Mean CBF in the N group and the P group under ECMO with IABP. An IABP significantly decreased the mean CBF during non-pulsatile pressure ECMO support. An IABP significantly increased the mean CBF during pulsatile pressure ECMO support. The results are reported as the mean ± standard. *, p < 0.01 between the IABP support data and the data without IABP support.