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.)
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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Keeping the infant home from daycare for the next two days after vaccination is not necessary unless the child is showing signs of serious side effects, which are rare. Most vaccines have mild side effects such as soreness at the injection site or a mild fever, which should not interfere with the child’s daily activities.
Choice B rationale
Applying a cool, damp cloth or a cool pack to the injection site can help reduce redness, soreness, and/or swelling. This is a common practice recommended by healthcare professionals to alleviate discomfort after vaccination.
Choice C rationale
It is not recommended to administer aspirin to children due to the risk of Reye’s syndrome, a rare but serious condition that can affect the liver and brain. Instead, if the child is uncomfortable or has a fever, parents can consult with a healthcare provider about giving a non-aspirin pain reliever.
Choice D rationale
While any level of fever after vaccination should be monitored, it is not always serious and should not cause panic. Fevers are a common side effect of vaccinations and are usually a sign that the body is building protection against the virus or bacteria in the vaccine. However, if a high fever persists or the child shows signs of an allergic reaction, parents should contact a healthcare provider immediately.
Correct Answer is ["A","B","E"]
Explanation
E.
Choice A rationale
Removing resuscitation equipment from the room is a standard practice before allowing family members to view the body after an unsuccessful resuscitation. This helps to create a more peaceful and less distressing environment for the family. It also respects the dignity of the deceased and allows the family to focus on their loved one, rather than the medical interventions that were attempted.
Choice B rationale
Placing a small pillow under the head is a common practice in preparing the body for viewing by the family. This helps to position the body in a natural and peaceful manner, which can be comforting for the family. It also respects the dignity of the deceased.
Choice E rationale
Gently closing the eyes is another common practice in preparing the body for viewing by the family. This helps to give the appearance of peaceful rest, which can be comforting for the family. It also respects the dignity of the deceased.
Choice C rationale
Taking out dentures and placing them in a labeled cup is not a standard practice in preparing the body for viewing by the family. Dentures, if present, are usually left in place to maintain the natural appearance of the face.
Choice D rationale
Applying a body shroud is not a common practice in preparing the body for viewing by the family. The use of a body shroud may vary based on cultural or religious preferences, but it is not a standard procedure in many healthcare settings.
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