A nurse-midwife orders Stadol (butorphanol) 1 mg IV push every 3-4 hours as needed for pain. The nurse has Stadol available as 2 mg/mL injectable solution. How many milliliters should the nurse administer to the patient?
0.5 mL
1 mL
1.5 mL
2 mL
The Correct Answer is A
To administer 1 mg of Stadol, we need 1/2 mL of 2 mg/mL injectable solution. .
So, to administer 1 mg of Stadol, the nurse should administer 0.5 mL of the injectable solution.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The patient is ordered to receive 0.15 mg/kg of Zofran over 15 minutes. The patient weighs 176 lb, which is equivalent to 80 kg. To calculate the total amount of Zofran the patient should receive, multiply the weight by the dosage:
80 kg x 0.15 mg/kg = 12 mg
The Zofran arrives from the pharmacy mixed in 50 mL of normal saline, which means there is 12 mg of Zofran in 50 mL of solution. To calculate how many milliliters per hour the nurse should set the IV pump, we can use the following formula:
50 mL / 0.25 hour = X mL per hour X = 200 mL per hour
Therefore, the nurse should set the IV pump to deliver 200 mL of Zofran per hour to the patient.
Correct Answer is B
Explanation
This is the most commonly used method for calculating pediatric doses, especially for medications that are weight-based. The pediatric dose is typically calculated as a fraction or percentage of the adult dose based on the child's weight. For example, if the adult dose is 100mg and the child weighs 50kg, the child's dose may be calculated as 50mg (50% of the adult dose). Actual body weight takes into account the child's current weight, which can be an important factor in determining the appropriate dose.
Reasons why the other choices are not answers:
A. Body surface area is a method for calculating pediatric doses, but it is typically used for medications that are associated with toxicity or have a narrow therapeutic index.
C. Ideal body weight is an estimate of what a person's weight should be based on their height and gender, rather than their actual weight. It may be used in situations where a child is significantly overweight or underweight, but it is rarely used for pediatric dosing.
D. Actual body height is rarely used for pediatric dosing, as it does not take into account the child's weight or other important factors. It may be used in certain situations, such as when dosing growth hormone therapy.
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