The physician orders an injection of dexamethasone (Decadron) 6mg IM for a patient.
The available stock is dexamethasone 4mg/1ml in a 5ml multidose vial.
How many mLs of this medication will the nurse prepare?
75 mLs
5 mLs
6 mLs
15 mLs
The Correct Answer is C
The correct answer is Choice C.
Let’s go through the calculation step by step:
Step 1: Identify the order and the available medication. The order is for dexamethasone (Decadron) 6mg IM. The available stock is dexamethasone 4mg/1ml in a 5ml multidose vial.
Step 2: Determine the amount of medication needed to fulfill the order. This is done by dividing the ordered amount by the concentration of the available medication.
So, we have:
Step 2 Calculation=Concentration of Available MedicationOrdered Amount Substituting the given values: Step 2 Calculation=4 mg/mL6 mg Step 3: Perform the calculation.
Step 3 Calculation=1.5 mL
So, the nurse will prepare 1.5 mL of this medication.
Now, let’s discuss the rationales for each choice:
Choice A rationale:
75 mLs is not the correct amount. This would be a significantly larger dose than ordered, which could lead to an overdose.
Choice B rationale:
5 mLs is not the correct amount. This would also be a larger dose than ordered, which could lead to an overdose.
Choice C rationale:
1.5 mLs is the correct amount. This is calculated by dividing the ordered dose (6 mg) by the concentration of the available medication (4 mg/mL).
Choice D rationale:
15 mLs is not the correct amount. This would be a significantly larger dose than ordered, which could lead to an overdose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Type 1 diabetes mellitus is a chronic medical condition that occurs when the pancreas, an organ in the abdomen, produces very little or no insulin. Insulin is a hormone that helps the body to use glucose for energy. Glucose is a sugar that comes, in large part, from foods we eat. Insulin allows glucose to enter cells in the body. Therefore, if a client with type 1 diabetes refuses breakfast and requests to sleep, it could lead to hypoglycemia, a condition characterized by abnormally low blood glucose levels. Hypoglycemia can cause symptoms such as weakness, sweating, confusion, and in severe cases, unconsciousness or seizures. It is a medical emergency and should be reported immediately.
Choice B rationale:
Trimming a toenail may seem like a simple task, but for a person with diabetes, it can lead to serious complications. Diabetes can cause nerve damage that leads to numbness in the feet, making it difficult for a person to feel a cut, blister, or sore. These injuries can become infected and lead to serious complications, such as the need for amputation. However, this situation is not as immediately life-threatening as hypoglycemia and does not need to be reported immediately.
Choice C rationale:
Dark yellow urine can be a sign of dehydration, which can be a concern for individuals with diabetes. However, it can also be a result of less serious causes such as certain medications, foods, or simply not drinking enough fluids. While it’s important for the AP to encourage the client to drink more fluids, this situation is not as immediately life-threatening as hypoglycemia.
Choice D rationale:
Dizziness when standing, also known as orthostatic hypotension, can be a side effect of some medications used to treat diabetes. It can also be a symptom of dehydration or other conditions. While it’s important for the AP to monitor the client’s symptoms and report any changes, this situation is not as immediately life-threatening as hypoglycemia
Correct Answer is D
Explanation
Choice A rationale:
Acyclovir is an antiviral medication used to treat infections caused by certain types of viruses. It is primarily used for the treatment of herpes simplex virus infections, chickenpox, and shingles. However, it is not typically used as an anti-HIV drug.
Choice B rationale:
Ribavirin is an antiviral medication used to treat hepatitis C and certain other viral infections. While it has broad-spectrum antiviral activity, it is not specifically used to prevent mother-to-child transmission of HIV.
Choice C rationale:
Foscarnet is an antiviral medication used to treat or prevent cytomegalovirus (CMV) retinitis in individuals with AIDS. It is also used to treat cold sores and genital herpes. However, it is not the first-line choice for preventing mother-to-child transmission of HIV.
Choice D rationale:
Zidovudine, also known as AZT, is an antiretroviral medication used to prevent and treat HIV/AIDS. It is generally safe for use during pregnancy and is commonly used to prevent mother-to-child transmission of HIV12. It works by inhibiting the reverse transcriptase enzyme, thereby blocking viral replication. The use of Zidovudine and other antiretroviral drugs in pregnant women with HIV has significantly reduced the rate of mother-to-child transmission of the virus.
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