Order: lidocaine 2 g in 250 mL of D5W at 30 mL/h
What is the flow rate?
250 mL/hr
30 mL/hr
15 mL/hr
150 mL/hr
150 mL/hr
The Correct Answer is B
The order directly states that the infusion rate is 30 mL/hr.
The information about the amount of Lidocaine (2 g) and the volume of D5W (250 mL) is irrelevant to determining the flow rate in this case.
The flow rate is already specified as 30 mL/hr in the order.
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Related Questions
Correct Answer is A
Explanation
Given:
Volume of fluid: 3,000 mL
Infusion time: 24 hours
Formula:
Flow rate (mL/hr) = Volume (mL) / Time (hr)
Step 1: Calculate the infusion rate in mL/hr:
Flow rate (mL/hr) = 3,000 mL / 24 hr
Flow rate (mL/hr) = 125 mL/hr
Correct Answer is D
Explanation
1. Convert patient weight from pounds to kilograms:
Patient weight (kg) = 152 lb x 0.453592 kg/lb = 68.94 kg
2. Calculate the desired dose in mcg/min:
Desired dose (mcg/min) = 5 mcg/kg/min x 68.94 kg = 344.7 mcg/min
3. Convert mcg/min to mg/min:
Desired dose (mg/min) = 344.7 mcg/min / 1000 mcg/mg = 0.3447 mg/min
4. Calculate the concentration of dobutamine in the solution:
Concentration (mg/mL) = 500 mg / 250 mL = 2 mg/mL
5. Calculate the flow rate in mL/min:
Flow rate (mL/min) = Desired dose (mg/min) / Concentration (mg/mL)
Flow rate (mL/min) = 0.3447 mg/min / 2 mg/mL = 0.17235 mL/min
6. Calculate the flow rate in mL/hr:
Flow rate (mL/hr) = 0.17235 mL/min x 60 min/hr = 10.341 mL/hr
7. Round to the nearest tenth:
Flow rate (mL/hr) = 10.3 mL/hr
Therefore, the correct answer is 10.4 mL/hr
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