Question

**Dimensional Analysis**

1. Order: phenytoin 0.2g cap po tid for a patient with seizures. Supply: phenytoin 100mg capsules. How many capsules will the nurse give per dose? ( record using a whole number )

2. Order: levothyroxine tabs 150 mcg po daily in AM. Supply: levothyroxine 0.15 mg scored tablets. How many tablets will the nurse give? (record using a whole number)

3. Order: meperidine HCI 12.5 mg IM stat X 1 for a patient in pain. Supply: meperidine HCI 75 mg/mL. How many mL will the nurse administer IM? ( Record using two decimal places)

4. Order: nitroprusside sodium at 0.4mcg/kg/min for a patient with severe hypertension. Patient weight is 198 pounds. Available: nitroprusside sodium 50 mg in 250 mL D5W. What is the IV pump rate? ( record using one decimal place)

Answer 1

1. Order: phenytoin 0.2g cap po tid for a patient with seizures. Supply: phenytoin 100mg capsules. How many capsules will the nurse give per dose? ( record using a whole number )

order - 0.2gm

supply - 100mg

administer - 1* 0.2 * 1000/100 = 2 cap

2 capsules should be given per dose

2. Order: levothyroxine tabs 150 mcg po daily in AM. Supply: levothyroxine 0.15 mg scored tablets. How many tablets will the nurse give? (record using a whole number)

order 150mcg

available 0.15mg = 0.15 * 1000 mcg

administer - 150/0.15 * 1000 = 1

1 tab is given

3. Order: meperidine HCI 12.5 mg IM stat X 1 for a patient in pain. Supply: meperidine HCI 75 mg/mL. How many mL will the nurse administer IM? ( Record using two decimal places)

order 12.5mg

supply - 75mg/ml

administer - 12.5 *1/75= 0.17ml

0.17ml of medicine should be administered

Order: nitroprusside sodium at 0.4mcg/kg/min for a patient with severe hypertension. Patient weight is 198 pounds. Available: nitroprusside sodium 50 mg in 250 mL D5W. What is the IV pump rate? ( record using one decimal place)

order 0.4mcg/kg/min

wieght - 198 pound - 90kg ------  

order 0.4 * 90 mcg/min = 36mcg/min

rate -------> 250 * 36/ 50*1000 = 0. 18ml/min