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Calculate flow rate in drops per minute:

Order: Zosyn 1.3 g in 100 mL D5W IVPB q8h to infuse over 30 min. Drop factor: 60 gtt/mL

Determine rate in gtt/min.

A.

150 gtt/min

B.

100 gtt/min

C.

200 gtt/min

D.

400 gtt/min

Answer and Explanation

The Correct Answer is C

Step 1: Identify the given information

  • Total volume to infuse = 100 mL
  • Infusion time = 30 minutes
  • Drop factor = 60 gtt/mL

Step 2: Use the formula for flow rate
Flow rate (gtt/min) = (Total Volume (mL) × Drop Factor (gtt/mL)) ÷ Infusion Time (min)

Step 3: Plug in the values
= (100 × 60) ÷ 30

Step 4: Solve step by step

  • 100 × 60 = 6000
  • 6000 ÷ 30 = 200


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Related Questions

Correct Answer is C

Explanation

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)

Correct Answer is B

Explanation

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.

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