A nurse is preparing to administer diltiazem IV 0.25 mg/kg V bolus given over 2 min to client who has atrial fibrillation and weighs 154 lb. Available is diltiazem IV injection 25 mg/S 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.)
The Correct Answer is ["3.5"]
Understanding the Problem
Order: Diltiazem 0.25 mg/kg IV bolus over 2 minutes
Client Weight: 154 lbs
Available Solution: Diltiazem IV injection 25 mg/5 mL
Desired Dose: mL to administer
Step 1: Convert Client Weight to Kilograms (kg)
1 kg = 2.2 lbs
Client Weight in kg: 154 lbs / 2.2 lbs/kg = 70 kg
Step 2: Calculate the Total Dose
Ordered Dose: 0.25 mg/kg
Client Weight: 70 kg
Total Dose: 0.25 mg/kg * 70 kg = 17.5 mg
Step 3: Determine the Concentration of the Diltiazem Solution
Available Diltiazem: 25 mg
Solution Volume: 5 mL
Concentration: 25 mg / 5 mL = 5 mg/mL
Step 4: Calculate the Volume to Administer
Total Dose: 17.5 mg
Concentration: 5 mg/mL
Volume: 17.5 mg / 5 mg/mL = 3.5 mL
Step 5: Round to the Nearest Tenth
The calculated volume is 3.5 mL, which is already to the nearest tenth.
Answer: 3.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["14"]
Explanation
Understanding the Problem
Order: Esmolol 45 mcg/kg/min
Client Weight: 52 kg
Available Solution: Esmolol 2,500 mg in 250 mL of D5W
Desired Rate: mL/hr
Step 1: Calculate the Total Dose per Minute
Dose: 45 mcg/kg/min
Client Weight: 52 kg
Total Dose: 45 mcg/kg/min x 52 kg = 2340 mcg/min
Step 2: Convert Micrograms (mcg) to Milligrams (mg)
1 mg = 1000 mcg
Dose in mg/min: 2340 mcg/min / 1000 mcg/mg = 2.34 mg/min
Step 3: Calculate the Dose per Hour
Dose in mg/min: 2.34 mg/min
Minutes in an Hour: 60 min
Dose in mg/hr: 2.34 mg/min x 60 min/hr = 140.4 mg/hr
Step 4: Determine the Concentration of the Esmolol Solution
Available Esmolol: 2,500 mg
Solution Volume: 250 mL
Concentration: 2,500 mg / 250 mL = 10 mg/mL
Step 5: Calculate the Infusion Rate in mL/hr
Dose in mg/hr: 140.4 mg/hr
Concentration: 10 mg/mL
Infusion Rate: 140.4 mg/hr / 10 mg/mL = 14.04 mL/hr
Step 6: Round to the Nearest Whole Number
The calculated rate is 14.04 mL/hr.
Rounded to the nearest whole number: 14 mL/hr
Answer: 14 mL/hr
Correct Answer is ["30"]
Explanation
Understanding the Problem
Order: Potassium gluconate 40 mEq PO
Available Solution: Potassium gluconate liquid 20 mEq/15 mL
Desired Dose: mL to administer
Step 1: Set Up the Calculation
We need to find the volume (in mL) that contains the ordered dose (40 mEq). We can do this by setting up a proportion or using the formula:
Volume (mL) = (Ordered Dose (mEq) / Concentration (mEq/mL))
Step 2: Determine the Concentration
Available Concentration: 20 mEq / 15 mL
Step 3: Perform the Calculation
Ordered Dose: 40 mEq
Concentration: 20 mEq / 15 mL
Volume: (40 mEq) / (20 mEq / 15 mL) = (40 mEq X 15 mL) / 20 mEq
We can simplify this by dividing 40 by 20:
Volume: (2 X 15 mL) = 30 mL
Step 4: Round to the Nearest Whole Number
The result is 30 mL, which is already a whole number.
Answer: 30 mL
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
