Fig. 2.
Electrical analogue of systemic arterial section and IABP. The systemic compartment consists of aortic, thoracic and abdominal tract. The abdominal bed is divided in two parts modelled with RABD1, LABD1, CABD1 and RABD2, LABD2, CABD2 and Ras elements respectively. The aortic, thoracic and first abdominal tract is directly influenced by IABP activation. Qi (i=AT, TT, ABT1 and ABT2) represents the flow inside each compartment. RAT, LAT, and CAT (RTT, LTT, and CTT) reproduce the aortic (thoracic) bed. The compliances CIABP1, CIABP2 and CIABP3 and the resistances RIABP1, RIABP2 and RIABP3 with the generator PIABP allow simulating the effects of the intra-aortic counterpulsation.