A patient has the following blood gases: PaCO2 33, pH 7.50, HCO3 23. Which of the following could NOT be the cause of this condition?
Aspirin toxicity
Fever
Anxiety attack
Chronic obstructive pulmonary disease (COPD)
The Correct Answer is D
A. Aspirin Toxicity:
Effect on Blood Gases: Aspirin toxicity can cause respiratory alkalosis due to increased respiratory rate (hyperventilation), leading to a decreased PaCO2 and increased pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values (low PaCO2 and high pH), making it a possible cause.
B. Fever:
Effect on Blood Gases: Fever might cause hyperventilation, resulting in respiratory alkalosis with decreased PaCO2 and increased pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values.
C. Anxiety Attack:
Effect on Blood Gases: Anxiety attacks can lead to hyperventilation and subsequent respiratory alkalosis with low PaCO2 and high pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values.
D. Chronic Obstructive Pulmonary Disease (COPD):
Effect on Blood Gases: COPD typically causes respiratory acidosis due to impaired gas exchange, resulting in elevated PaCO2 and decreased pH.
Relation to Given Blood Gases: COPD wouldn't typically cause the observed blood gas values of low PaCO2 and high pH.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Frequent mood changes:
This is correct. Hyperthyroidism is associated with increased levels of thyroid hormones, which can affect the nervous system and lead to mood changes, including irritability and anxiety.
B. Weight gain of 11 lbs in 3 weeks:
Weight loss is more characteristic of hyperthyroidism due to increased metabolism. Rapid weight gain is not typical.
C. Sensitivity to cold:
Sensitivity to cold is more characteristic of hypothyroidism, where there is a deficiency of thyroid hormones.
D. Constipation:
Constipation is more commonly associated with hypothyroidism, where there is a slowing of the digestive system.
Correct Answer is A
Explanation
A. IV administration of 50% dextrose in water:
This is the correct answer. The client is severely hypoglycemic, and IV administration of 50% dextrose in water is the most rapid way to raise the blood glucose level in an emergency situation.
B. IV bolus of 5% dextrose in 0.45% NaCl:
While this solution contains dextrose, it is not as concentrated as 50% dextrose. In an emergency, a more concentrated solution is needed to rapidly correct severe hypoglycemia.
C. Administer 4 oz. clear juice:
Oral intake may be too slow in this critical situation. IV administration is more appropriate for rapidly raising the blood glucose level.
D. Subcutaneous administration of 12 to 15 units of regular insulin:
This would further lower the blood glucose level and is not appropriate for treating severe hypoglycemia.
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