Abstract
1mm and 2mm in diameter silastic capillaries were used to construct the membrane oxygenator.
The surface area was 0.68 and 0.56m2 respectively. Each capillary was held with a medical grade adhesive so tightly enough to make a capillary bundle.
These bundles were placed into a polycarbonate cylinder 5cm in diameter, 50cm in length. Partial bypass was performed between the right atrium and femoral artery with this membrane oxygenator, with flow rate of 80-330ml/min, oxygen flow rate 5.0, 7.5, 10.0l/min.
Oxygen up-take, PO2, PCO2, oxygen saturation and other parameters were compared in these two oxygenators.
The data were excellent in the 1mm diameter capillary bundle oxygenator. as follows (O2 flow: 10.0l/min):
Oxygen uptake: 11.1-41.1ml/min·m2
PO2: arterial side 82-174mmHg
venous side 50-56mmHg
Difference of arterio venous oxygen saturation: 40.6-49.7%
