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Dosage calculation pn maternal newborn assessment 3.2
Total Questions : 34
Showing 10 questions, Sign in for moreA nurse is assisting with the care of a client who is 24 hr postoperative following a cesarean birth. Which of the following prescriptions should the nurse clarify with the charge nurse?
A nurse is preparing to administer morphine 8mg IM to a client who is postpartum. Available is morphine injection 10 mg/mL. How many mL should the nurse plan to administer? (Round the answer to the nearest tenth. Use leading zero if it applies.)
Explanation
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
8 mg / Volume = 10 mg/mL
Step 3: Solve for the unknown volume:
Volume = 8 mg / 10 mg/mL
Step 4: Calculate the volume:
Volume = 0.8 mL
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.)
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
A nurse is reviewing a client's prescription for terbutaline 0.25 mg subcutaneous every 4 hr for 24 hr PRN more than four uterine contractions per hour. How should the nurse interpret this prescription?
A nurse is caring for a newborn who weighs 3,500 g. The nurse should record the newborn's weight as how many kg? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Newborn's weight in grams: 3,500 g
Conversion factor:
1 kg = 1,000 g
Step 1: Set up the conversion:
Weight in kg = Weight in g / 1,000 g/kg
Step 2: Substitute the value:
Weight in kg = 3,500 g / 1,000 g/kg
Step 3: Calculate the weight in kg:
Weight in kg = 3.5 kg
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.)
Explanation
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
A nurse is assisting with the care of a client who is experiencing labor pain and is preparing to administer nalbuphine 10 mg IM. Available is nalbuphine solution for injection 20 mg/mL. How many mL should the nurse plan to administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Desired dose of nalbuphine: 10 mg
Concentration of nalbuphine solution: 20 mg/mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
10 mg / Volume = 20 mg/mL
Step 3: Solve for the unknown volume:
Volume = 10 mg / 20 mg/mL
Step 4: Calculate the volume:
Volume = 0.5 mL
A nurse is preparing to administer enoxaparin 75 mg subcutaneous once daily to an antepartum client who has a clotting disorder. Available is enoxaparin injection 100 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 of enoxaparin: 75 mg
Concentration of enoxaparin injection: 100 mg/mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
75 mg / Volume = 100 mg/mL
Step 3: Solve for the unknown volume:
Volume = 75 mg / 100 mg/mL
Step 4: Calculate the volume:
Volume = 0.75 mL
A nurse is assisting with the care of a newborn who has a prescription for nystatin 100,000 units PO four times each day. Available is nystatin suspension 100.000 units/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
Given:
Desired dose of nystatin: 100,000 units
Concentration of nystatin suspension: 100,000 units/mL
Step 1: Set up the proportion:
Desired dose (units) / Volume to administer (mL) = Concentration (units/mL)
Step 2: Substitute the values:
100,000 units / Volume = 100,000 units/mL
Step 3: Solve for the unknown volume:
Volume = 100,000 units / 100,000 units/mL
Step 4: Calculate the volume:
Volume = 1 mL
A nurse is assisting with the care of a client who is postoperative following a cesarean birth and is at risk for deep vein thrombosis. The client has a prescription for heparin 5.000 units subcutaneously. Available is heparin 10,000 units/mL. After validating the dosage with another nurse, 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
Step 1: Set up the proportion:
Desired dose (units) / Volume to administer (mL) = Concentration (units/mL)
Step 2: Substitute the values:
5,000 units / Volume = 10,000 units/mL
Step 3: Solve for the unknown volume:
Volume = 5,000 units / 10,000 units/mL
Step 4: Calculate the volume:
Volume = 0.5 mL
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