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 B
Explanation
A. "The test needs to be repeated following a 12-hour fast."
This statement is not accurate. The hemoglobin A1c test does not require fasting. It reflects the average blood glucose levels over the past two to three months and is not affected by short-term changes in diet or fasting.
B. "It tells us about your sugar control for the last 3 months."
This statement is accurate. The hemoglobin A1c test provides information about the average blood glucose levels over the past two to three months. It's a valuable tool for assessing long-term glycemic control.
C. "It looks like you aren't following the prescribed diabetic diet."
The hemoglobin A1c test reflects overall glycemic control over several months and is not solely influenced by recent dietary habits. While diet plays a role in diabetes management, this statement oversimplifies the interpretation of the A1c result.
D. "Your insulin regimen needs to be altered significantly."
While a high A1c may indicate a need for adjustments in the treatment plan, the decision to alter the insulin regimen should be based on a comprehensive assessment of the patient's overall diabetes management, including lifestyle, diet, and other factors. It may not solely be determined by the A1c result.
Correct Answer is D
Explanation
A. Respiratory acidosis:
This occurs when there is inadequate ventilation, leading to an accumulation of carbon dioxide (CO2) in the blood. In the context of a nasogastric tube attached to low suction, respiratory acidosis is not the primary concern. It is more associated with conditions like respiratory depression or lung diseases.
B. Metabolic acidosis:
Metabolic acidosis results from an excess of acid or a loss of bicarbonate. It is not the typical outcome of a nasogastric tube attached to low suction. Conditions like diarrhea or renal failure are more commonly associated with metabolic acidosis.
C. Respiratory alkalosis:
Respiratory alkalosis occurs when there is excessive loss of carbon dioxide from the body, often due to hyperventilation. This is not a typical consequence of a nasogastric tube attached to low suction.
D. Metabolic alkalosis:
Metabolic alkalosis is characterized by an excess of bicarbonate or a loss of acid. In the given context, with the nasogastric tube attached to low suction, there is a potential loss of gastric acid, contributing to metabolic alkalosis.
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