Relationship between the flow through the Impella 2.5 pump and the pressure difference for different rotational speeds. The curves were obtained using the reported equation, with the values listed in Table
The curves in the figure are derived using the equation, and they are in good agreement with the experimental data collected during Impella 2.5 operation at pump speeds ranging from 25,000 to 51,000 rpm [Abiomed, Inc. Impella® Recover® LP 2.5 System-U Instruction for Use; Abiomed, Inc.: Danvers, MA, USA, 2006]