The right pneumatic ventricular assist device (RVAD) can be connected "in serie" or "in parallel" mode. When RVAD is connected "in serie" ("in parallel") mode, it takes blood from the right ventricle (atrium) and ejects it into the pulmonary artery. In the reported configuration the cardiocirculatory network is composed by: systemic (pulmonary) arterial section modelled with a 4-WM (RLC elements) where Ras (Rap) is a variable peripheral resistance; systemic (pulmonary) venous section modelled by a variable resistace Rvs (a resistance Rvp) and a compliance Cvs (Cvp). HEART: the ejection and contraction phases of both ventricles are reproduced using the variable elastance model; the right (left) atrium is described as a linear capacity characterised by constant value of compliance Cra (Cla) and unstressed volume, i.e. the contractile activity of the atrium is neglected (see the Numerical Heart Model (1) section). The connection of the ventricles to the circulatory network is realised by means of valves (mitral (MV), aortic (AV), tricuspid (TV) and pulmonary (PV)), which are assumed to be ideal.

When RVAD is connected "in serie" ("in parallel") mode, it takes blood from the right ventricle (atrium) and ejects it into the pulmonary artery. In the reported configuration the cardiocirculatory network is composed by: systemic arterial section modelled with two RLC (Ras₁, Las₁, Cas₁ and Ras₂, Las₂ and Cas₂) elements and a peripheral resistance Rcbs (see systemic network 2); pulmonary arterial section reproduced with 4-MW element (Rap, Rcbp, Lap and Cap); systemic venous section modelled with two variable resistaces (Rvs₁ and Rvs₂) and a compliance Cvs; pulmonary venous comparment implemented with 3-WM element (Rvp₁, Rvp₂ and Cvp). HEART: the ejection and contraction phases of both ventricles are reproduced using the variable elastance model; the right (left) atrium is described as a linear capacity characterised by constant value of compliance Cra (Cla) and unstressed volume, i.e. the contractile activity of the atrium is neglected (see the Numerical Heart Model (1) section). The connection of the ventricles to the circulatory network is realised by means of valves (mitral (MV), aortic (AV), tricuspid (TV) and pulmonary (PV)), which are assumed to be ideal.

The electric analogue of the cardiovascular system (CVS) consists of left and right herat (described in Numerical Heart Model (1) section), systemic arterial section, splanchnic peripheral and venous circulation, extrasplanchnic peripheral and venous circulation, peripheral and venous circulation in active muscle compartment, systemic thoracic vein section, pulmonary arterial, peripheral and veins sections and coronary circulation. QiHEMO (QoHEMO) is the input (output) RVAD pump flow.