A medication is to infuse at 0.6 mg/hr. The solution available is 50 mg/150 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number & fill in the blank with the numerical value only)
The Correct Answer is ["2"]
Desired dose rate = 0.6 mg/hr
Available concentration = 50 mg / 150 mL
- Calculate the concentration in mg/mL:
Concentration (mg/mL) = 50 mg / 150 mL
= 1/3 mg/mL
- Calculate the flow rate in mL/hr:
Flow rate (mL/hr) = Desired dose rate (mg/hr) / Concentration (mg/mL)
= 0.6 mg/hr / (1/3 mg/mL)
= 0.6 × 3 mL/hr
Flow rate (mL/hr) = 1.8 mL/hr
- Round to the nearest whole number:
= 2 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["10"]
Explanation
Desired dose = 20 mg
Available concentration = 10 mg per 5 mL
- Calculate the concentration in mg/mL:
Concentration (mg/mL) = Available dose / Available volume
= 10 mg / 5 mL
= 2 mg/mL
Volume to administer = Desired dose / Available concentration
= 20 mg / 2 mg/mL
= 10 mL
Correct Answer is A
Explanation
A. Cushing's syndrome: Prolonged use of corticosteroids can lead to iatrogenic Cushing's syndrome. Common features include weight gain (especially central), mood changes such as anxiety or irritability, insomnia, and physical changes like hirsutism (increased facial hair), moon face, and truncal obesity due to chronic hypercortisolism.
B. Adrenal insufficiency: This condition typically results from abrupt withdrawal of corticosteroids, leading to fatigue, hypotension, and electrolyte imbalances. It does not cause the excess cortisol-related symptoms described in this patient’s presentation.
C. Diabetes mellitus: While corticosteroids can raise blood glucose levels and increase the risk for diabetes, the described symptoms—particularly the weight distribution and hirsutism—are more indicative of Cushing’s syndrome than diabetes.
D. Dystonia: Dystonia involves involuntary muscle contractions causing repetitive movements or abnormal postures. It is not associated with the metabolic and hormonal effects caused by long-term corticosteroid use.
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