A client receives a prescription for vancomycin 500 mg IV every 8 hours. The medication is provided in "500 mg per 100 ml" of dextrose 5% in water.
To administer the medication over an hour, the nurse should set the infusion pump to deliver how many mL/hr?
50 mL/hr.
100 mL/hr.
150 mL/hr.
200 mL/hr.
The Correct Answer is B
Step 1: Identify the desired dose and the available concentration. Desired dose: 500 mg of vancomycin
Available concentration: 500 mg per 100 ml
Step 2: Determine the volume needed to deliver the desired dose.
Since the available concentration is 500 mg per 100 ml, no further calculation is required. The volume needed to deliver 500 mg of vancomycin is already 100 ml.
Step 3: Calculate the infusion rate in mL/hr.
The medication needs to be administered over 1 hour.
Therefore, the infusion pump should be set to deliver the 100 ml of solution over 1 hour. Infusion rate = 100 ml / 1 hour = 100 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Liquefying secretions is the most crucial action to address the client's immediate respiratory concerns. Thickened mucus obstructs airflow, leading to shortness of breath, productive cough, and difficulty breathing upon exertion. Increasing fluid intake thins mucus, making it easier to expel and improving ventilation. This directly addresses the client's current symptoms and promotes airway clearance.
Hydration and Mucociliary Clearance: Adequate hydration is indispensable for optimal mucociliary clearance, the natural mechanism that removes mucus from the airways. Fluids moisten the respiratory tract, allowing cilia (tiny hair-like structures) to effectively move mucus upwards, where it can be coughed out or swallowed.
Thinning Mucus: Water acts as a natural expectorant, thinning mucus and reducing its viscosity. This makes it easier for the client to cough up the mucus, clearing the airways and reducing the sensation of breathlessness.
Decreasing Mucus Production: Dehydration can trigger the body to produce more mucus as a protective response. By staying hydrated, the client can help prevent excessive mucus production, further easing symptoms.
Supporting Overall Respiratory Health: Proper hydration maintains the health of the respiratory system's tissues and cells, promoting efficient gas exchange and reducing inflammation.
Preventing Dehydration-Related Complications: Dehydration can exacerbate respiratory problems and lead to other complications, such as fatigue, headaches, and impaired immune function. Maintaining adequate fluid intake helps prevent these issues.
Key points to emphasize to the client:
Drink fluids throughout the day, even if not feeling thirsty.
Water is the best choice, but clear broths, juices, and herbal teas can also contribute to fluid intake. Avoid caffeine and alcohol, as they can be dehydrating.
Monitor urine output to ensure adequate hydration (urine should be pale yellow or clear).
Increase fluid intake during periods of increased mucus production, such as during respiratory infections or exercise.
Correct Answer is B
Explanation
The most likely diagnosis for this client isB. Pulmonary embolism and postpartum hemorrhage.
Here’s why:
- Postpartum Hemorrhage:
- The client has a large amount of lochia rubra, indicating significant blood loss.
- Hemoglobin and hematocrit levels are low (7.5 g/dL and 22%, respectively), which is consistent with significant blood loss.
- Symptoms like feeling lightheaded, pale appearance, and cool, clammy skin further support this diagnosis.
- Pulmonary Embolism:
- The client is experiencing shortness of breath, using accessory muscles to breathe, and has an oxygen saturation of 88% on room air.
- Elevated D-dimer levels (1.5 µg/mL) suggest the presence of a clot.
- Arterial Blood Gas (ABG) results show a low PaO2 (60 mmHg) and a slightly acidic pH (7.32), which can be seen in pulmonary embolism.
- The client reports a feeling of tightness in her chest and has a rapid heart rate (120 beats per minute), which are also indicative of a pulmonary embolism.
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