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. Author manuscript; available in PMC: 2020 Jun 23.
Published in final edited form as: Acta Biomater. 2020 Feb 11;106:34–53. doi: 10.1016/j.actbio.2020.02.010

Table 1.

Overview of studies utilizing the kinematic growth theory to study G&R in the heart. Note that studies on organogenesis, e.g., [52,176] are not included. Fg is the inelastic growth deformation gradient; Me is the elastic Mandel stress [177] ; λ denote fiber stretch, ϑ denote growth multipliers; f0, s0, and n0 denote myocyte, sheet, and sheet-normal directions and E are strains in the respective direction; subscripts •crit denote physiologial limit levels, subscripts •hom denote homeostatic levels of the specific parameter; subscripts •e denote values with respect to the elastic deformation gradient Fe; k(•) are growth scaling functions.

Model Geometry and Material Driving Factor Growth Laws
Kroon et al. [38] Truncated ellipsoid; transversely isotropic [178] Deviation of myofiber strain s=Ef+11 from its homeostatic level shom = 0.13 Fg=[β(sshom)Δt+1]1/3I, where β is a rate constant
Göktepe et al. [39] Regularly shaped bi-ventricular model; isotropic material Deviation from strain for eccentric growth ϑ˙=k(ϑ)(1ϑλλcrit) Deviation from Mandel stress for concentric growth ϑ˙=k(ϑ)(tr(Me)pcrit) Eccentric growth: Fg = I + [ϑ − 1] f0f0 Concentric growth: Fg = I + [ϑ − 1] s0s0
Rausch et al. [44] Regularly shaped bi-ventricular model; orthotropic Holzapfel–Ogden [106] ϑ˙=k(ϑ)(tr(τ)pcrit), with τ the Kirchhoff stress tensor and pcrit the baseline pressure level Fg = I + [ϑ − 1] s0s0
Klepach et al. [46] Patient-specific LV; transversely isotropic Guccione [102] Same as Rausch et al. [44] Fg=ϑf0f0+1ϑ[If0f0]
Kerckhoffs et al. [47] Thick-walled truncated ellipsoid; transversely isotropic Guccione [102] Stimulus for axial fiber growth sl = max (Ef) − Ef,set, and radial fiber growth st = min (Ecross,max) − Ecross,set as differences between fiber strain Ef and maximum principal strain Ecross,max of the cross-sectional strain tensor: Ecross = [Es Esn; Esn En] and set-points •set Transversely isotropic, incremental growth tensor, described by sigmoids and dependent on 10 parameters
Lee et al. [43] Patient-specific LV; transversely isotropic Guccione [102] ϑ˙=k(ϑ,λe)(λeλhom) Fg = (ϑ − 1)f0f0 + I
Genet et al. [48] Four-chamber human heart model; orthotropic Guccione [102] ϑ˙=1τλλcrit, where τ is a scaling parameter in time and 〈〉 Macaulay brackets Eccentric growth: Fg = I + [ϑ − 1] f0f0 Concentric growth: Fg = ϑI + [1 − ϑ] f0f0
Witzenburg and Holmes [49] LV treated as thin-walled spherical pressure vessel; time-varying elastance compartmental model Same as Kerckhoffs et al. [47] Same as Kerckhoffs et al. [47]
Del Bianco et al. [50] Truncated ellipsoid; orthotropic Holzapfel–Ogden [106] Local growth increments ϑn between cycles n and n + 1: ϑn=1+k(i1n1ϑi)[tr(Me)ntr(Me)hom] Same as Göktepe et al. [39] for eccentric growth
Peirlinck et al. [51] Subject specific LV; orthotropic Holzapfel–Ogden [106] ϑ˙=1τλeλcrit,ϑ˙=0, where τ is a scaling parameter and 〈〉 Macaulay brackets Fg = ϑ [f0f0] + ϑ [If0f0]