A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement?
Decrease expiratory flow time.
Decrease expiratory pressure.
Increase rate of ventilation.
Increase ventilator tidal volume.
The Correct Answer is C
The correct answer is choice C: Increase rate of ventilation.
Choice A rationale:
Decreasing expiratory flow time would not directly address the elevated PaCO2 levels. This intervention is more related to managing expiratory phase issues rather than correcting respiratory acidosis.
Choice B rationale:
Decreasing expiratory pressure might help with certain ventilation issues, but it does not specifically target the elevated PaCO2 and resulting acidosis.
Choice C rationale:
Increasing the rate of ventilation helps to blow off more CO2, thereby reducing PaCO2 levels and correcting the respiratory acidosis indicated by the pH of 7.26 and PaCO2 of 68 mm Hg.
Choice D rationale:
Increasing the ventilator tidal volume could also help reduce PaCO2 by increasing the amount of air exchanged with each breath. However, increasing the rate of ventilation is generally a more immediate and effective intervention for acute respiratory acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Stomatitis refers to the inflammation of the mouth and oral mucosa, which can cause pain and difficulty swallowing. In the context of a client receiving chemotherapy, stomatitis is a common side effect that can occur due to the effects of chemotherapy on rapidly dividing cells, including those in the oral cavity. When a client develops stomatitis, it is important for the practical nurse (PN) to obtain information about the client's ability to swallow during a focused assessment. This is because stomatitis can significantly impact a client's ability to eat and drink comfortably, which can lead to dehydration and malnutrition. Assessing the client's ability to swallow helps determine the extent of the issue and guides appropriate interventions and support.
Let's briefly evaluate the other options:
a) Urinary output.
Urinary output is not directly related to stomatitis. Stomatitis primarily affects the oral cavity, and its impact on urinary output is minimal or nonexistent. While monitoring urinary output is important for assessing hydration status, it is not the priority in this situation.
c) Frequency of bowel movements.
The frequency of bowel movements is unrelated to stomatitis. Stomatitis primarily affects the mouth, and its presence does not directly influence bowel movements. Assessing bowel movements may be relevant for other concerns, but it is not specifically related to stomatitis.
d) Blood pressure while standing.
Blood pressure while standing, also known as orthostatic blood pressure, is not directly relevant to stomatitis. Stomatitis primarily affects the oral cavity and does not typically have a direct impact on blood pressure. Assessing blood pressure while standing may be appropriate for other health concerns, such as orthostatic hypotension, but it is not the priority in this situation.
In summary, when a client receiving chemotherapy develops stomatitis, the practical nurse should focus on assessing the client's ability to swallow as it directly relates to the impact of stomatitis on the client's nutrition and hydration.
Correct Answer is ["A","B","C"]
Explanation
Choice A rationale:
Ibuprofen 400 mg every 4 to 6 hours as needed for temperature greater than 100.5 °F (38 °C). This order is questionable because ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that can potentially increase blood pressure, which could be harmful to a patient with hypertension. Furthermore, NSAIDs can mask the symptoms of infection, which could delay the diagnosis and treatment of serious infections.
Choice B rationale:
Enalapril 10 mg every morning. This order is questionable because enalapril is an angiotensin-converting enzyme (ACE) inhibitor used to treat hypertension. However, ACE inhibitors can cause a dry cough, which could exacerbate the patient’s existing cough due to pneumonia. Additionally, ACE inhibitors can potentially cause hyperkalemia (high potassium levels), so it’s important to monitor the patient’s electrolyte levels.
Choice C rationale:
Supplemental oxygen 10 L/min via nasal cannula. This order is questionable because a high flow rate of oxygen can potentially cause oxygen toxicity or hyperoxia, which can lead to cellular damage. The typical flow rate for a nasal cannula is between 1-6 L/min. A flow rate of 10 L/min may be too high for this patient, especially without a specified target SpO2 range.
Choice D rationale:
Continuous pulse oximetry. This order is appropriate because it allows for continuous monitoring of the patient’s oxygen saturation levels, which is crucial in a patient with pneumonia and shortness of breath.
Choice E rationale:
Send blood for a complete blood count, electrolytes, blood cultures, and procalcitonin. This order is appropriate because these tests can help monitor the patient’s overall health status and response to treatment.
Choice F rationale:
Admit to the medical floor. This order is appropriate because the patient requires hospitalization for treatment and monitoring due to his pneumonia.
Choice G rationale:
Vital signs every 4 hours. This order is appropriate because it allows for regular monitoring of the patient’s vital signs, which can help detect any changes in his condition.
Choice H rationale:
Chest x-ray now. This order is appropriate because a chest x-ray can help confirm the diagnosis of pneumonia and assess its severity.
Choice I rationale:
Sputum culture and sensitivity. This order is appropriate because it can help identify the specific organism causing the pneumonia and determine its antibiotic sensitivity, which can guide antibiotic therapy.
Choice J rationale:
Levofloxacin 500 mg intravenously every 24 hours. This order is appropriate because levofloxacin is a broad-spectrum antibiotic commonly used to treat pneumonia.
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