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 ["B","C","D"]
Explanation
Choice A rationale:
Polyuria, which is frequent or excessive urination, is not typically a symptom of hypoglycemia. It is more commonly associated with hyperglycemia, or high blood sugar levels.
Choice B rationale:
Sweating is indeed a common symptom of hypoglycemia. When blood sugar levels fall too low, the body may respond by sweating as it releases adrenaline in response to the hypoglycemic state.
Choice C rationale:
Tachycardia, or a fast heartbeat, is another common symptom of hypoglycemia. This is part of the body’s response to low blood sugar levels, as it releases adrenaline to try to raise these levels.
Choice D rationale:
Blurry vision can be a symptom of hypoglycemia. When blood sugar levels fall, it can affect the ability of the eyes to focus, leading to blurry vision.
Choice E rationale:
Polydipsia, or excessive thirst, is not typically a symptom of hypoglycemia. Like polyuria, it is more commonly associated with hyperglycemia.
Correct Answer is B
Explanation
Choice A rationale:
While it’s important for the client’s family to be aware of the disease and take precautions, they do not necessarily need to take medications to prevent infection. Tuberculosis (TB) is a contagious disease, but it typically requires close and prolonged contact to spread. Family members should be tested for TB, and if they test positive, then treatment would be necessary.
Choice B rationale:
This is the correct answer. A typical course of treatment for TB involves 6 to 9 months of consistent medication use. This is because TB bacteria die very slowly, and medications need to be taken for several months to ensure that all the bacteria are killed. If treatment is stopped too soon, some bacteria may survive and become resistant to the drugs.
Choice C rationale:
It’s not accurate to say that medications will need to be taken for the rest of the client’s life. While TB treatment is lengthy, it does not continue indefinitely. Once the full course of treatment is completed and the disease is cured, further medication is not typically necessary.
Choice D rationale:
The Mantoux test, also known as the tuberculin skin test, is used to determine whether a person has TB infection. However, the test can remain positive for a long time, even after successful treatment. Therefore, medications should not be taken until the Mantoux test is negative. Instead, the duration of treatment is determined by the healthcare provider based on various factors, including the patient’s response to the medication.
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