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Soru

Zorluk: KolayPharmacological Therapies

A client who is experiencing a productive cough has a prescription for guaifenesin 400 mg400\text{ mg} by mouth every 4 hours4\text{ hours}. The facility pharmacy dispenses guaifenesin liquid with a labeled concentration of 200 mg200\text{ mg} per 10 mL10\text{ mL}. How many milliliters (mL)(\text{mL}) should the nurse administer for a single dose?

  1. A
    2 mL2\text{ mL}
  2. B
    10 mL10\text{ mL}
  3. 20 mL20\text{ mL}Cevap
  4. D
    40 mL40\text{ mL}

Cevap

The nurse should administer 20 mL20\text{ mL} for a single dose.
To calculate the correct liquid medication dose, use the standard formula: DesiredHave×Volume\frac{\text{Desired}}{\text{Have}} \times \text{Volume}. The desired dose is 400 mg400\text{ mg}, the dose on hand is 200 mg200\text{ mg}, and the supplied volume is 10 mL10\text{ mL}. Calculating (400 mg200 mg)×10 mL\left(\frac{400\text{ mg}}{200\text{ mg}}\right) \times 10\text{ mL} results in exactly 20 mL20\text{ mL}.

Adım Adım Çözüm

1
Identify the prescribed dose (Desired).
The prescribed dose is 400 mg400\text{ mg}.
This is the target amount of medication the client needs to receive.
2
Identify the concentration of the medication supplied (Have and Volume).
The medication available is 200 mg200\text{ mg} in every 10 mL10\text{ mL}.
This determines the ratio of medication mass to liquid volume.
3
Apply the dosage calculation formula: DesiredHave×Volume\frac{\text{Desired}}{\text{Have}} \times \text{Volume}.
400 mg200 mg×10 mL=2×10 mL=20 mL\frac{400\text{ mg}}{200\text{ mg}} \times 10\text{ mL} = 2 \times 10\text{ mL} = 20\text{ mL}.
Using the standard formula ensures the correct volumetric dose is prepared.

Anahtar Kavram

Medication Dosage Calculation
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Konular

Pharmacological Therapies

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