For most of us recovering from a DVT, and perhaps PTS, we're prescribed an amount of warfarin to produce an INR ranging typically between 2.0 and 3.0. This is commonly called a therapeutic dose. Does anyone have a view as to what exactly is therapeutic about this -- other than, perhaps, an educated medical guess that a person with this INR level has a reduced risk of hypercoagulation (and new DVT) without a significant risk of hypocoagulation -- or uncontrolled bleeding. I've never seen a discussion of how the target INR is otherwise "therapeutic", especially for a person on long-term or lifetime warfarin and would appreciate thoughts on this others may have.
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