Pharmacology and the Nursing Process by Linda Lane Lilley: Practice Exam

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Why is it important not to interchange LMWH with heparin?

  1. LMWH is less effective

  2. They are structurally different

  3. They contain benzyl alcohol

  4. Heparin is less effective

The correct answer is: They contain benzyl alcohol

Interchanging LMWH (Low Molecular Weight Heparin) with heparin can be detrimental as they are structurally different and contain different components. While both are anticoagulants used to prevent blood clots, they have different mechanisms of action and dosages. Interchanging these medications can result in suboptimal effectiveness and potential adverse effects. It is important to use LMWH and heparin as prescribed and not interchange them without consulting a healthcare professional. Options A and D are incorrect as LMWH and heparin have been shown to have similar levels of effectiveness when used correctly. Option B is incorrect as the structural differences are the reason why they should not be interchanged.

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