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A nurse is caring for a patient who has been prescribed warfarin [Coumadin] in addition to IV heparin therapy after experiencing an acute myocardial infarction (MI). The patient asks why both medications are necessary if they do similar things in preventing clots from forming in his body.
Which response by the nurse best explains why both medications are necessary? (Select all that apply.).
No explanation
Choice B is wrong because heparin and warfarin do not have a synergistic effect.
They work on different clotting factors, but they do not enhance each other’s effects.
Choice C is wrong because the route of administration is not relevant to the rationale for using both medications.
Heparin and warfarin can be given by different routes, but that does not explain why they are both necessary.
Choice D is wrong because warfarin does not help dissolve existing clots.
Warfarin prevents the synthesis of vitamin K-dependent clotting factors, but it does not break down clots that have already formed.
Heparin works faster than warfarin, so it is given until warfarin reaches an effective level in your blood.
Heparin has a shorter duration of action than warfarin, so it is easier to reverse if bleeding occurs.
Choice B is wrong because heparin and warfarin do not have a synergistic effect.
They work on different clotting factors, but they do not enhance each other’s effects.
Choice C is wrong because the route of administration is not relevant to the rationale for using both medications.
Heparin and warfarin can be given by different routes, but that does not explain why they are both necessary.
Choice D is wrong because warfarin does not help dissolve existing clots.
Warfarin prevents the synthesis of vitamin K-dependent clotting factors, but it does not break down clots that have already formed.