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Sample fetal ECG recording in an IUGR fetus. (A) Shows the actual fetal ECG of an IUGR fetus at 34 weeks gestation. (B) Shows the averaged waveforms of the same interval. (C) Shows the Doppler wave signal recorded simultaneously by an attached continues Doppler transducer. (D) Shows how to measure the T wave, wherein Ao, opening of aortic valve; Ac, closing of Aortic valve.
