A nurse is preparing to administer ondansetron 4 \text{ mg} via intravenous (IV) push to a… — NCLEX-RN

A nurse is preparing to administer ondansetron $4 \text{ mg}$ via intravenous (IV) push to a client experiencing nausea. The medication vial is labeled $2 \text{ mg/mL}$ . How many milliliters (mL) should the nurse administer?

$2 \text{ mL}$ Answer
B
$0.5 \text{ mL}$
C
$4 \text{ mL}$
D
$8 \text{ mL}$

Answer

2 \text{ mL}

The correct volume is calculated by taking the desired dose (

4 \text{ mg}

), dividing it by the available concentration (

2 \text{ mg}

), and multiplying by the volume (

1 \text{ mL}

). This mathematically evaluates to

2 \text{ mL}

, which is the correct volume to administer the prescribed dose.

Step-by-Step Solution

Identify the prescribed dose (Desired) and the available concentration (Have).

Desired =

4 \text{ mg}

, Have =

2 \text{ mg}

1 \text{ mL}

These values are needed for the standard dosage calculation formula.

Apply the dosage calculation formula: (Desired / Have)

\times

Volume.

(4 \text{ mg} / 2 \text{ mg}) \times 1 \text{ mL} = 2 \text{ mL}

This determines the exact volume of medication to administer to deliver the prescribed dose safely.

Key Concept

Intravenous Medication Dosage Calculation

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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