Surface Landmarks and C-length as Predictors of Depth of Right IJV Catheter Insertion: A TEE-Guided Study

"The right internal jugular vein will be cannulated under transesophageal echocardiographic (TEE) guidance in order to place the catheter tip in the mid-SVC.~The length of the catheter required to place the tip at the mid-SVC as guided by TEE will be regressed on the C-length or on the distance from the entry point to the surface point corresponding to the mid-SVC on the chest wall in order to obtain a predictive equation.~The accuracy of either equation will be assessed by estimation of the standard error of the estimate (SEest)."