A Client Is at 12 Weeks' Gestation with Her First

question 13

Multiple Choice

A client is at 12 weeks' gestation with her first baby.She has cardiac disease,class III.She states that she had been taking sodium warfarin (Coumadin) ,but her physician changed her to heparin.She asks the nurse why this was done.The nurse's response should be:

• A)"Heparin may be given by mouth,while Coumadin must be injected."
• B)"Heparin is safer because it does not cross the placenta."
• C)"They are the same drug,but heparin is less expensive."
• D)"Coumadin interferes with iron absorption in the intestines."

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Definitions:

Free Radical

An atom, molecule, or ion that has an unpaired valence electron, making it highly reactive and prone to participating in chemical reactions.

Chlorination

The process of adding chlorine to water or organic molecules, either for disinfection purposes or to introduce chlorine atoms into molecules for chemical synthesis.

Propagation Step

A part of a chain reaction where intermediates react with the original reactants to produce more intermediates and products, continually propagating the reaction.

Propagation Steps

Sequences of reactions where reactive intermediates react to form products and new intermediates in a chain reaction mechanism.