Calculate the flow rate in mL/hr. (The equipment used is programmable in whole mL/hr).
Order: 100 mL 0.45% NS in 45 minutes by infusion pump.
Calculate the rate in mL/hr.
145 mL/hr
133 mL/hr
125 mL/hr
135 mL/hr
The Correct Answer is B
To solve this problem, we need to use the formula:
Rate (mL/hr) = Volume (mL) / Time (hr)
Plugging in the given values, we get:
Rate (mL/hr) = 100 mL / 0.75 hr
Rate (mL/hr) = 133.33 mL/hr
However, this is not the final answer because the equipment used is programmable in whole mL/hr, which means we need to round the rate to the nearest whole number. Therefore, we need to apply the rounding rule: if the decimal part is 0.5 or more, round up; if the decimal part is less than 0.5, round down. In this case, the decimal part is 0.33, which is less than 0.5, so we round down. This gives:
Rounded rate (mL/hr) = 133 mL/hr
Therefore, the correct flow rate is 133 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Step 1: Identify the given information
- Ordered dose = 6,000 units
- Available concentration = 5,000 units per 1 mL
Step 2: Set up the ratio and proportion equation
- 5,000 units ÷ 1 mL = 6,000 units ÷ X mL
Step 3: Solve for X
- (6,000 × 1) ÷ 5,000 = X
- 6,000 ÷ 5,000 = 1.2 mL
Step 4: Round to the nearest tenth
- 1.2 mL (already rounded)
Correct Answer is D
Explanation
To calculate the dosage using the ratio and proportion method, we can use the following formula: Order/Available = Dose/1 capsule
Where Order is 1.0 g p.o. BID and Available is Amoxil capsules labeled 250 mg per capsule. Substituting the values in the formula:
1.0 g p.o. BID / 250 mg per capsule = Dose / 1 capsule
Dose = (1.0 g p.o. BID x 1000 mg/g) / (250 mg per capsule x 2) Dose = 4 capsules
Explanation: The order is for 1.0 g p.o. BID which means that the patient needs to receive a total of 2 grams of Amoxil per day. Since each capsule contains 250 mg of Amoxil, we need to calculate how many capsules are required to achieve a total of 2 grams per day. Using the ratio and proportion method, we can calculate that 4 capsules are required to achieve a total of 2 grams per day.
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