Abstract
A novel and simple autoblood transfusion system We have developed a novel roller pump-driven, closed circuit autoblood transfusion system to minimize intraoperative blood loss and transfusion volume. Using a powerful roller pump and a potent in-line blood filter (Auto Vent SVTM, Pall Biomedical Limited, New York), our system is able to promptly restore and transfuse a large amount of blood in an operative field. A side-line fluid container was used both for priming the circuit and for storing the blood from intraoperative bleeding. To evaluate the potency of our system, we examined its capacity for air venting and its flow-pressure relationship with a mock circuit and 30% glycerin solution. In the circuit flow ranging from 10ml/min to 2, 000ml/min, each air bubble was completely removed from the mock circuit by the blood filter. The flow-pressure relation ship of the system revealed that maximal flow maintained under 300mmHg of the circuit pressure was 270ml/min. Opening the fluid container to the circuit enabled the circuit flow to increase up to 750ml/min for a few minutes. We concluded that our system was safe and efficient for autoblood transfusion. Thus, this system is applicable for both elective vascular surgery and also for emergent cases or unexpected bleeding.
