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A patient weighing 132 lb is prescribed lorazepam 44 mcg/kg IV to be administered 20 minutes before a scheduled procedure.

The medication is available in a 2 mg/mL vial.

How many mL should the nurse administer? Round off to 2 d.p.

(This is a medical math nd does not require options.)
Answer and Explanation

The Correct Answer is ["1.32"]

Step 1 is to convert the patient’s weight from pounds to kilograms. There are approximately 2.2046 pounds in 1 kilogram. So, the patient’s weight in kilograms is 132 lb ÷ 2.2046 = 59.87 kg.

Step 2 is to calculate the total dose of lorazepam the patient should receive. The prescribed dose is 44 mcg/kg. So, the total dose in micrograms is 44 mcg/kg × 59.87 kg = 2634.28 mcg.

Step 3 is to convert the total dose from micrograms to milligrams. There are 1000 micrograms in 1 milligram. So, the total dose in milligrams is 2634.28 mcg ÷ 1000 = 2.63428 mg.

Step 4 is to calculate the volume of lorazepam solution to administer. The concentration of the solution is 2 mg/mL. So, the volume in milliliters is 2.63428 mg ÷ 2 mg/mL = 1.31714 mL. Therefore, the nurse should administer approximately 1.32 mL of the lorazepam solution, rounding to the nearest hundredth as required.


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Related Questions

Correct Answer is D

Explanation

Choice A rationale

Applying ice, then a warm compress to the IV site may help with pain or inflammation, but it does not address the potential problem with the IV site itself. If the client is experiencing pain and refuses a flush to assess the site, it could indicate that the IV site is compromised.

Choice B rationale

Checking the medical record for the date of IV insertion could provide useful information about how long the IV has been in place, but it does not directly address the client’s current complaint of pain at the IV site.

Choice C rationale

Redressing the IV site while checking for redness could help identify signs of infection or inflammation, but it does not address the client’s complaint of pain or their refusal to have the site flushed.

Choice D rationale

Discontinuing the current IV site and inserting a new one is the most appropriate action in this situation. If the client is experiencing pain at the IV site and refuses a flush to assess the site, it suggests that the current IV site may be compromised. Inserting a new IV ensures that the client can continue to receive their scheduled IV medication safely.

Correct Answer is ["D","E","F","G"]

Explanation

Based on the provided information, the following aspects of the assessment require urgent attention:

  • The client’s request for sleeping medication: This indicates that she is having trouble sleeping, which can affect her recovery.
  • The client’s distressing thoughts and memories about the house collapsing: This could be a sign of post-traumatic stress disorder (PTSD), which requires immediate attention and possibly referral to a mental health professional.
  • The client’s statement about being in a “funk”: This could indicate depression or another mental health issue, which should be addressed promptly.
  • The client’s preference for a quieter area of the unit: The noise by the nurses’ station is disturbing her rest, which is crucial for her recovery. Efforts should be made to accommodate her request if possible.

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