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Influence of Pulsatile Catheter Pump Synchronization on Haemodynamic Variables: Numerical Simulation. (Contributo in atti di convegno)

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Influence of Pulsatile Catheter Pump Synchronization on Haemodynamic Variables: Numerical Simulation. (Contributo in atti di convegno) (literal)

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Fresiello L.; De Lazzari C.; Trivella M. G.; Di Molfetta A.; Ferrari G. (2010)
Influence of Pulsatile Catheter Pump Synchronization on Haemodynamic Variables: Numerical Simulation.
in 7th IASTED International Conference, Innsbruck, Austria, February 17-9
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Fresiello L.; De Lazzari C.; Trivella M. G.; Di Molfetta A.; Ferrari G. (literal)

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In: 7th IASTED International Conference (Innsbruck, Austria, 17-19 Febbraio 2010). Proceedings, pp. 1 - 5. BIOMED 2010, 2010. (literal)

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ABSTRACT: Severe cardiovascular diseases can be treated using left ventricular assist devices (LVAD). One of the possible LVADs is the Pulsatile Catheter (PUCA) pump that consists of a hydraulically or pneumatically driven membrane pump connected to a valved catheter. In this work a numerical model of the cardiocirculatory system and of the PUCA have been developed in order to study their interaction. In the numerical simulator a pathological condition of the left ventricle has been reproduced and successively the effects of the PUCA on the haemodynamic variables applied were studied. Different functioning modes were tested by changing the ratio between the pump frequency and the heart beat rate (HR) as 1:1, 1:2 or 1:3 and by introducing a delay time between the cardiac and the PUCA cycle. The performance of the pump was evaluated in terms of cardiac output, PUCA and coronary flows and it was studied for different HR values. Results show a good resemblance between the model and literat (literal)

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