A nurse is preparing to administer nitroglycerine 15 mcg/min by continuous IV infusion. Available is nitroglycerin 25 mg in 250 mL of dextrose 5% in water (D5W). The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.
9
19
0.9
90
The Correct Answer is A
Convert the dosage to mcg per hour:
15 mcg/min×60 min/hr=900 mcg/hr15
Convert the available nitroglycerin concentration to mcg/mL:
25 mg=25,000 mcg
The concentration is(25,000 mcg/250 mL)=100 mcg
Calculate the flow rate in mL per hour using the dosage and concentration:
Flow rate (mL/hr)=(900 mcg/hr100 mcg/mL)=9 mL/hr
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Related Questions
Correct Answer is A
Explanation
Convert the dosage to mcg per hour:
15mcg/min×60min/hr=900mcg/hr15
Convert the available nitroglycerin concentration to mcg/mL:
25mg=25,000mcg
Theconcentrationis(25,000mcg/250mL)=100mcg
Calculate the flow rate in mL per hour using the dosage and concentration:
Flowrate(mL/hr)=(900mcg/hr100mcg/mL)=9mL/hr
Correct Answer is A
Explanation
Given:
Infusion rate: 3 mL/hr
Concentration of Nitroglycerin: 50 mg in 250 mL D5W (200 mcg/mL)
Step 1: Calculate the dose in mg/hr:
Dose (mg/hr) = Infusion rate (mL/hr) x Concentration (mg/mL)
Dose (mg/hr) = 3 mL/hr x 200 mcg/mL
Dose (mg/hr) = 600 mcg/hr
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