Mechanical Function of Internal Jugular Vein Valve: Post-analysis of M-Mode Imaging under Cardiac Monitoring.

Because the internal jugular vein (IJV) valve is the only protective valve between the brain and heart, recent studies have focused on the dynamic behaviour of the valve and its importance in regulating the cerebral blood outflow pathway. However, the mechanism underlying valve opening and closure, as well as the normal opening time, has not been investigated before. The aim of the study described here was to investigate IJV physiology in healthy young adults by means of ultrasound imaging.

JEDI (jugular entrapment, dilated ventricles, intracranial hypertension) syndrome: a new clinical entity? A case report.

Patients with idiopathic intracranial hypertension are frequently obese women with normal/slit ventricles. Patients with high-pressure hydrocephalus, instead, present enlarged ventricles. We describe a 63-year-old woman with signs and symptoms of intracranial hypertension.

Cerebral Inflow and Outflow Discrepancies in Severe Sudden Sensorineural Hearing Loss.

The aim of this study is to evaluate whether cerebral inflow and outflow abnormalities, assessed by the means of a validated ultrasound model, could be associated with Sudden Sensorineural Hearing Loss (SSNHL). According to Clark, a total of 42 patients affected by severe SSNHL and 19 healthy volunteers matched by gender without any history of sudden hearing impairment have been included in this study. Patients and controls underwent EchocolorDoppler assessment of brain hemodynamics.

Altered velocity gradient in lower limb chronic venous disease.

Background: In physiology, velocity of the deep venous compartment is higher than the one in the saphenous compartment which is higher than the one in the tributaries. Considering that velocity variation is associated with changes in the pressure gradient, aim of the present study is to assess changes in venous kinetics in case of superficial chronic venous disease, so to provide further clues in venous drainage direction determination.

Methods: Venous ultrasound scanning was performed on 40 lower limbs of 28 chronic venous disease patients (C2-6Ep,As,Pr).

Comparison Between Duplex Ultrasound and Multigate Quality Doppler Profile Software in the Assessment of Lower Limb Perforating Vein Direction.

Objectives: The aim was to assess more accurately the net flow of the lower limb perforating veins (PVs).

Material And Methods: This was an observational prospective study. Two hundred and twenty one limbs with chronic venous disease (C1-6EpAs,pPr) of 193 patients underwent a duplex ultrasound (DUS).