Fig. 2

The scatter plots demonstrate the MCA-PI of total 56 fetuses during a standard 3-phase protocol: room air, MH and a recovery phase. MCA-PI did not differ with MH in the normal foetuses (n = 28, p > 0.05). Of the 28 foetuses with borderline small left hearts, MCA remained unchanged in the twelve foetuses that were younger than 28 weeks GA (a, p > 0.05) and increased significantly in the sisteen foetuses that were older than 28 weeks GA (b, p = 0.02) using the Games-Howell post hoc test for multiple comparisons after one-way analysis of variance. * Statistically significant change between the baseline and MH values in the foetuses with borderline small left hearts