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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 C

Explanation

Choice A rationale

Buttered whole wheat toast and coffee are not the best options for a patient with diarrhea. Whole wheat toast is high in fiber, which can exacerbate diarrhea. Coffee is a diuretic and can lead to further dehydration, which is a risk with diarrhea.

Choice B rationale

Granola is high in fiber and can worsen diarrhea. Strawberries, while a good source of vitamins, are also high in fiber. Tea can be dehydrating, which is not ideal when dealing with diarrhea.

Choice C rationale

Oatmeal is a bland and easily digestible food that can help to firm up the stool. Bananas are a good source of potassium and can help replace electrolytes that may be lost through diarrhea. Herbal tea is a non-caffeinated option that can help to soothe the digestive system.

Choice D rationale

Sausage is high in fat, which can worsen diarrhea. Eggs, while a good source of protein, can be hard to digest for some people and may not be the best choice during a bout of diarrhea. Milk is a common allergen and can cause digestive issues in people who are lactose intolerant.

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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