How it Works
Try Naxlex NCLEX-RN (Free-Trial)

Unlike heparin, the anticoagulant activity of warfarin can take several

to reach its maximum effect.
Answer and Explanation

The Correct Answer is {"dropdown-group-1":"B"}

A. Minutes: This is too short a timeframe for warfarin's effect. It takes longer for the body's existing clotting factors to be depleted.

B. Days: This medication works by inhibiting the production of vitamin K-dependent clotting factors in the liver. As existing clotting factors are used up and new ones aren't produced as efficiently, it takes time for the anticoagulant effect to become significant.

C. Weeks: While the full effect might take some time (around 3-5 days), several weeks is an overestimation for most patients.

D. Hours: A few hours might show some initial effect, but it's not enough time for a substantial anticoagulant effect. It usually takes at least a day or two.


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is C

Explanation

  1. White Blood Cell Count (WBC): WBCs are part of the immune system and play a role in fighting infections. However, they are not directly involved in hemostasis or clot formation. WBCs do not adhere to the vessel wall during hemostasis.
  2. Activated Partial Thromboplastin Time (aPTT): aPTT measures the time it takes for blood to clot. It is primarily used to monitor heparin therapy, not warfarin. aPTT is not specific for warfarin monitoring.
  3. Prothrombin Time (PT): PT measures how quickly blood clots. It is used to monitor warfarin therapy and assess clotting factors. PT is essential for monitoring warfarin effectiveness.
  4. Platelet Count: Platelets are crucial for clot formation. Platelet count helps assess platelet function. Platelets play a direct role in hemostasis.

Correct Answer is D

Explanation

A. Most CAM therapies are not totally ineffective: While some CAM therapies may lack strong scientific evidence, it's not accurate to say they are all ineffective. Some CAM therapies may have benefits, but it's important to be aware of them to avoid interactions.

B. Not all CAM therapies are dangerous: Many CAM therapies are generally safe. However, some can interact with medications or have unforeseen side effects, so assessing use is crucial.

C. Additional treatment may still be needed: Even if a patient uses CAM, they might still require conventional medical treatment. Assessing CAM use helps ensure a complete picture of the patient's healthcare regimen.

D. CAM therapies could interact with prescription and OTC medications. Correct. The primary reason to assess CAM use is to identify potential interactions with medications, potentially improving patient safety and treatment effectiveness.

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register