cap change policy

[Freda]

I have been working on Best Practices for our organization regarding 
VAD care.The issue of changing caps is under discussion. According to 
CDC rec's they should be changed every 72 hours, however our org and 
others' policy is to change them every 7 days.I cannot find any 
literature on what the 7 day policy is based on. We are using the 
CLC2000, but some client's come with non-positive pressure caps and 
the policy is the same for them.
If your org changed from q7days to q72 hours, what evidence was used 
to support the change?

Freda Seddon
Victorian Order of Nurses,
Peterborough, Ontario