The value of two-dimensional echocardiography and pulsed Doppler technique in facilitating percutaneous catheterization of the subclavian vein. 
We have found combined two-dimensional echocardiographic imaging and range-gated pulsed Doppler flow mapping to be very useful and accurate in identifying the location and course of the subclavian vein.  It can be efficiently utilized to minimize the incidence of iatrogenic complications during percutaneous central venous catheterization.  This is particularly relevant in patients who are predisposed to a high risk of complications from the procedure.