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","D","E"]
Explanation
A serum potassium level of 3.2 mEq/L indicates hypokalemia, which is a potential complication of inhibiting aldosterone secretion and release. Aldosterone plays a key role in potassium regulation in the body by promoting potassium excretion in the kidneys. When aldosterone secretion is inhibited, potassium excretion decreases, leading to an accumulation of potassium in the bloodstream and resulting in hypokalemia. Symptoms of hypokalemia may include muscle weakness, cramping, irregular heartbeat, and fatigue.
B. Urine output of 1,200 mL in the last 2 hours:
This option does not directly relate to complications of inhibiting aldosterone secretion. A urine output of 1,200 mL in the last 2 hours indicates adequate urine production, which is generally a positive sign. However, in the context of inhibiting aldosterone secretion, the nurse would be more concerned about decreased urine output due to potential renal effects.
C. Blood osmolality of 250 mOsm/kg (250 mmol/kg):
Blood osmolality within the normal range (usually around 275-295 mOsm/kg) is not directly associated with complications of inhibiting aldosterone secretion. Blood osmolality reflects the concentration of solutes in the blood and is regulated by various factors, including water balance, electrolyte levels, and hormonal regulation. Inhibiting aldosterone secretion primarily affects electrolyte balance rather than blood osmolality.
D. Urine output of 25 mL/hr:
A urine output of 25 mL/hr is considered low and may indicate decreased renal perfusion or impaired kidney function. Inhibiting aldosterone secretion can affect renal function and urine output, leading to decreased urine production. Reduced urine output can contribute to fluid and electrolyte imbalances and may be a concern in patients with inhibited aldosterone secretion.
E. Serum potassium level of 5.4 mEq/L:
A serum potassium level of 5.4 mEq/L indicates hyperkalemia, which is another potential complication of inhibiting aldosterone secretion. Aldosterone helps regulate potassium levels by promoting potassium excretion in the kidneys. When aldosterone secretion is inhibited, potassium excretion decreases, leading to an accumulation of potassium in the bloodstream and resulting in hyperkalemia. Symptoms of hyperkalemia may include muscle weakness, irregular heartbeat, nausea, and numbness or tingling.
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