A nurse is preparing to administer enoxaparin 0.75 mg/kg subcutaneously to a client who weighs 154 lb. The amount available is enoxaparin 60 mg/0.6 mL. How many mL should the nurse administer?(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.).

Choice A rationale:
(Potassium level) Lovastatin is a medication used to treat high cholesterol levels. While potassium levels are important to monitor for certain conditions, they are not directly related to the initiation of lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice B rationale:
(Hemoglobin level) Hemoglobin levels are important to assess for anemia or other blood disorders. However, they are not specifically required before starting lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice C rationale:
(Kidney function tests) While kidney function tests are essential for many medications to ensure proper excretion and avoid toxicity, they are not directly related to the initiation of lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice D rationale:
(Liver function tests) Liver function tests are crucial before starting lovastatin therapy. Lovastatin is metabolized in the liver, and it can potentially cause liver damage or abnormalities in liver enzymes. Monitoring liver function helps detect any pre-existing liver conditions and ensures the safe use of the medication. Therefore, this is the correct choice for diagnostic testing before starting the medication.

Choice A rationale:
Providing a continuous passive motion (CPM) device is not necessary for a client following a total hip arthroplasty. CPM devices are more commonly used after knee arthroplasty to improve joint mobility.
Choice B rationale:
Ensuring the client has an elevated toilet seat at home is important following a total hip arthroplasty. The elevated seat reduces the amount of hip flexion required during toileting, which helps prevent hip dislocation and strain on the surgical site.
Choice C rationale:
Providing a trapeze bar is not essential for a client following a total hip arthroplasty. Trapeze bars are typically used to assist with repositioning in bed for clients with limited mobility, but they are not specific to hip arthroplasty recovery.
Choice D rationale:
Providing a compression garment is not necessary after total hip arthroplasty. Compression garments are often used for conditions like venous insufficiency or to manage swelling, but they are not routinely used for hip arthroplasty recovery.