d) Yes; use hirudin

Incorrect

Therapeutic interchange is the substitution one agent of different chemical make-up with another agent. This is often done for supposed cost savings. However, a therapeutic interchange program must have its outcomes measured to determine if the interchange proved to be safe, effective, and cost effective. This has not been clearly demonstrated with the LMWHs. Because each LMWH is unique and has its own unique dosing, one can not assume that you can simply use one product over the other.(8)

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