A nurse is preparing to administer digoxin 0.375 mg PO dally. Available is digoxin elixir 0.05 mg/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 ["7.5"]
1. Determine the volume based on concentration and dosage:
Digoxin dosage (mg): 0.375 mg
Digoxin concentration (mg/mL): 0.05 mg/mL (from the available elixir)
Volume (mL) = Dosage (mg) / Concentration (mg/mL)
Volume (mL) = 0.375 mg / 0.05 mg/mL
2. Round the answer to the nearest tenth:
The calculated volume is 7.5 mL. Rounding to the nearest tenth:
Volume (mL) = 7.5 mL (rounded)
Therefore, the nurse should administer 7.5 mL of digoxin elixir.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.8"]
Explanation
1. Convert client's weight to kilograms (kg):
Weight (kg) = 154 lb x 0.453592 kg/lb (conversion factor)
Weight (kg) ≈ 70.31 kg (rounded to two decimal places)
2. Calculate the total gentamicin dosage:
Dosage (mg/kg) = 1 mg/kg (given)
Weight (kg) = 70.31 kg (calculated)
Total dosage (mg) = Dosage (mg/kg) x Weight (kg)
Total dosage (mg) = 1 mg/kg x 70.31 kg
Total dosage (mg) ≈ 70.31 mg (rounded to two decimal places)
3. Determine the volume to administer based on medication concentration:
Concentration (mg/mL) = 40 mg/mL (available gentamicin solution)
Total dosage (mg) = 70.31 mg (calculated)
Volume (mL) = Dosage (mg) / Concentration (mg/mL)
Volume (mL) = 70.31 mg / 40 mg/mL
4. Round the answer to the nearest tenth:
Volume to administer ≈ 1.76 mL (rounded to two decimal places)
Therefore, the nurse should administer approximately 1.8 mL of gentamicin solution.
Correct Answer is A
Explanation
A) Take 15 mL 1 hr. after meals and at bedtime:
This instruction uses milliliters (mL), which is a metric unit of volume. The metric system is widely used in medical settings for its precision and universality, making milliliters a standard measurement for liquid medications.
B) Take 2 drops four times daily:
This instruction uses drops as the unit of measurement. Drops are not a metric unit; they are a more general unit often used in prescribing liquid medications, especially for eye or ear drops, but they lack the precision of metric measurements.
C) Take 0.5 oz 30 min before meals and at bedtime:
This instruction uses ounces (oz), which are part of the imperial system, not the metric system. Ounces are commonly used in everyday measurements in some countries but are not the preferred unit in medical settings where metric units are standard.
D) Take 1 tsp four times daily:
This instruction uses teaspoons (tsp), which are not metric units. Teaspoons are part of the household measurement system and are less precise compared to metric units, which can lead to variations in dosing.
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