Abstract
Centrifugal pump (Bio-pump) as a continuous-flow pump was used in 68 patients who underwent open heart surgery to evaluate the change of hemodynamics and the influence on the hematology. Most of the adult patients whose perfusion time was about 3 hours; 43 of ischemic heart disease. 20 of heart valve disease and 5 of congenital heart disease.
Membrane oxygenators were used in all cases. Perfusion time was 185±98 min, and aortic clamp time was 98±40 min.
Right after the perfusion, plasma free Hb was 64±23mg/dl, and haptoglobin value was 72±36mg/dl. Decrease of flowrate during the centrifugal pump operation is observed when the resistance in the peripheral veins is increased, and the circulatory dynamics during the perfusion can be easily and precisely evaluated. In addition, the destruction is small. Based on this result, we believe that the centrifugal pump is effective as a continuous-flow pump during the perfusion.
