The doctor orders 4.5mg/kg for a patient weighing 21#. The concentration of your medication is 15mg/ml. How many mls will you give the patient?


To solve this, we need to determine the amount of medication (in mL) to administer based on the doctor's order, the patient's weight, and the medication concentration.

### Steps:
1. **Convert the patient’s weight from pounds to kilograms:**
   \[
   1 \, \text{pound} = 0.4536 \, \text{kg}
   \]
   So,
   \[
   21 \, \text{pounds} \times 0.4536 = 9.5256 \, \text{kg}
   \]

2. **Determine the total dosage required (in mg):**
   The doctor ordered 4.5 mg per kg.
   \[
   4.5 \, \text{mg/kg} \times 9.5256 \, \text{kg} = 42.8652 \, \text{mg}
   \]

3. **Use the concentration of the medication to find the volume to administer (in mL):**
   The concentration is 15 mg/mL. To find the required volume, we divide the total dosage by the concentration:
   \[
   \frac{42.8652 \, \text{mg}}{15 \, \text{mg/mL}} = 2.8577 \, \text{mL}
   \]

### Answer:
You will administer **2.86 mL** of the medication to the patient.

Would you like more details or have any questions?

Here are five related questions to further explore:
1. How do you convert weights between different units in medical dosages?
2. What is the importance of correct dosage calculations in medical administration?
3. How do you adjust dosages based on concentration variations in medication?
4. What safety protocols should be followed when calculating drug dosages for children?
5. How do you round off drug volumes when precision is critical?

**Tip:** Always double-check your calculations and ensure unit conversions are accurate when dealing with medication dosages!

The doctor orders 4.5mg/kg for a patient weighing 21#. The concentration of your medication is 15mg/ml. How many mls will you give the patient?

Learn how to calculate the correct medication dosage based on the doctor's order of 4.5 mg/kg for a patient weighing 21 pounds, with a medication concentration of 15 mg/mL. This step-by-step guide explains unit conversion, dosage calculation, and proportional reasoning. Suitable for Grades 9-12.

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