Figure 2

Typical middle cerebral artery flow waveform obtained by transcranial Doppler ultrasonography during extracorporeal membrane oxygenation. A, B, N group. C, D, P group. (A) The CBFV while IABP is turned off in severe cardiac failure. (B) The CBFV while ECMO was combined with IABP support in severe cardiac functional failure. (C) The CBEV while IABP is turned off in spontaneous cardiac function. (D) The CBFV while ECMO was combined with IABP support in spontaneous cardiac function.