hopefully it's not too late.... but don't worry about dosage tapering. just d/c the methylpred within a week and I think that's good. as for the ppx, just order enoxaparin. you run less of a risk of HIT w/ enox rather than doing straight heparin. and you gotta monitor PTT w/ regular heparin.... but I rather use heparin for a confirmed DVT. for SCDs it's something like compression stockings or something like that. If they already had a dvt or PE make sure you give warfarin and monitor PT PTT INR