An adult client receives a prescription for diphenhydramine 15 mL PO every 12 hours PRN for pruritus. The bottle is labeled, "Diphenhydramine 12.5 mg/5 mL." What is the total daily dose in mg that the client receives? (Enter numerical value only.)
The Correct Answer is ["75"]
Dose per administration in milliliters = 15 mL.
Concentration of the medication = 12.5 mg/5 mL.
- Calculate the amount of medication in milligrams (mg) per administration.
Amount per administration (mg) = Dose per administration (mL) × (Concentration (mg) / Volume (mL))
= 15 mL × (12.5 mg / 5 mL)
= 15 mL × 2.5 mg/mL
= 37.5 mg.
- Determine the number of doses per day.
Doses are given every 12 hours, so Number of doses per day = 24 hours / 12 hours/dose
= 2 doses/day.
- Calculate the total daily dose in milligrams (mg).
Total daily dose (mg) = Amount per administration (mg) × Number of doses per day
= 37.5 mg × 2 doses
= 75 mg.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Heart rate 100 beats/minute: A compensatory increase in heart rate (tachycardia) is expected in orthostatic hypotension. It helps maintain cerebral perfusion when blood pools in the lower extremities after standing quickly.
B. Blood pressure 125/65 mm Hg: This BP shows a slight systolic increase, which is not typical after orthostatic stress. A decrease in BP, not an increase, would be expected if symptoms like dizziness are present.
C. Heart rate 70 beats/minute: A decreased heart rate is not physiologically expected when someone experiences postural hypotension. Bradycardia would worsen cerebral perfusion and is inconsistent with dizziness.
D. Blood pressure 115/70 mm Hg: This change is too minor to explain dizziness. In orthostatic hypotension, we usually expect a drop of ≥20 mm Hg systolic or ≥10 mm Hg diastolic after position change.
Correct Answer is ["A","C","E"]
Explanation
A. Drink between 8 to 10 cups (1.9 to 2.4 liters) of fluids daily: Staying hydrated is important, especially for a pregnant woman with gestational diabetes. Adequate fluid intake helps manage blood glucose levels and prevents dehydration.
B. Eliminate the bedtime snack if heartburn develops after eating: While heartburn is a common issue during pregnancy, it’s not specifically related to gestational diabetes. Instead of eliminating the bedtime snack, the client could be advised to choose lighter, non-acidic snacks.
C. Choose complex carbohydrates that are high in fiber content: Complex carbohydrates, such as whole grains, legumes, and vegetables, have a lower glycemic index compared to refined carbs. They are digested more slowly and help regulate blood sugar levels.
D. Increase the percentage of protein in the diet if anemia develops: If anemia develops, increasing iron-rich foods (not just protein) is essential. Iron-rich foods like leafy greens, red meat, and legumes should be emphasized, as protein alone may not address iron deficiencies.
E. Avoid foods high in refined sugars: Refined sugars cause rapid spikes in blood glucose levels, which can worsen gestational diabetes. It's important to limit these foods to help maintain stable blood sugar levels.
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