Transient Global Amnesia Linked to Impairment of Brain Venous Drainage: An Ultrasound Investigation

Frontiers in Neurology
Ke HanJiang Wu

Abstract

Background: Previous neuroimaging and ultrasound studies suggested that compression and stenosis of the internal jugular vein (IJV) in patients with transient global amnesia (TGA) may impair IJV drainage, while a patent IJV releases intracranial pressure caused by the Valsalva maneuver (VM). Methods: Seventy-nine TGA patients with complete ultrasound examination data during admission were recruited prospectively to evaluate IJV drainage, which included the time-averaged mean velocity, and the cross-sectional lumen area of the IJV at the vein's middle (J2) and distal (J3) segments and the cross-sectional area during a 10-s VM to test for any retrograde or anti-grade flow. Forty-five TGA patients and 45 age- and sex-matched control subjects underwent complete contrast-enhanced magnetic resonance (MR) venous studies, which included time-resolved imaging of contrast kinetics, contrast-enhanced axial T1-weighted MR imaging, and phase-contrast-based non-contrast enhanced magnetic resonance venography (MRV). Results: In those subjects with complete MRV studies, the flow volumes exhibited at both the J2 and J3 segments of the left IJV and left vertebral vein (VV) were significantly lower in the TGA patients than in the control subjects...Continue Reading

References

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Citations

Sep 6, 2020·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Vittorio GovoniElisa Fallica
Mar 7, 2021·Reviews in the Neurosciences·Ioannis LiampasEfthimios Dardiotis
Jun 4, 2021·Neuropsychiatric Disease and Treatment·Shunpo HeLiangyi Chen
Feb 4, 2021·Aging and Disease·Chaobo BaiRan Meng

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