A nurse is planning to administer diphenhydramine 1.25 mg/kg IV to a school-age child who weighs 55 lb. Available is diphenhydramine 50 mg/mL. How many ml should the nurse administer?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.6"]
Rationale:
First, we need to convert the child's weight from pounds to kilograms. We can do this by dividing 55 by 2.2, which gives us 25 kg.
Next, we need to multiply the dose of diphenhydramine by the child's weight to get the total amount of medication needed. We can do this by multiplying 1.25 mg/kg by 25 kg, which gives us 31.25 mg.
Finally, we need to divide the total amount of medication by the concentration of the solution to get the volume to be administered. We can do this by dividing 31.25 mg by 50 mg/mL, which gives us 0.625 mL.
To round the answer to the nearest tenth, we look at the hundredths place and see that it is 5 or more, so we round up the tenths place by one. Therefore, the nurse should administer 0.6 mL of diphenhydramine IV to the child.
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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale:
A. Maintaining droplet precautions while the child is coughing and sneezing is appropriate because pertussis is primarily transmitted via respiratory droplets. Droplet precautions include wearing a surgical mask when within 3 feet of the patient to prevent droplet transmission.
B. Applying a face mask after entering the child's room is not necessary if droplet precautions are already being followed during periods of coughing and sneezing.
C. Wearing gloves when assisting the child to the bathroom is not directly related to preventing the spread of pertussis, which is primarily transmitted via respiratory droplets.
D. Airborne precautions with an N95 respirator are not indicated for pertussis, as it is not transmitted via airborne particles.
Correct Answer is ["A","B","D","F","G"]
Explanation
Rationale:
A. Cutting and filing the child's fingernails frequently can help prevent further damage from scratching and reduce the risk of infection.
B. Using a mild detergent for the child's laundry can help minimize irritation to the skin.
C. Pimecrolimus cream is a topical immunomodulator that may be used for atopic dermatitis, but the thick layer application is not typically recommended for children due to safety concerns.
D. Informing the guardian that the child will experience occasional flare-ups of the condition helps manage expectations and prepares them for potential recurrence.
E. Atopic dermatitis is not typically contagious, so the statement that the child's condition is contagious when lesions are present is inaccurate.
F. Applying gloves to the child's hands can prevent scratching and further damage to the skin.
G. Applying emollients to the child's skin after bathing helps maintain skin hydration and barrier function, reducing the severity of atopic dermatitis symptoms.
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