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A nurse is preparing to administer cimetidine 300 mg IV over 15 min to a client. Available is cimetidine 300 mg/100 mL of 0.9% sodium chloride. The nurse should set the IV pump to deliver how many mL/hr?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Done use a trailing zero.)
Answer and Explanation

The Correct Answer is ["400"]

Step 1: Determine the Total Volume Needed

  • Supplied concentration: 300 mg/100 mL
  • Prescribed dose: 300 mg
  • Total volume needed = 100 mL

Step 2: Convert Time to Hours

  • Prescribed infusion time = 15 minutes
  • 15 minutes ÷ 60 minutes/hour = 0.25 hours

Step 3: Calculate the Infusion Rate (mL/hr)

  • Infusion rate = Total volume (mL) ÷ Time (hours)
  • Infusion rate = 100 mL ÷ 0.25 hours
  • Infusion rate = 400 mL/hr

The nurse should set the IV pump to deliver cimetidine at 400 mL/hr (rounded to the nearest whole number).


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Related Questions

Correct Answer is D

Explanation

A. Urine specific gravity 1.020: While this value indicates concentrated urine and can be useful in assessing dehydration, it doesn’t specifically confirm effective treatment. High urine specific gravity suggests dehydration because the kidneys are conserving water, but it doesn’t directly confirm the effectiveness of treatment.
B. BUN 28 mg/dl (Blood Urea Nitrogen): Elevated BUN levels can be seen in dehydration, but it's not a direct marker of effective treatment. It indicates dehydration due to increased urea concentration in the blood but doesn’t confirm if the treatment has been effective or not.
C. Serum hematocrit 55%: In dehydration, the blood becomes more concentrated due to water loss, causing an increase in hematocrit levels. However, while this value might indicate dehydration initially, it may not specifically confirm the effectiveness of treatment once initiated.
D. Serum osmolarity 310 mOsm: Serum osmolarity measures the concentration of particles in the blood. In dehydration, the blood becomes more concentrated, leading to increased serum osmolarity. When treatment is effective, rehydration occurs, diluting the blood and bringing serum osmolarity back toward normal levels. Therefore, a decrease in serum osmolarity towards the normal range (280-300 mOsm) would indicate effective treatment of dehydration

Correct Answer is ["20"]

Explanation

Step 1: Convert Weight to Kilograms

  • 1 lb = 0.4536 kg
  • 132 lb × 0.4536 kg/lb = 59.87 kg

Step 2: Calculate Total Dose of Acyclovir

  • Prescribed dose = 10 mg/kg
  • Total dose = 59.87 kg × 10 mg/kg = 598.75 mg

Step 3: Determine the Volume of Injectable Solution

  • Acyclovir IV concentration = 30 mg/mL
  • Volume = 598.75 mg ÷ 30 mg/mL = 19.96 mL

The nurse should administer 20 mL (rounded to the nearest whole number) of acyclovir IV injectable solution.

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