Table 2 Characteristics of the pulmonary blood flow (PBF) waveform in fetuses before, during (at selected time points) and after in utero ventilation (IUV).

Peak systolic flow (mL/min)

189.5 ± 30.5

228.4 ± 42.2

179.3 ± 32.3

177.0 ± 37.3

189.0 ± 34.9

Post-systolic minimum flow (mL/min)

-78.6 ± 13.9^a

-32.5 ± 22.8^b

-68.8 ± 13.4^a

-80.8 ± 13.2^a

-75.4 ± 15.4^a

End-diastolic flow (mL/min)

-27.1 ± 4.4

-10.1 ± 13.9

-26.0 ± 6.5

-30.7 ± 7.2

-26.1 ± 0.3

Mean diastolic flow (mL/min)

-17.7 ± 4.4^a

18.4 ±2.2^b

-12.6 ± 3.7^a

-14.1 ± 3.0^a

-9.6 ± 5.1^a

Pulsatility index

1.4 ± 0.0^a

1.2 ± 0.1^b

1.1 ± 0.1^b

1.47 ± 0.0^a

1.40 ± 0.0^a

Pulse amplitude (mL/min)

207.8 ± 31.4

173.1 ± 37.2

188.4 ± 28.8

167.1 ± 34.1

213.1 ± 42.8