A client who weighs 65 kg receives a prescription for lorazepam 44 mcg/kg intravenously to be administered 20 minutes before a scheduled procedure. The medication is available in 2 mg/mL vial. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.4"]
Calculate the total dosage required: 44 mcg/kg * 65 kg = 2860 mcg. Convert mcg to mg: 2860 mcg ÷ 1000 = 2.86 mg.
Divide by concentration: 2.86 mg ÷ 2 mg/mL = 1.43 mL.
Considering the vial contains 2 mg/mL, the nurse should administer around 1.43 mL, which can be rounded to 1.4 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Shortness of breath on exertion in a client with a history of chronic obstructive pulmonary disease (COPD) and pneumonia indicates increased respiratory distress and compromised lung function. It suggests that the client is experiencing difficulty breathing even with minimal physical exertion. This finding may indicate worsening respiratory status, increased oxygen demand, and inadequate oxygenation. The nurse should take immediate action to address the shortness of breath, which may involve providing supplemental oxygen, initiating or adjusting bronchodilator medications, and monitoring the client's respiratory status closely. Prompt intervention is crucial to ensure adequate oxygenation and prevent respiratory failure.
While the other assessment findings (bilateral diffuse wheezing, temperature of 100.5 °F, and yellow expectorated sputum) are also important and require attention, the shortness of breath on exertion poses the greatest immediate risk and necessitates immediate intervention to address the client's respiratory distress.
Correct Answer is ["9"]
Explanation
Here are the steps you can follow to calculate the infusion pump flow rate:
Step 1: Calculate the prescribed dose in mcg/min
- Dose per weight: 2 mcg/kg/min * 60 kg = 120 mcg/min
Step 2: Convert the concentration in the IV bag to mcg/mL
- Convert mg to mcg: 200 mg * 1000 mcg/mg = 200,000 mcg
- Concentration: 200,000 mcg / 250 mL = 800 mcg/mL
Step 3: Calculate the flow rate in mL/min
- Flow rate: 120 mcg/min / 800 mcg/mL = 0.15 mL/min
Step 4: Convert the flow rate to mL/hour
- Hour conversion: 0.15 mL/min * 60 min/hour = 9 mL/hour
Therefore, the nurse should program the infusion pump to deliver 9 mL/hour.
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