The pediatric surgeons at Stanford University began this study
with a definitive design in 100 patients and
elicited Children's Mercy Hospitals and
Clinics' participation. The primary outcome variable is the
number of percutaneous attempts needed to access the central vein
In the ultrasound (US) group, the US probe will be used
intra-operatively to identify the location of the internal jugular
vein. Once the vein is centered under the probe, an 18-gauge needle
will be introduced with the help of the US probe.
In the landmark technique group, the procedure will be performed
in a similar manner except that the surgeon will use known anatomic
landmarks to decide where to obtain central venous access
instead of using the US probe.