A nurse is preparing to administer digoxin at a dosage of 8 mcg/kg/day orally, divided equally every 12 hours, to a preschooler who weighs 33 lbs. Digoxin elixir is available at a concentration of 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.2"]
- Step 1: Identify the child's weight in pounds. The child weighs 33 lbs.
- Step 2: Convert the child's weight from pounds to kilograms. We know that 1 kg = 2.2 lbs. So, 33 lbs = 33 ÷ 2.2 kg. Calculating the division gives us approximately 15 kg.
- Step 3: Identify the prescribed dose in mcg/kg/day. The child is scheduled to receive 8 mcg/kg/day of digoxin, divided equally every 12 hours.
- Step 4: Calculate the total daily dose in mcg. We can do this by multiplying the child's weight in kg by the prescribed dose in mcg/kg:
- Total daily dose = 8 mcg/kg/day × 15 kg.
- Calculating the multiplication gives us: Total daily dose = 120 mcg/day.
- Step 5: Since the dose is divided equally every 12 hours, we divide the total daily dose by 2 to get the dose per administration:
- Dose per administration = Total daily dose ÷ 2.
- Dose per administration = 120 mcg ÷ 2.
- Calculating the division gives us: Dose per administration = 60 mcg.
- Step 6: Identify the concentration of the available solution. The available solution contains 0.05 mg/mL of digoxin. Convert this to mcg/mL for consistency with the dose per administration. We know that 1 mg = 1000 mcg. So, 0.05 mg = 0.05 × 1000 mcg = 50 mcg/mL.
- Step 7: Calculate the volume of solution needed to deliver the required dose. We can set up a proportion to solve for this:
- 50 mcg is to 1 mL as 60 mcg is to X mL.
- In other words, 50 mcg : 1 mL = 60 mcg : X mL.
- Step 8: Solve for X using cross-multiplication and division:
- Cross-multiplication gives us: 50 mcg × X mL = 60 mcg × 1 mL.
- Simplifying this gives us: 50X = 60.
- Dividing both sides by 50 gives us: X = 60 ÷ 50.
- Calculating the division gives us: X = 1.2.
Administer 1.2 mL of the digoxin elixir per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["125"]
Explanation
- Step 1: Identify the required dose in micrograms (mcg). The client is scheduled to receive 125 mcg of digoxin.
- Step 2: Identify the concentration of the available tablet. The available tablet contains 0.25 mg of digoxin.
- Step 3: Convert the tablet concentration from mg to mcg. We know that 1 mg = 1000 mcg. So, 0.25 mg = 0.25 × 1000 mcg = 250 mcg.
- Step 4: Calculate the number of tablets needed to deliver the required dose. We can set up a proportion to solve for this:
- 250 mcg is to 1 tablet as 125 mcg is to X tablets.
- In other words, 250 mcg : 1 tablet = 125 mcg : X tablets.
- Step 5: Solve for X using cross-multiplication and division:
- Cross-multiplication gives us: 250 mcg × X tablets = 125 mcg × 1 tablet.
- Simplifying this gives us: 250X = 125.
- Dividing both sides by 250 gives us: X = 125 ÷ 250.
- Calculating the division gives us: X = 0.5.
So, the nurse should administer 0.5 tablets per dose to deliver the required dose of 125 mcg.
Correct Answer is A
Explanation
Choice A reason:Taping the connections on the client's chest tube is essential to maintain a closed system and prevent air leaks, which could lead to a pneumothorax.
Choice B reason:Positioning the client in a supine position is not recommended as it may not facilitate optimal drainage from the pleural space.
Choice C reason:Stripping the chest tube, which involves applying pressure and sliding the fingers down the tube to remove clots, is not routinely recommended as it can generate high negative pressures and damage lung tissue.
Choice D reason: The chest tube drainage system should be placed below the level of the client's heart to allow for gravity drainage of pleural fluid and air.
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