What is the anticoagulation recommendation for a chronic DVT?

Simply having a chronic DVT is not an indication for anticoagulation. In general, acute provoked VTE requires a minimum of 3 months of anticoagulation. For an unprovoked VTE, there are scoring systems that guide towards limited duration vs long-term of anticoagulation. So it depends on where the fin...

Most important is if there is a new DVT or one that has not been fibrinolysed.