1A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 mL. How many ml should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["10"]
To give a patient cetirizine 5 mg PO, the nurse needs to measure the correct amount of liquid medicine. The medicine has a concentration of cetirizine 2.5 mg/5 mL, which means that every 5 mL of liquid contains 2.5 mg of cetirizine.
To find out how many mL of liquid are equivalent to 5 mg of cetirizine, the nurse can use a proportion:
2.5 mg / 5 mL = 5 mg / x mL
Cross-multiplying and solving for x, the nurse gets:
x = (5 mL x 5 mg) / 2.5 mg
x = 10 mL
Therefore, the nurse should administer 10 mL of liquid medicine to give the patient cetirizine 5 mg PO.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.7"]
Explanation
To calculate the dosage of morphine for a child, the nurse needs to convert the child's weight from pounds to kilograms and then multiply it by the prescribed dose per kilogram. The nurse also needs to divide the resulting amount by the concentration of the morphine injection to get the volume to be administered. The formula is:
Volume (mL) = (Weight (kg) x Dose (mg/kg)) / Concentration (mg/mL)
In this case, the child weighs 77 lb, which is equivalent to 35 kg (77 / 2.2 = 35). The prescribed dose is 0.2 mg/kg and the concentration of the morphine injection is 10 mg/mL. Therefore, the volume to be administered is:
Volume (mL) = (35 x 0.2) / 10
Volume (mL) = 0.7
The nurse should round the answer to the nearest tenth, which is 0.7 mL.
Correct Answer is ["D"]
Explanation
A. Frequency - This is essential to know how often the medication should be administered.
B. Strength of solution - The strength of the solution is crucial for calculating the correct dose based on the prescribed amount per kilogram of the child's weight.
C. Route - Knowing the route of administration is important to ensure the medication is given correctly. In this case, it's specified as a solution, suggesting it might be oral.
D. Brand name - While brand names can be relevant for certain medications, the generic name (dexamethasone, in this case) is usually sufficient for understanding and administering the medication.
E. Weight of child - This is crucial for calculating the correct dose since the prescription is based on a weight-dependent parameter (0.3 mg/kg).
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