The label on a 2 gram vial of cefotaxime sodium powder for reconstitution reads, "Reconstitute with 50 mL of normal saline." After reconstitution with the 50 mL of normal saline, how many mg will each mL contain? (Enter numeric value only.)
The Correct Answer is ["40"]
Given:
Vial strength: Cefotaxime 2 grams (2000 mg)
Volume of diluent: 50 mL of normal saline
Step 1: Calculate the concentration of Cefotaxime in the reconstituted solution:
Concentration (mg/mL) = Total amount of Cefotaxime (mg) / Total volume of solution (mL)
Concentration (mg/mL) = 2000 mg / 50 mL
Concentration (mg/mL) = 40 mg/mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.25"]
Explanation
Given:
Ordered dose of Epinephrine: 0.01 mg/kg
Child's weight: 55 pounds
Concentration of Epinephrine: 1 mg/mL
Step 1: Convert child's weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Child's weight in kg = 55 lbs x 0.453592 kg/lb = 24.94756 kg
Step 2: Calculate the total dose of Epinephrine:
Total dose (mg) = Ordered dose (mg/kg) x Child's weight (kg)
Total dose (mg) = 0.01 mg/kg x 24.94756 kg
Total dose (mg) = 0.2494756 mg
Step 3: Calculate the volume to be administered:
Volume (mL) = Total dose (mg) / Concentration (mg/mL)
Volume (mL) = 0.2494756 mg / 1 mg/mL
Volume (mL) = 0.2494756 mL
Step 4: Round to the nearest hundredth:
Volume (mL) ≈ 0.25 mL
Correct Answer is ["100"]
Explanation
Given:
Volume of fluid: 2 liters (1 liter = 1000 mL, so 2 liters = 2000 mL)
Infusion time: 20 hours
Formula:
Flow rate (mL/hr) = Volume (mL) / Time (hr)
Step 1: Calculate the infusion rate in mL/hr:
Flow rate (mL/hr) = 2000 mL / 20 hr
Flow rate (mL/hr) = 100 mL/hr
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