The physician orders a Lidocaine drip to infuse at 5 mcg/min. The drug is available as 750 mg in 500 mL of fluid. The client weighs 220 pounds. Calculate mcg/min, mcg/hr, and mL/hr.
The Correct Answer is ["0.2"]
Step-by-Step Calculation:
Step 1: Convert the client's weight from pounds to kilograms.
220 lbs ÷ 2.2 = 100 kg
Result = 100 kg
Step 2: Calculate the concentration of Lidocaine in mcg/mL.
750 mg × 1000 = 750,000 mcg
Result = 750,000 mcg
750,000 mcg ÷ 500 mL = 1500 mcg/mL
Result = 1500 mcg/mL
Step 3: Calculate the infusion rate in mcg/min.
5 mcg/min (prescribed dose)
Result = 5 mcg/min
Step 4: Calculate the infusion rate in mcg/hr.
5 mcg/min × 60 min/hr = 300 mcg/hr
Result = 300 mcg/hr
Step 5: Calculate the infusion rate in mL/hr.
300 mcg/hr ÷ 1500 mcg/mL = 0.2 mL/hr
Result = 0.2 mL/hr
Final Results:
- Infusion rate: 5 mcg/min
- Infusion rate: 300 mcg/hr
- Infusion rate: 0.2 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Reduced blood pressure is not a specific complication of infective endocarditis. While hypotension can occur in severe cases due to septic shock, it is not a hallmark of the disease. Infective endocarditis primarily affects the heart valves and can lead to embolic events, heart failure, and other complications.
Choice B Reason:
Osler's nodes are a classic sign of infective endocarditis. These are painful, red or purple, raised lesions found on the hands and feet. They are caused by immune complex deposition and are indicative of the systemic nature of the infection. Their presence can help in the clinical diagnosis of infective endocarditis.
Choice C Reason:
Clear lung sounds are not a complication of infective endocarditis. In fact, clear lung sounds would generally indicate that there is no pulmonary involvement or congestion. Complications of infective endocarditis are more likely to involve the heart, kidneys, and other organs through embolic events.
Choice D Reason:
Increased appetite is not associated with infective endocarditis. Patients with this condition often experience symptoms such as fever, fatigue, and weight loss due to the chronic infection. Increased appetite would be an unusual finding and not related to the disease process.
Correct Answer is ["20.46"]
Explanation
Step 1: Convert the client's weight from pounds to kilograms.
150 pounds ÷ 2.2 = 68.18 kg
Result at each step = 68.18 kg
Step 2: Calculate the dose in mcg/min.
3 mcg/kg/min × 68.18 kg = 204.54 mcg/min
Result at each step = 204.54 mcg/min
Step 3: Convert the dose from mcg to mg.
204.54 mcg ÷ 1000 = 0.20454 mg/min
Result at each step = 0.20454 mg/min
Step 4: Calculate the infusion rate in mL/min.
0.20454 mg/min ÷ 600 mg × 1000 mL = 0.341 mL/min
Result at each step = 0.341 mL/min
Step 5: Convert the infusion rate to mL/hour.
0.341 mL/min × 60 min/hour = 20.46 mL/hour
Result at each step = 20.46 mL/hour
So, the infusion rate is 20.46 mL/hour.
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