Ordered: Heparin Infusion 1000 Units Per Hour

Ordered: heparin infusion 1000 units per hour
Available: heparin 20,000 units in 1000 mL 0.9 NaCl solution
Agency policy requires that heparin be administered with an infusion pump.
IV flow rate the nurse should set on infusion pump:
A)DA equation:
B)Evaluation:
C)Which antidote is used for heparin overdose: vitamin K or protamine sulfate?
D)What are the general SDR guidelines, in units per 24 hours, for IV heparin?