A nurse is preparing to administer potassium chloride elixir 40 mEq divided into 2 equal doses every 12 hr. Available is 6.7 mEq/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["15"]
Calculate the single dose: 40 mEq / 2 doses = 20 mEq/dose
Calculate the volume: 20 mEq X (5 mL / 6.7 mEq) = 14.93 mL
Round to the nearest whole number: 15 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Desired dose = 40 mg
Available concentration = 10 mg/mL
To calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 40 mg / 10 mg/mL = 4 mL
Correct Answer is ["2525"]
Explanation
1. Calculate the total volume of the continuous IV infusion (Lactated Ringer's):
- Rate of infusion: 150 mL/hr
- Duration: 9 hr
- Total volume from Lactated Ringer's = Rate × Duration
- Total volume from Lactated Ringer's = 150 mL/hr × 9 hr = 1350 mL
2. Calculate the volume from the cefazolin IV intermittent bolus:
- Volume of cefazolin bolus = 100 mL
3. Calculate the total volume from the packed RBCs:
- Volume of first unit of packed RBCs = 275 mL
- Volume of second unit of packed RBCs = 250 mL
- Total volume from packed RBCs = 275 mL + 250 mL = 525 mL
4. Calculate the total volume from the two IV bolus infusions of 0.9% sodium chloride:
- Volume of first bolus = 250 mL
- Volume of second bolus = 250 mL
- Total volume from sodium chloride boluses = 250 mL + 250 mL = 500 mL
5. Calculate the volume from the famotidine IV intermittent bolus:
- Volume of famotidine bolus = 50 mL
6. Calculate the total intake by adding the volumes from all sources:
- Total intake = (Volume from Lactated Ringer's) + (Volume from cefazolin bolus) + (Total volume from packed RBCs) + (Total volume from sodium chloride boluses) + (Volume from famotidine bolus)
- Total intake = 1350 mL + 100 mL + 525 mL + 500 mL + 50 mL
- Total intake = 2525 mL
Answer: The nurse should record a total intake of 2525 mL for the client over the past 9 hours.
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