Catheter length exposed--evidence or opinions?

[DAVID LONGSETH]

The majority of the PICCs I place are Bard's Groshongs,so I have only two 
lengths to choose from. I always try to measure accurately enough to leave 
out more than 1.5cm (to accomodate the Biopatch under the dressing) and less 
than 5cm (to take advantage of the tapered end to plug the vein and the 
tract). Due to differences in patients' anatomies,it doesn't always work out 
that way but I try. Does anyone have any thoughts on the matter?
Thanks
David