The Oscillating Component of the Internal Jugular Vein Flow: The Overlooked Element of Cerebral Circulation.

Abstract:

:The jugular venous pulse (JVP) provides valuable information about cardiac haemodynamics and filling pressures and is an indirect estimate of the central venous pressure (CVP). Recently it has been proven that JVP can be obtained by measuring the cross-sectional area (CSA) of the IJV on each sonogram of an ultrasound B-mode sonogram sequence. It has also been proven that during its pulsation the IJV is distended and hence that the pressure gradient drives the IJV haemodynamics. If this is true, then it will imply the following: (i) the blood velocity in the IJV is a periodic function of the time with period equal to the cardiac period and (ii) the instantaneous blood velocity is given by a time function that can be derived from a flow-dynamics theory that uses the instantaneous pressure gradient as a parameter. The aim of the present study is to confirm the hypothesis that JVP regulates the IJV blood flow and that pressure waves are transmitted from the heart toward the brain through the IJV wall.

journal_name

Behav Neurol

journal_title

Behavioural neurology

authors

Sisini F,Toro E,Gambaccini M,Zamboni P

doi

10.1155/2015/170756

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

170756

eissn

0953-4180

issn

1875-8584

journal_volume

2015

pub_type

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