Outcomes of Fluctuations in internal cerebral vein and centr
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Studies on the acute management of extremely low birth weight (ELBW) infants reveal a high incidence of intraventricular hemorrhage (IVH) in infants with high-grade internal cerebral vein perfusion waveform fluctuations. In this prospective observational study, researchers investigated the Doppler perfusion waveform fluctuations in the great cerebral vein, straight sinus, and internal cerebral veins of ELBW infants.

Researchers evaluated perfusion waveforms post-birth every 12 hours until 120 hours in 73 ELBW infants (less than 1000 g). Fluctuations were categorized into four patterns of increasing magnitude, Grade 0–3.

Results:
--The maximum grade of perfusion waveform fluctuations of the internal cerebral veins was 0, 1, 2, and 3 detected in 12, 38, 13, and 10 infants, respectively; that of the great cerebral vein was 0, 1, 2, and 3 detected in 5, 17, 20, and 31 infants, respectively; and that of the straight sinus was 0, 1, 2, and 3 detected in 1, 5, 17, and 50 infants, respectively.

--Only 1 of 803 simultaneous measurements of the Doppler perfusion waveforms showed stronger fluctuations of the peripheral vein than those of the central side veins. IVH was associated with high-grade fluctuations in the internal cerebral veins but not in the great cerebral vein or straight sinus.

In fact, most children had high-grade fluctuations in the broad cerebral vein and straight sinus, with lower-grade fluctuations in the inner cerebral vein, but those markers were not correlated with IVH. Only in the internal cerebral veins was IVH associated with high-grade fluctuations.

Source: https://onlinelibrary.wiley.com/doi/abs/10.1111/ped.14638?af=R
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