A child with asthma has the following medication ordered: Theophylline 4 mg/kg/dose every 6 hrs. The child weighs 4.69 kg. Calculate the appropriate dose.
33.6 mg
18.7 mg
8.4 mg
19 mg
The Correct Answer is B
To calculate the appropriate dose of Theophylline for the child weighing 4.69 kg:
Dose = Weight (kg) × Dose (mg/kg)
Dose = 4.69 kg × 4 mg/kg
Dose = 18.76 mg
So, the appropriate dose is approximately 18.7 mg.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A room with a toddler who has pneumonia.
This option is not ideal because both RSV and pneumonia are respiratory infections that can spread to other patients. Placing these two patients together could increase the risk of cross-infection.
B. A private room with reverse isolation.
Reverse isolation is typically used to protect immunocompromised patients from acquiring infections from others. However, in the case of RSV, reverse isolation is not necessary because RSV primarily affects infants and young children who are generally not immunocompromised. Therefore, this option is not appropriate for an infant with RSV.
C. A private room with contact/droplet precautions.
This option is the most appropriate. RSV is primarily spread through respiratory droplets and direct contact with respiratory secretions. Placing the infant in a private room with contact/droplet precautions helps to minimize the risk of transmission to other patients. Healthcare workers and visitors entering the room should adhere to appropriate precautions, including wearing personal protective equipment (PPE) such as masks, gloves, and gowns.
D. A room with an infant who has croup.
Placing an infant with RSV in the same room as an infant with croup is not ideal because both conditions involve respiratory symptoms and may increase the risk of cross-infection.
Correct Answer is ["5.4"]
Explanation
Convert the child's weight from pounds (lb) to kilograms (kg):
20 lb × (1 kg / 2.20462 lb) ≈ 9.07 kg
Calculate the total daily dose of cefazolin:
Total daily dose = 30 mg/kg/day × 9.07 kg = 272.1 mg/day
Divide the total daily dose into two equal doses:
Each dose = 272.1 mg / 2 ≈ 136.05 mg
Determine the dose per ml using the available oral suspension concentration:
125 mg/5 ml = 25 mg/ml
Calculate the volume of oral suspension needed for each dose:
Volume per dose = Dose per dose / Concentration per ml
≈ 136.05 mg / 25 mg/ml
≈ 5.44 ml
So, the child should receive approximately 5.44 ml per dose of cefazolin oral suspension.
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