Resistance of vascular access catheters for continuous renal replacement therapy: An ex vivo evaluation
T Naka, M Egi, R Bellomo, I Baldwin, N Fealy, L Wan
INTERNATIONAL JOURNAL OF ARTIFICIAL ORGANS | SAGE PUBLICATIONS LTD | Published : 2008
AIM: To assess the resistance posed by double-lumen vascular access dialysis catheters at low and high blood flow. DESIGN: Controlled ex vivo study Setting: ICU Laboratory of tertiary hospital. SUBJECTS: Eleven proprietary vascular access catheters for continuous renal replacement therapy. METHODS: Heparinized spent red cells diluted in polygeline solution were pumped using the Aquarius hemofiltration machine (Edwards Life Sciences, Sydney, NSW, Australia) and its standard circuit through several vascular access catheters. Blood flow was increased and then decreased in steps of 50 ml/min (50, 150, 200, 250 and 300 ml/min) while catheter outflow and inflow pressures were recorded. The pressur..View full abstract
The writing of this manuscript was supported by the Austin Hospital Anaesthesia and Intensive Care Trust Fund.