Automatic Pressure Limited Exra-Corporeal Circulation “APLEC”

Abstract

For the purpose of safer and more practical physiological extracorporeal circulation, authors have devised a new system of extracorporeal circulation.
In this system, the arterial and venous flow are automatically regulated by the preset arterial and central venous pressure with the use of simple pressure-trigger mechanism instead of micro computer
We named this syatem “automatic pressure limited extra-corporeal circulation”[APLEC]
This method promises less complications such as air embolism, myocardial damage due to cardiac overdistension, when compared with the conventional bypass technic.
Improvement in physiological aspects are that volume of the pliming solution decreased, pressure gradient between SVC and IVC was eliminated and intravascular volume became constant by the “pressure limited mechanism”
APLEC satisfys simplification of circuit, the shortning of it and automatic control except presetting of arterial and central venous pressure, which have. to be judged by pump doctor.