Calculate the dosage. Round to the nearest tenth place.
Order: Atropine 1.0 mg IM Stat.
Available: Atropine 0.4 mg/mL
1 ml
1.3 ml
2.5 ml
4 ml
The Correct Answer is C
Step 1: Identify the given information
- Ordered dose = 1.0 mg
- Available concentration = 0.4 mg per 1 mL
Step 2: Use the ratio and proportion method
Required dose ÷ Available concentration = Volume to administer
Step 3: Plug in the values
= (1.0 ÷ 0.4)
Step 4: Solve step by step
- 1.0 ÷ 0.4 = 2.5 mL
Step 5: Round to the nearest tenth
- 2.5 mL (already rounded)
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
To calculate the flow rate in drops per minute, we can use the following formula:
Drops per minute = (Flow rate in mL/hour x Drop factor) / 60
Given that we have an order of 1 L of 0.9% NS to infuse at 50 mL/hr and a drop factor of 15 gtt/mL, we can calculate the flow rate as follows:
Drops per minute = (50 x 15) / 60 = **12.5 gtt/min**
Therefore, the correct answer is **d) 15 gtt/min**.
Correct Answer is A
Explanation
To calculate the dosage using the ratio and proportion method, we need to set up a proportion with the ordered dose and the available dose as follows:
Ordered dose (units) / Dosage (mL) = Available dose (units) / Available volume (mL)
Plugging in the given values, we get:
8,500 units / Dosage (mL) = 50,000 units / 5 mL
Cross-multiplying, we get:
50,000 units x Dosage (mL) = 8,500 units x 5 mL
Solving for Dosage (mL), we get:
Dosage (mL) = (8,500 units x 5 mL) / 50,000 units
Simplifying, we get:
Dosage (mL) = 42,500 mL / 50,000
Therefore, the dosage is 0.85 mL.
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