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 D
Explanation
A. Spoon nails
Spoon nails, also known as koilonychia, refer to a concave or spoon-shaped deformity of the nails. This finding is associated with conditions such as iron deficiency anemia or certain systemic diseases, but it is not specifically associated with COPD.
B. Peripheral edema
Peripheral edema, or swelling of the extremities, is not a typical finding in COPD. It may occur in conditions such as heart failure, liver disease, or kidney disease, but it is not directly related to COPD unless there are comorbid conditions contributing to fluid retention.
C. Pleural friction rub
Pleural friction rub refers to a creaking or grating sound heard on auscultation of the lungs, typically during inspiration and expiration. It occurs when the inflamed pleural surfaces rub against each other. While pleural effusion (accumulation of fluid in the pleural space) may occur as a complication of COPD, pleural friction rub is not a typical finding in uncomplicated COPD.
D. Barrel chest
Barrel chest is a common finding in clients with COPD. It refers to an increased anterior-posterior diameter of the chest, giving it a rounded appearance similar to that of a barrel. This occurs due to hyperinflation of the lungs, which is characteristic of COPD, particularly in advanced stages. The hyperinflation leads to chronic air trapping and increased residual volume in the lungs, causing the chest to become enlarged and rounded.
Correct Answer is A
Explanation
A. 1 day after injection with a 10-mm area of redness and swelling:
This may suggest a positive reading, but induration size is the primary criterion for interpretation, not just redness and swelling.
B. 2 days after injection with a 5-mm area of redness and swelling:
Similar to option A, a 5-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. Again, without information on the size of the induration, we cannot determine if this reading is positive.
C. 4 days after injection with a 3-mm area of redness and swelling:
Once more, a 3-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. As with the previous options, the size of the induration is the critical factor for interpretation.
D. 5 days after injection with a 2-mm area of redness and swelling:
As with the other options, a 2-mm area of redness and swelling alone does not definitively indicate a positive TB skin test. The presence and size of induration are essential for accurate interpretation.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today