Certified Neuroscience Registered Nurse (CNRN) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the CNRN Exam. Test your knowledge with our comprehensive multiple-choice questions and detailed explanations. Boost your confidence and improve your chances of a successful exam outcome!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the recommended duration of LMWH post THA or TKA?

5-7 days post-op
10-14 days post-op
2-3 weeks post-op
4-6 weeks post-op

The correct answer is: 10-14 days post-op

The recommended duration of low molecular weight heparin (LMWH) after total hip arthroplasty (THA) or total knee arthroplasty (TKA) is typically 10-14 days. This timeframe is considered optimal for reducing the risk of venous thromboembolism (VTE), which is a significant concern in patients undergoing these types of surgeries due to factors such as immobility and the surgical trauma itself. Administering LMWH for 10-14 days post-operatively allows for effective prophylaxis, as this duration provides sufficient anticoagulation while the patient is recovering and beginning to mobilize. It helps ensure that the thromboembolic risk is minimized when patients are at their most vulnerable, which is typically during the early stage of recovery when mobility may be limited. The other options, while they may reflect durations considered in different contexts or with different patient populations, do not align with the standard practice guidelines for THA or TKA. Each of the incorrect options either suggests a shorter duration, which may not provide adequate protection, or a longer duration, which may expose the patient unnecessarily to bleeding risks and complications associated with prolonged anticoagulation.