Koku Universe Applied to Human Heart Design: Fabrication Parameters for 3D Bioprinting (v2 — Unit-Corrected)

Revised version (v2. 0) of KHDS v1. 0 with corrected unit definition for Vₘin. N is redefined as contractile pressure Pa = 16, 000 Pa (systolic LV pressure = 120 mmHg). D is redefined as myocardial stiffness Pa = 10, 000 Pa (Nagueh et al. JACC 2009; Fung 1993). V = N/D is dimensionless Pa/Pa. Vₕealthy = 16, 000/10, 000 = 1. 6 dimensionless. Vₘin = 1. 6 x (2. 5/5. 0) = 0. 80 dimensionless, corresponding to minimum cardiac output 2. 5 L/min. Inner resolution deltaᵣ = 7 um reframed as 5-year technology roadmap target (current best: 10 um stable). All other parameters unchanged: deltaᵣₒuter = 1 mm, tau = 0. 857 s.