Author(s)

F. Boschetti

Abstract

A computer model of the extracorporeal circulation has been developed. The global model takes into account the hydraulic behaviour, die thermal behaviour, and the biochemical one. An urine output model has finally been derived from clinical data. The interactive characteristics of the computer model allow to change the main perfusion variables (pump flow rate, gas flow rate and composition, water temperature) and to simulate the administration of drugs (vasodilators or diuretics) in runtime mode and to observe the consequent patient response. Results are graphically presented on die personal computer monitor. Such a model is valuable for die training of perfusioiiists and for testing new devices. 1 Introduction Interaction mechanisms between die heart-lung machine and the patient are complex. Perfusionists learn by direct

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