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Total Peripheral Resistance (TPR) is the resistance of the arterial tree, defined as the ratio between the mean systemic pressure and the cardiac output. A lumped parameters model of the arterial tree with active and non linear peripheries was developed in order to show how mutual interactions between systemic and local responses characterize non-linear modulations of TPR. Numerical simulations showed...
A new vacuum powered tubular pump for mechanical circulatory support has been developed. The blood chamber is a tube made of highly elastic biocompatible polyurethane and placed into a rigid chamber. The filling of the blood chamber is achieved by means of vacuum avoiding the possibility of air embolism and stagnation points. Mechanical valves have been replaced by clip valves placed over the input...
L'etude compare chez le coronarien adulte, selon des criteres cliniques et biologiques deux types de pratique de CEC (circuit ouvert, circuit clos) et la chirurgie coronaire a coeur battant. Les progres de la prise en charge per CEC des patients avec la gestion des aspirations et la reduction de l'interface air/sang, comme le realise le circuit clos, doivent permettre de reduire l'ensemble des phenomenes...
The development of severe aorto-ilio-femoral atherosclerotic disease in a patient with a previous double transplantation, kidney and pancreas, is a major surgical challenge. The transplanted organs have to be protected from extensive ischemia during the vascular reconstructive procedure and achieve optimal revascularization. The surgical management of a complex case where regional extra-corporeal...
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