A nurse evaluates the following arterial blood gas values in a patient: pH 7.48, PaO 98 mm Hg, PaCO 28 mm Hg, and HCO - 22 mEq/L (22 mmol/L). Which patient condition does the nurse correlate with these results?
Diarrhea and vomiting for 36 hours
Chronic obstructive pulmonary disease (COPD)
Anxiety-induced hyperventilation
Diabetic ketoacidosis and chronic obstructive pulmonary disease (COPD)
The Correct Answer is C
A. Diarrhea and vomiting for 36 hours:
Diarrhea and vomiting can lead to metabolic acidosis due to loss of bicarbonate and increased hydrogen ion concentration in the blood. However, the ABG values provided indicate respiratory alkalosis (high pH and low PaCO2), which is not consistent with metabolic acidosis caused by diarrhea and vomiting. Therefore, this choice does not correlate with the ABG values.
B. Chronic obstructive pulmonary disease (COPD):
COPD is a respiratory condition characterized by airflow limitation and increased airway resistance. It can lead to respiratory acidosis due to retention of carbon dioxide (PaCO2 levels would be elevated). The ABG values in the scenario show respiratory alkalosis (low PaCO2), which is the opposite of what would be expected in COPD. Therefore, this choice does not correlate with the ABG values provided.
C. Anxiety-induced hyperventilation:
Anxiety-induced hyperventilation is a common cause of respiratory alkalosis. During hyperventilation, there is excessive elimination of carbon dioxide (PaCO2 levels decrease), leading to an increase in pH (alkalosis). The ABG values in the scenario show a high pH (7.48) and low PaCO2 (28 mm Hg), consistent with respiratory alkalosis seen in hyperventilation due to anxiety.
D. Diabetic ketoacidosis and chronic obstructive pulmonary disease (COPD):
Diabetic ketoacidosis (DKA) is a metabolic condition characterized by hyperglycemia, ketosis, and metabolic acidosis (low pH and low bicarbonate levels). COPD, as mentioned earlier, can lead to respiratory acidosis due to retained carbon dioxide. Neither of these conditions correlates with the ABG values provided, which show respiratory alkalosis (high pH and low PaCO2). Therefore, this choice does not correlate with the ABG values.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Change the dressing when it is saturated:
This intervention is the most appropriate for managing a deep wound with a wet to-damp dressing. Wet to-damp dressings are designed to maintain a moist environment conducive to wound healing. Changing the dressing when it becomes saturated with wound exudate helps prevent excessive moisture accumulation, which can lead to skin maceration and potential infection. It ensures that the wound bed remains in an optimal healing environment and reduces the risk of complications.
B. Assess the wound bed once a day:
Assessing the wound bed is an essential part of wound care, as it allows the nurse to monitor healing progress, assess for signs of infection, and evaluate the effectiveness of the chosen dressing. However, the frequency of wound bed assessment may vary depending on the specific patient's needs and the type of dressing being used. While daily assessment is generally recommended, it does not directly dictate the timing of dressing changes for wet to-damp dressings, which are primarily changed based on saturation levels.
C. Contact the provider when the dressing leaks:
Contacting the provider when the dressing leaks or when there are concerns or complications is an important step in patient care. Leaking dressings can indicate issues with the dressing application, excessive wound exudate, or potential complications such as infection. It's crucial to inform the provider promptly so that appropriate interventions can be implemented, but this instruction is more reactive and does not specifically address the timing of dressing changes.
D. Change the dressing every 6 hours:
Changing the dressing every 6 hours is not typically recommended for wet to-damp dressings unless specifically indicated based on the patient's condition and the amount of wound exudate. Frequent dressing changes can disrupt the healing process, cause unnecessary trauma to the wound bed, and increase the risk of infection. Dressing change frequency should be based on the assessment of wound exudate and the dressing's ability to maintain a moist environment.
Correct Answer is A
Explanation
A. The transfusion will begin after the administration of 650 mg of acetaminophen (Tylenol).
This option suggests that the nurse would administer acetaminophen to lower the client's temperature and then proceed with the blood transfusion. While acetaminophen can be used to reduce fever, the decision to administer medication should be made by the healthcare provider after assessing the client's overall condition and determining the cause of the fever. Administering medication without proper evaluation and orders from the healthcare provider is not appropriate.
B. The blood will be held, and the health care provider will be notified.
This option is the correct choice. When a client has an elevated temperature before a blood transfusion, it is standard practice to hold the transfusion and notify the healthcare provider. An elevated temperature could indicate an underlying infection or another condition that needs to be evaluated before proceeding with the transfusion to ensure the client's safety.
C. The transfusion will begin after the administration of an antihistamine.
Administering an antihistamine would not be the appropriate action in response to an elevated temperature before a blood transfusion. Antihistamines are typically used to treat allergic reactions, not fevers. Holding the transfusion and notifying the healthcare provider to assess the situation would be the correct course of action.
D. The transfusion will begin as prescribed.
This option is not appropriate because starting the transfusion without addressing the elevated temperature could pose risks to the client's health. Elevated temperatures may indicate an underlying infection or other conditions that need to be evaluated before proceeding with the transfusion. Holding the transfusion and seeking further guidance from the healthcare provider is the recommended action in this scenario.
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