The daily dose of ampicillin for the treatment of an ear infection is 115mg/kg of body weight. What is the daily dose for a 34 lb. child?

To find the daily dose of ampicillin for a 34 lb child, we can follow these steps:

1. **Convert the child's weight from pounds to kilograms** since the dosage is given in mg per kg of body weight.
   \[
   1 \text{ lb} = 0.453592 \text{ kg}
   \]
   So, for a 34 lb child:
   \[
   34 \text{ lb} \times 0.453592 \text{ kg/lb} = 15.4221 \text{ kg}
   \]

2. **Calculate the daily dose** by multiplying the child's weight in kilograms by the dosage per kilogram:
   \[
   \text{Daily dose} = 115 \text{ mg/kg} \times 15.4221 \text{ kg} = 1773.5415 \text{ mg}
   \]

Thus, the daily dose of ampicillin for the 34 lb child is approximately **1773.54 mg**.

Would you like further details or have any other questions? 

Here are some related questions:

1. How would the dosage change if the child's weight were 40 lb instead of 34 lb?
2. What is the total dose for a week if the medication is given once daily?
3. How would you calculate the dose if the medicine is to be given three times a day?
4. What considerations should be taken if the child is underweight?
5. How would you determine the dosage if the concentration of the ampicillin suspension is 250 mg/5 mL?

**Tip:** Always ensure the weight is in the correct unit (kilograms) when using dosage calculations based on body weight.

Learn how to calculate the daily dose of ampicillin for a 34 lb child by converting the weight to kilograms and applying the correct dosage formula. Suitable for students in Grades 5-7.

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