A client who is admitted with late symptoms of HIV disease is receiving zidovudine 0.2 grams every 4 hours. The medication is provided in suspension of 50 mg per 5 mL. How many mL should the nurse administer? (Enter numeric value only.)
The Correct Answer is ["20"]
Calculation:
Desired dose = 0.2 grams.
- Convert the desired dose from grams (g) to milligrams (mg) to match the available concentration's unit.
1 gram = 1000 mg,
Desired dose in mg = 0.2 g × 1000 mg/g
= 200 mg.
- Identify the available concentration.
Available is 50 mg per 5 mL.
= 50 mg / 5 mL
= 10 mg/mL.
- Calculate the volume to administer.
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
= 200 mg / 10 mg/mL
= 20 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Troponin I: Troponin I is a highly specific marker for myocardial injury. Elevated levels suggest acute coronary syndrome or myocardial infarction, which could explain the client’s chest pain, shortness of breath, and syncope. This findings may indicate potential for life-threatening cardiac damage.
B. Blood glucose: Abnormal glucose levels can contribute to long-term cardiovascular risk and may affect recovery, but they are not the priority in the acute setting unless critically low or high. They do not explain the acute onset of chest symptoms and syncope.
C. Oxygen saturation: While oxygen saturation is important, it is typically monitored continuously or via spot checks. Unless critically low, a slight reduction in oxygen saturation would not be as urgent as a positive cardiac biomarker in this clinical context.
D. Hematocrit: A low hematocrit could indicate anemia, which might contribute to fatigue or dyspnea, but it is not as immediately concerning as cardiac ischemia in a client with chest pain and syncope. It is a secondary concern in this case.
Correct Answer is D
Explanation
A. PaO₂ 60 mm Hg: A PaO₂ of 60 mm Hg indicates moderate hypoxemia, which is concerning but not the most direct marker of respiratory depression. It reflects impaired oxygenation, but CO₂ retention is more closely associated with respiratory arrest risk.
B. pH 7.30: A pH of 7.30 shows mild acidemia, which may result from respiratory or metabolic causes. While this indicates some imbalance, it does not specifically point to the severity of respiratory depression as much as rising CO₂ levels do.
C. HCO₃ 26 mEq/L (26 mmol/L): This bicarbonate value is within the normal range and does not suggest acute metabolic compensation or decompensation. It offers limited insight into the acute respiratory depression caused by sedatives like midazolam and fentanyl.
D. PaCO₂ 80 mm Hg: This significantly elevated PaCO₂ indicates severe hypoventilation and respiratory depression. Such a high carbon dioxide level can suppress central respiratory drive, impair consciousness, and quickly progress to respiratory arrest if not promptly reversed.
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