Transient Hemodynamic Changes upon Changing a BCPA into a TCPC in Staged Fontan Operation: A Computational Model Study

Table 1

Default parameter values used in the BCPA circulation model under resting conditions.

Heart	𝐸ras=0.26	𝐸rad=0.36	𝐸las=0.5	𝐸lad=0.7	𝐸lvs=6.64	𝐸lvd=0.18
	𝑇0=0.67	𝑇vcp=0.246	𝑇vrp=0.147	𝑆ra=𝑃ra∗0.0005	𝑆la=𝑃la∗5𝐸−4	𝑆lv=𝑃lv∗5𝐸−4
Cardiac valves	𝐿mv=1.4𝐸−3	𝐵mv=8𝐸−5	𝑅mv=8𝐸−3	𝐿av=1.4𝐸−3	𝐵av=1.2𝐸−4	𝑅av=1.2𝐸−2
Pulmonary circulation	𝐶pt=0.144	𝐿pt_l=4𝐸−3	𝑅pt_l=1𝐸−3	𝐿pt_r=4𝐸−3	𝑅pt_r=1𝐸−3
	𝐿pua_l=6.7𝐸−3	𝑅pua_l=0.235	𝐶pua_l=0.217	𝐿puc_l=4𝐸−3	𝑅puc_l=0.173	𝐶puc_l=2.35
	𝐿puv_l=6.7𝐸−3	𝑅puv_l=0.103	𝐶puv_l=0.97	𝐿pua_r=6.7𝐸−3	𝑅pua_r=0.235	𝐶pua_r=0.217
	𝐿puc_r=4𝐸−3	𝑅puc_r=0.173	𝐶puc_r=2.35	𝐿puv_r=6.7𝐸−3	𝑅puv_r=0.103	𝐶puv_r=0.97
ASD	𝐿ASD=5𝐸−4	𝑅ASD=1𝐸−3
Aorta	𝐿ao_l=3𝐸−2	𝑅ao_l=6.5𝐸−2	𝐿ao_u=1.5𝐸−2	𝑅ao_u=0.15	𝐶ao=0.267
Vena cava	𝐿ivc=7.5𝐸−3	𝑅ivc=2𝐸−2	𝐶ivc=3.95	𝐿svc=3.8𝐸−3	𝑅svc=6.4𝐸−2	𝐶svc=0.54
Systemic circulation	𝐿art_l=1.5𝐸−2	𝑅art_l=4.22	𝐶art_l=0.13	𝐿cap_l=4.5𝐸−3	𝑅cap_l=0.32	𝐶cap_l=6𝐸−2
	𝐿ven_l=9𝐸−3	𝑅ven_l=6.5𝐸−2	𝐶ven_l=22.0	𝐿art_u=7.5𝐸−3	𝑅art_u=2.91	𝐶art_u=1.8𝐸−2
	𝐿cap_u=2.3𝐸−3	𝑅cap_u=0.75	𝐶cap_u=8.5𝐸−3	𝐿ven_u=4.5𝐸−3	𝑅ven_u=0.15	𝐶ven_u=3.0

Notation of parameters: 𝐸: elastance; 𝑆: viscoelastic coefficient; 𝑇: time; 𝑅: resistance; 𝐿: inertance; 𝐶: compliance; 𝐵: Bernoulli’s resistance. Please refer to Figure 1 for the locations of the parameters in the model. Units of parameters: 𝐸: mmHg·mL⁻¹; S: mmHg·s·mL⁻¹; T: s; R: mmHg·s·mL⁻¹; 𝐿: mmHg·s²·mL⁻¹; 𝐶: mL·mmHg⁻¹; 𝐵: mmHg·s²·mL⁻².