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Ati med math 498l summer exam
Total Questions : 23
Showing 10 questions, Sign in for moreA nurse is preparing to administer diphenhydramine 30 mg IM stat to a client who is having an allergic reaction. Available is diphenhydramine 50 mg/1 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.)
Explanation
Desired dose = 30 mg.
Available concentration = 50 mg/1 mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 30 mg / 50 mg/mL
= 0.6 mL.
A nurse is caring for an adolescent client who has pneumonia and a prescription for cefpodoxime 5 mg/kg PO every 12 hr for 5 days. The client weighs 88 lb. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies). Do not use a trailing zero.)
Explanation
- Convert the client's weight from pounds (lb) to kilograms (kg).
Weight in kg = 88 lb / 2.2 lb/kg
= 40 kg.
- Calculate the desired dose per administration in milligrams (mg).
Desired dose per administration (mg) = Desired dose (mg/kg) × Weight (kg)
= 5 mg/kg × 40 kg
= 200 mg.
A nurse is preparing to administer lorazepam 1 mg PO at bedtime. The amount available is lorazepam 2 mg tablets. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose = 1 mg.
Available strength of each tablet = 2 mg/tablet.
- Calculate the number of tablets to administer.
Number of tablets = Desired dose (mg) / Available strength (mg/tablet)
= 1 mg / 2 mg/tablet
= 0.5 tablets.
A nurse is caring for a client who is to receive liquid medications via a gastrostomy tube. The client is prescribed phenytoin 250 mg. The amount available is phenytoin oral solution 25 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose = 250 mg.
Available concentration = 25 mg/5 mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / (Available concentration (mg) / Available volume (mL))
= 250 mg / (25 mg / 5 mL)
= 250 mg / 5 mg/mL
= 50 mL.
A nurse is preparing to administer valproic acid 400 mg PO bid for migraine headaches. Available is valproic acid 250 mg/5mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose per administration = 400 mg.
Available concentration = 250 mg/5 mL.
- Calculate the volume in milliliters (mL) to administer per dose.
Volume (mL) = Desired dose (mg) / (Available concentration (mg) / Available volume (mL))
= 400 mg / (250 mg / 5 mL)
= 400 mg / 50 mg/mL
= 8 mL.
A nurse is preparing to titrate morphine 6 mg via IV bolus to a client. The amount available is morphine 8 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose = 6 mg.
Available concentration = 8 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 6 mg / 8 mg/mL
= 0.75 mL.
A nurse is preparing to administer haloperidol 5 mg IM to a client. The amount available is haloperidol 20 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose = 5 mg.
Available concentration = 20 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
= 5 mg / 20 mg/mL
= 0.25 mL.
A nurse is preparing to administer phenytoin 75 mg PO every 6 hr. Available is phenytoin 25 mg/5mL. 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.)
Explanation
Desired dose = 75 mg.
Available concentration = 25 mg/5 mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / (Available concentration (mg) / Available volume (mL))
= 75 mg / (25 mg / 5 mL)
= 75 mg / 5 mg/mL
= 15 mL.
A nurse is caring for a client who is postoperative following an appendectomy and is prescribed D5 lactated Ringer's at 150 mL/hr by continuous IV infusion for 12 hr. The drop factor of the manual IV tubing is 20 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Infusion rate in mL/hr = 150 mL/hr.
Drop factor of the IV tubing = 20 gtt/mL.
- Calculate the infusion rate in gtt/min.
First, convert mL/hr to mL/min:
= 150 mL/hr / 60 min/hr
= 2.5 mL/min.
Then, multiply by the drop factor:
Flow rate (gtt/min) = Infusion rate (mL/min) × Drop factor (gtt/mL)
= 2.5 mL/min × 20 gtt/mL
= 50 gtt/min.
A nurse is caring for a client who was prescribed 840 mL of enteral nutrition to be administered via gastrostomy tube over 24 hr using an infusion pump. The nurse should set the infusion pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Total volume of enteral nutrition to be administered = 840 mL.
Total infusion time = 24 hr.
- Calculate the infusion rate in milliliters per hour (mL/hr).
Infusion rate (mL/hr) = Total volume (mL) / Total infusion time (hr)
= 840 mL / 24 hr
= 35 mL/hr.
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