Order: Diphenhydramine 25mg Q4H
Available: Diphenhydramine 12.5mg/5mL
How much will you administer?
2 mL
10 mL
25mL
12.5 mL
The Correct Answer is B
First, we need to find out how many milligrams (mg) are in 1 milliliter (mL) of the available diphenhydramine solution:
12.5 mg/5 mL
To find out how many milligrams are in 1 mL, we divide the total milligrams by the total milliliters:
12.5 mg ÷ 5 mL = 2.5 mg/mL
Now that we know the concentration of diphenhydramine is 2.5 mg/mL, we can calculate the dose needed for the order of 25 mg:
25 mg ÷ 2.5 mg/mL = 10 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Liver function tests
This is the correct choice. Pyrazinamide, a medication used in the treatment of tuberculosis, is known to potentially cause hepatotoxicity, which refers to liver damage or dysfunction. Therefore, clients prescribed pyrazinamide should undergo regular monitoring of liver function tests to assess for any signs of liver injury or impairment. Liver function tests typically include measurements of various enzymes and proteins produced by the liver, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and bilirubin levels.
B. Gallbladder studies
Gallbladder studies are not typically indicated for clients taking pyrazinamide. While pyrazinamide can rarely cause hepatotoxicity, which may affect liver function, it is not known to specifically target or affect the gallbladder. Therefore, routine gallbladder studies are not necessary for clients taking pyrazinamide.
C. Thyroid function studies
Pyrazinamide is not known to directly affect thyroid function. Therefore, routine thyroid function studies are not indicated for clients taking pyrazinamide unless there are specific signs or symptoms suggesting thyroid dysfunction.
D. Blood glucose levels
Pyrazinamide is not known to directly affect blood glucose levels. Therefore, routine monitoring of blood glucose levels is not indicated for clients taking pyrazinamide unless there are specific reasons to suspect or monitor for diabetes mellitus or other conditions affecting blood glucose regulation.
Correct Answer is C
Explanation
A. Muscle twitching
Muscle twitching is not a typical manifestation of oxygen toxicity. Instead, muscle twitching may be indicative of other conditions such as electrolyte imbalances (e.g., hypocalcemia or hypomagnesemia), neuromuscular disorders, or overstimulation of the nervous system.
B. Metallic taste in mouth
A metallic taste in the mouth is not commonly associated with oxygen toxicity. Instead, a metallic taste in the mouth may occur as a side effect of certain medications, dental issues, or as a symptom of other medical conditions such as acid reflux or oral infections.
C. Facial flushing
Facial flushing is a characteristic finding in oxygen toxicity. When exposed to high levels of oxygen over an extended period, individuals may experience facial flushing due to the vasodilatory effects of oxygen on blood vessels. This dilation of blood vessels leads to increased blood flow to the face, resulting in flushing or reddening of the skin.
D. Periorbital edema
Periorbital edema, or swelling around the eyes, is not a typical manifestation of oxygen toxicity. Instead, periorbital edema may occur as a result of various other conditions such as allergies, sinusitis, or fluid retention. It is not directly related to exposure to high levels of oxygen.
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