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A nurse is preparing to administer morphine 8 mg IV intermittent bolus to a client. The amount available is morphine 10 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.)
This question is an excerpt from Nurse Dive's nursing test bank - RN VATI Pharmacology S 2019 Proctored Exam. Take the full exam now
Full Explanation
To calculate the amount of morphine to administer, we can use the following formula:
Amount of medication (mL) = Desired dose (mg) / Concentration (mg/mL)
In this case, the desired dose is 8 mg and the concentration is 10 mg/mL.
Amount of medication (mL) = 8 mg / 10 mg/mL
Amount of medication (mL) = 0.8 mL
Therefore, the nurse should administer 0.8 mL of morphine.
Similar Questions
A nurse is preparing to administer ampicillin/sulbactam 15 g via intermittent IV bolus, Available is ampicillin-sulbactam 1.5 g in 0.9% sodium chloride 100 mL to infuse over 30 min. The nurse should set the IV infusion pump to deliver how many mL/h?
(Round the answer to the nearest whole number. Use a leading zero if it applies in not use a trailing zero)
Full Explanation
To determine the infusion rate in mL/h, we need to divide the total volume (100 mL) by the total time (30 minutes) and then convert the result to hours.
100 mL / 30 min = 3.33 mL/min
To convert minutes to hours, we multiply by 60:
3.33 mL/min * 60 min/h = 199.8 mL/h
Rounding to the nearest whole number, the nurse should set the IV infusion pump to deliver 200 mL/h.
A nurse is preparing to administer dopamine 5 mcg/kg/min by continuous IV infusion to a client who weighs 220 lb. Available is 400 mg of dopamine in 250 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mi/hr? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Full Explanation
To calculate the rate at which the IV pump should deliver dopamine, we can follow these steps:
Step 1: Convert the weight of the client from pounds to kilograms.
220 lb ÷ 2.2 = 100 kg (rounded to the nearest whole number)
Step 2: Calculate the total dose of dopamine per minute.
5 mcg/kg/min × 100 kg = 500 mcg/min
Step 3: Convert the dose from micrograms (mcg) to milligrams (mg).
500 mcg/min ÷ 1000 = 0.5 mg/min
Step 4: Determine the infusion rate in milliliters per hour (mL/hr).
The total volume of the solution is 250 mL.
The total dose of dopamine is 400 mg.
So, the infusion rate is (0.5 mg/min ÷ 400 mg) × 250 mL = 0.3125 mL/min.
Step 5: Convert the infusion rate from mL/min to mL/hr.
0.3125 mL/min × 60 min/hr = 18.75 mL/hr (rounded to the nearest tenth).
Therefore, the nurse should set the IV pump to deliver 18.8 mL/hr (rounded to the nearest tenth).
A nurse is preparing to administer dopamine 5 mcg/kg/min by continuous IV infusion to a client who weighs 220 lb. Available is 400 mg of dopamine in 250 ml of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mL/hr?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Full Explanation
To calculate the rate at which the IV pump should be set to deliver dopamine, we need to determine the total amount of dopamine in the infusion and divide it by the desired dose per minute.
Given:
Dopamine concentration: 400 mg in 250 mL
Desired dose: 5 mcg/kg/min
Patient weight: 220 lb
First, we need to convert the patient's weight from pounds to kilograms:
220 lb ÷ 2.2 = 100 kg
Next, we need to calculate the total amount of dopamine needed per minute:
5 mcg/kg/min × 100 kg = 500 mcg/min
Now, we need to convert the dopamine dose from mcg to mg:
500 mcg/min ÷ 1000 = 0.5 mg/min
To determine the infusion rate in mL/hr, we divide the dose in mg/min by the dopamine concentration in the infusion solution:
0.5 mg/min ÷ 250 mL = 0.002 mL/min
Finally, we convert the infusion rate from mL/min to mL/hr by multiplying by 60:
0.002 mL/min × 60 min = 0.12 mL/hr
Therefore, the nurse should set the IV pump to deliver 0.12 mL/hr.