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Related Experiment Videos

Decrease in pulsatile flow in the internal carotid artery in fetal hydrocephalus.

S Degani1, R Lewinsky, I Shapiro

  • 1Department of Obstetrics and Gynecology, Haifa Medical Center (Rothschild), Faculty of Medicine, Technion-Israel Institute of Technology, Israel.

British Journal of Obstetrics and Gynaecology
|February 1, 1988
PubMed
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Ventriculomegaly in fetuses elevates internal carotid artery pulsatility. This index may help study brain injury mechanisms and guide intervention timing in hydrocephalus.

Area of Science:

  • Fetal Medicine
  • Neurology
  • Medical Imaging

Background:

  • Ventriculomegaly, an abnormal buildup of fluid in the brain's ventricles, is a common finding in fetal development.
  • Understanding its impact on cerebral blood flow is crucial for predicting neurological outcomes.
  • Internal carotid arteries are major suppliers of blood to the fetal brain.

Purpose of the Study:

  • To investigate the relationship between the severity of ventriculomegaly and pulsatile blood flow patterns in the fetal internal carotid arteries.
  • To assess the utility of Doppler ultrasound-derived pulsatility index as a marker for fetal brain injury in hydrocephalus.

Main Methods:

  • Doppler ultrasound examinations were performed on four fetuses diagnosed with hydrocephalus and varying degrees of ventriculomegaly.

Related Experiment Videos

  • Pulsatility index (PI) measurements were recorded in the internal carotid arteries of each fetus.
  • PI values were correlated with the degree of ventriculomegaly.

    • Main Results:

    • A progressive increase in the pulsatility index was observed in the internal carotid arteries.
    • The elevation in pulsatility index was directly proportional to the severity of the developing ventriculomegaly.
    • This suggests altered cerebral blood flow dynamics associated with increasing intraventricular pressure.

    Conclusions:

    • The pulsatility index in fetal internal carotid arteries is a sensitive indicator of ventriculomegaly progression.
    • This non-invasive Doppler ultrasound measurement may serve as a valuable tool for monitoring fetal brain development and injury.
    • It could aid in determining the optimal timing for therapeutic interventions in cases of fetal hydrocephalus.