A nurse is caring for a client who has COPD. The nurse should identify that the client is at risk for which of the following acid-base imbalances?

Choice A reason: Metabolic alkalosis is a condition in which the blood pH is elevated due to an excess of bicarbonate or a loss of acid. It can be caused by vomiting, diuretics, or excessive antacid intake. It is not associated with COPD.

Choice B reason: Respiratory acidosis is a condition in which the blood pH is lowered due to an accumulation of carbon dioxide. It can be caused by hypoventilation, airway obstruction, or lung diseases such as COPD. It is the most common acid-base imbalance in COPD patients.

Choice C reason: Respiratory alkalosis is a condition in which the blood pH is elevated due to a loss of carbon dioxide. It can be caused by hyperventilation, anxiety, fever, or aspirin overdose. It is not common in COPD patients.

Choice D reason: Metabolic acidosis is a condition in which the blood pH is lowered due to an excess of acid or a loss of bicarbonate. It can be caused by diabetic ketoacidosis, renal failure, or lactic acidosis. It is not directly related to COPD.

Choice A reason: Obtaining a prescription to administer insulin is an important action for the nurse to take, as insulin helps to lower the blood glucose level and reverse the metabolic acidosis caused by diabetic ketoacidosis. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.

Choice B reason: Obtaining a prescription for supplemental oxygen is the first action the nurse should take, as hypoxia is a life-threatening condition that can lead to tissue damage, organ failure, and death. The nurse should provide oxygen therapy to improve the client's oxygen saturation and prevent further complications.

Choice C reason: Obtaining a prescription to check the client's glucose level is a necessary action for the nurse to take, as glucose monitoring helps to evaluate the client's response to insulin therapy and guide further interventions. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.

Choice D reason: Obtaining a prescription to administer intravenous fluids is a beneficial action for the nurse to take, as fluid replacement helps to correct the dehydration, electrolyte imbalance, and hypotension caused by diabetic ketoacidosis. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.