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

Behavioural Neurology
Francesco SisiniPaolo Zamboni

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.

References

Feb 1, 2003·Headache·Florian DoeppJosé M Valdueza
Oct 16, 2004·Cephalalgia : an International Journal of Headache·C-H ChouS-J Wang
Mar 6, 2007·Ultrasound in Medicine & Biology·Chih-Ping ChungHan-Hwa Hu
Nov 11, 2009·Ultrasound in Medicine & Biology·Chih-Ping ChungHan-Hwa Hu
Oct 1, 2011·Medical Hypotheses·Trevor W Tucker
Oct 3, 2013·Cleveland Clinic Journal of Medicine·John Michael S Chua ChiacoDavid J Fergusson
Aug 31, 2014·Journal of Psychiatric Research·Yu-Chien TsaoJaw-Ching Wu
Feb 24, 2015·Ultrasound in Medicine & Biology·Francesco SisiniPaolo Zamboni
Mar 12, 2015·Current Neurovascular Research·Bernhard H J Juurlink

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