A nurse is assisting with the care of a client who is experiencing postpartum bleeding. The nurse is preparing to administer methylergonovine 0.4 mg PO. Available is methylergonovine 200 mcg tablets. How many tablets 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 ["2"]
1 mg = 1000 mcg
Prescribed dose: 0.4 mg Converted to mcg: 0.4 mg x 1000 = 400 mcg
Available tablets: 200 mcg each
Next, we divide the prescribed dose by the strength of the available tablets:
400 mcg / 200 mcg per tablet = 2 tablets
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2"]
Explanation
Given:
Desired dose of citalopram: 20 mg
Concentration of citalopram solution: 10 mg/5 mL
Conversion factor: 1 tsp = 5 mL
Step 1: Calculate the volume of citalopram solution needed:
Volume of citalopram solution (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume of citalopram solution (mL) = 20 mg / (10 mg / 5 mL)
Volume of citalopram solution (mL) = 20 mg / 2 mg/mL
Volume of citalopram solution (mL) = 10 mL
Step 2: Convert the volume to teaspoons:
Number of teaspoons = Volume of citalopram solution (mL) / Volume per teaspoon (mL/tsp)
Number of teaspoons = 10 mL / 5 mL/tsp
Number of teaspoons = 2 tsp
Correct Answer is ["0.25"]
Explanation
Given:
Desired dose of phytonadione: 0.5 mg
Concentration of phytonadione injection: 1 mg/0.5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
0.5 mg / Volume = 1 mg/0.5 mL
Step 3: Solve for the unknown volume:
Volume = 0.5 mg / (1 mg/0.5 mL)
Step 4: Calculate the volume:
Volume = 0.25 mL
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