Key result
Noninvasive estimation models using dimensional analysis accurately predicted pump flow (R2=0.9848, average error 5.79%) and differential pressure (R2=0.997, average error 1.51%) in VentrAssist IRBPs.
Population
In vitro steady flow mock loop and two VentrAssist implantable rotary blood pumps (IRBPs)
Comparison
Flow and differential pressure estimate models… vs Directly measured pump flow and differential…
Design
Preclinical
Authors
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May support physiological control of rotary pumps; leaves open human validation of dimensional analysis models.
Effect estimate: R(2) = 0.9848 for flow; R(2) = 0.997 for pressure
Dimensional analysis provides highly accurate noninvasive estimation of average flow and differential pressure for implantable rotary blood pumps, which is crucial for physiological control.
Lim et al. (2008) studied Implantable rotary blood pumps (IRBPs). Noninvasive average flow and differential pressure estimation models using dimensional analysis vs. Measured pump flow and differential pressure was evaluated on Pump flow and differential pressure estimation accuracy (R(2) = 0.9848 for flow; R(2) = 0.997 for pressure). Noninvasive estimation models using dimensional analysis accurately predicted pump flow (R2=0.9848, average error 5.79%) and differential pressure (R2=0.997, average error 1.51%) in VentrAssist IRBPs.