used for chronic haemodialysis, with dual lumen catheters being the most commonly used as blood recirculation (REC%) is relatively low. The aim of this study was therefore to evaluate blood recirculation in dual lumen catheters, both well‐functioning and malfunctioning, with reversed lumens. In our study, blood recirculation in well‐functioning catheters with standard lumens is similar to that found in previous studies. However, when lumens are reversed, blood recirculation increases significantly (6.7 ± 4 vs 19 ± 11 %, p<0.001). REC% in malfunctioning catheters (10.8 ± 2%) was higher than normal function (p<0.05) but lower than reversed flow in normal catheters (p<0.01) Therefore, inadvertent reversal of lumens in a well‐functioning catheter increases REC% in a significant manner, thus worsening haemodialysis efficiency. We conclude that, in inflow failure catheters, lumens can be reversed because REC% is acceptable. However, inadvertent reversal of lumens in a well‐functioning catheter increases REC% to a level which may compromise the adequacy of haemodialysis.