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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Correct Answer is C

Explanation

Choice A rationale

Increased BUN and serum creatinine are not typically symptoms of mononucleosis. These laboratory findings are more commonly associated with kidney dysfunction.

Choice B rationale

Ear pain and fever can be symptoms of many illnesses, including mononucleosis. However, they are not the most specific symptoms of this condition.

Choice C rationale

A positive Epstein-Barr virus test and malaise are common symptoms of mononucleosis. The Epstein-Barr virus is the most common cause of mononucleosis.

Choice D rationale

Elevated WBC and sedimentation rate can be seen in many inflammatory or infectious conditions, including mononucleosis. However, they are not the most specific symptoms of this condition.

A. Uterine atony B. Wound dehiscence C. Infection D. Hemorrhage

Correct Answer is A

Explanation

Choice A rationale

Uterine atony refers to a condition where the uterus fails to contract sufficiently during and after childbirth. This lack of contraction can lead to excessive bleeding, also known as postpartum hemorrhage. This is because the contractions of the uterus after delivery help to compress the blood vessels and prevent bleeding. Therefore, uterine atony can cause a patient to hemorrhage.

Choice B rationale

Wound dehiscence refers to a surgical complication where an incision reopens either internally or externally. It can cause pain, infection, and organ protrusion. However, it is not directly associated with hemorrhaging.

Choice C rationale

Infection refers to the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. While severe infections can lead to sepsis and disseminated intravascular coagulation, which can cause bleeding, they do not directly cause hemorrhaging.

Choice D rationale

Hemorrhage is a symptom, not a condition. It refers to excessive bleeding which can occur due to various conditions, including uterine atony.

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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.)

Nursing Test Bank

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Correct Answer is C

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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.)