Correlation of internal jugular vein, common carotid artery, femoral artery and femoral vein diameters with central venous pressure.

CVP and CCA diameters exhibited a high correlation. For detection of CVP, the ultrasonographic CCA diameter measurement can be used as an alternative noninvasive method which is easy to use and minimally affected by measurement errors of individuals and which has low learning curve compared with the other measurement methods.