The nurse is providing care for a client at 32 weeks' gestation who started low-molecular heparin ...

The nurse is providing care for a client at 32 weeks' gestation who started low-molecular heparin injections after developing a deep vein thrombosis. The client asks the nurse, Why do I have to take a shot? Why can't I take the blood clot medicine that m
 
  A. Anything that is fat-soluble, including warfarin (Coumadin), is able to cross the placental barrier. Heparin is not fat-soluble so it doesn't cross the barrier well.
  B. The placenta is easily crossed by anything you take by mouth while you are pregnant, but not by things absorbed in other ways.
  C. Only water-soluble substances such as vitamins can cross the placental barrier, so you could take either medication, but heparin is cheaper.
  D. They are the same medication, but the shot is absorbed faster than the pill so the doctor wants you to take daily shots.