Sands J, Jabayc P, Miranda C
Delivered blood flow in cuffed central venous catheters
43rd Annual ASAIO Conference, Atlanta
ASAIO J
(Apr) 43:69 1997
It is difficult to achieve blood flow rates greater than 350-400
ml/min with cuffed central venous catheters. In this paper, Sands et
al compare flow in 3 different types of cuffed catheters. 28 patients
were studied. 13 had twin Tesio catheters, 9 had Bard-Hickman
catheters, and 6 had Vascaths. Flow was measured using the Transonics
device at pump settings of 250-400 ml/min during the first and last 30
min of a dialysis session.
The flow was substantially higher
in the Tesio catheters than with either of the double-lumen
counterparts, especially as the pump speed was increased above 300
ml/min. The Vascath came in 3rd place. All catheter tips were
documented to be at the level of the right atrium.
Comment: The results are consistent with those of Athirakul et al
from Steve Schwab's group, presented at ASN in 1996, although in the
latter study, flow with PermCaths and Tesio catheters were
statistically indistinguishable. In Schwab's study, however, flow was
imputed from blood pump settings and not actually measured using
ultrasound dilution. (John T. Daugirdas, M.D., University of
Illinois at Chicago)
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43rd Annual ASAIO Conference, Atlanta
Basic hemodialysis :
Vascular Access: venous