The nurse understands causes of respiratory acidosis include: (SELECT ALL THAT APPLY)
asthma
hyperventilation
chronic obstructive pulmonary disease
renal insufficiency
pneumonia
Correct Answer : C,E
A. Asthma:
Explanation: Asthma is associated with respiratory alkalosis, not respiratory acidosis. In asthma, there is often hyperventilation leading to a decrease in carbon dioxide levels.
B. Hyperventilation:
Explanation: Correct. Hyperventilation can cause respiratory alkalosis, not respiratory acidosis. It leads to a decrease in carbon dioxide levels.
C. Chronic obstructive pulmonary disease (COPD):
Explanation: Correct. Conditions like COPD can lead to respiratory acidosis. In COPD, there is impaired ventilation, leading to an accumulation of carbon dioxide.
D. Renal insufficiency:
Explanation: Renal insufficiency is not a direct cause of respiratory acidosis. Respiratory acidosis is primarily related to respiratory system dysfunction.
E. Pneumonia:
Explanation: Correct. Pneumonia can cause respiratory acidosis. In pneumonia, there may be difficulty in eliminating carbon dioxide due to impaired gas exchange.
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Related Questions
Correct Answer is D
Explanation
A. Respiratory Acidosis:
Explanation: Respiratory acidosis occurs when there is inadequate elimination of carbon dioxide, leading to an increase in PaCO2 and a decrease in blood pH. This is typically associated with conditions that impair ventilation.
B. Metabolic Alkalosis:
Explanation: Metabolic alkalosis is characterized by an elevated blood pH and bicarbonate (HCO3-) concentration. It is not directly caused by hyperventilation but is often associated with conditions such as excessive vomiting or excessive bicarbonate intake.
C. Metabolic Acidosis:
Explanation: Metabolic acidosis is characterized by a decrease in blood pH and bicarbonate concentration. It is not directly caused by hyperventilation but may result from conditions such as diabetic ketoacidosis or lactic acidosis.
D. Respiratory Alkalosis:
Explanation: Hyperventilation is the most common cause of respiratory alkalosis. During hyperventilation, there is an excessive loss of carbon dioxide (CO2) through rapid breathing, leading to a decrease in the partial pressure of carbon dioxide (PaCO2) in the blood. This results in an increase in blood pH, causing an alkalotic state.
Correct Answer is A
Explanation
A. Respiratory acidosis:
This occurs when there is inadequate removal of carbon dioxide (CO2) by the respiratory system. In the case of the patient post-op from knee surgery receiving Morphine, the opioid can cause respiratory depression, leading to the retention of CO2 and the development of respiratory acidosis. Signs include a decreased respiratory rate and drowsiness.
B. Hypokalemia:
This is a condition characterized by low levels of potassium in the blood. While opioids can cause constipation, they are not directly associated with hypokalemia.
C. Metabolic acidosis:
This occurs when there is an increase in acid production or a loss of bicarbonate, leading to an imbalance in the body's acid-base status. The symptoms of metabolic acidosis are not typically associated with opioid use.
D. Respiratory alkalosis:
This occurs when there is excessive elimination of CO2, leading to decreased carbon dioxide levels in the blood. Opioids, especially in higher doses, are more likely to cause respiratory depression and acidosis rather than alkalosis. The patient's low respiratory rate and drowsiness are indicative of respiratory acidosis rather than alkalosis.
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