{'fraction_non_alphanumeric': 0.04332129963898917, 'fraction_numerical': 0.033393501805054154, 'mean_word_length': 4.836842105263158, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
VP19.04: Neurological outcomes after intrauterine transfusion for fetal anemia due to parvovirus B19 infection versus red blood cell alloimmunisation

Objectives: Pulsatile cardiac action is an energy consuming process. During pulse wave (PW) travel to the periphery, reflection back to the LV occurs. The novel wave dynamic equation [α] (Pahlevan 2014, Yigit 2016) provides evidence that energy consumption of pulsatile action is minimised when the time of return Tr to LV takes 15% 20% of the cardiac cycle T. Our objective was to assess pulsatile timing Tr/T in fetal circulation. Methods: To obtain Tr in the fetus by Doppler, hemodynamic modelling is required: PWs arrive twice at cerebral circulation: as a primary wave and 2nd after reflection and return (figure 1). A systolic shoulder (S) in MCA Doppler (MCA-S) represents this 2nd impulse to flow and the delay t corresponds to the time Tr needed to reflection and return (Mills 1970) Results: Recently Tr data of fetuses: A) with severe anemia (Hb < 7g/dl) and: B) after IUT (Tx coeff 0.03) were obtained by this method (Gonser 2018, Vonzun 2019):