A nurse is preparing to administer diphenhydramine 40 mg IM to a client who has allergies. Available is diphenhydramine injection 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 ["0.8"]
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
40 mg / Volume = 50 mg/mL
Step 3: Solve for the unknown volume:
Volume = 40 mg / 50 mg/mL
Step 4: Calculate the volume:
Volume = 0.8 mL
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
40 mg / Volume = 50 mg/mL
Step 3: Solve for the unknown volume:
Volume = 40 mg / 50 mg/mL
Step 4: Calculate the volume:
Volume = 0.8 mL
Correct Answer is ["100"]
Explanation
Given:
Total volume to be infused: 50 mL
Infusion time: 30 minutes
Step 1: Convert infusion time to hours:
Infusion time (hr) = 30 min / 60 min/hr
Infusion time (hr) = 0.5 hr
Step 2: Calculate the infusion rate:
Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr)
Step 3: Substitute the values:
Infusion rate (mL/hr) = 50 mL / 0.5 hr
Step 4: Calculate the infusion rate:
Infusion rate (mL/hr) = 100 mL/hr
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