Looking at the neck veins for hours together has been a favorite pastime of our cardiology ancestors.Thanks to those sharp intellect , that has led us to this height of cardiovascular revolution. Measuring JV pressure by itself was considered a big science. Putting a patient in 45 degrees , marking the sternal angle, identify the oscillating venous column, measuring the vertical distance etc . . .
Now in 2010 , with bedside hand-held echo one can rapidly rule out an elevated central venous pressure by imaging the jugular vein directly . Here is an article from American heart journal
http://www.ncbi.nlm.nih.gov/pubmed/20211304
Soon , your mobile will double up as ultra-portable echocardiogram
Read this related article in this blog .
Dr.S.Venkatesan MD 
May I use your illustration demonstrating JVP measurement for a pathophysiology text book I am writing for publication. Do you have any copyright restriction?
Hi
I do not know who owns the copy right of an image made out of random collections from Internet.
The concept and comment was mine. So , i think as long as no body objects it can be used.
But I can assure one thing .Using the contents from my web site is absolutely copy right free .
thank you for writing to me .
venkatesan