An adolescent who is brought to the emergency department (ED) with a fever and persistent lower right quadrant abdominal pain is anxious, fearful, and hyperventilating. The nurse anticipates the client developing which acid-base imbalance?

The correct answer is choice b. Respiratory alkalosis. Choice A rationale: Metabolic alkalosis occurs when there is a loss of acid or an increase in bicarbonate in the body. This can be due to vomiting, diuretic use, or excessive bicarbonate intake. It is not typically associated with hyperventilation. Choice B rationale: Respiratory alkalosis is caused by hyperventilation, which leads to a decrease in carbon dioxide (CO2) levels in the blood. This condition is often triggered by anxiety, fear, pain, or fever, all of which are present in this adolescent. Choice C rationale: Metabolic acidosis occurs when there is an accumulation of acid or a loss of bicarbonate in the body. This can be due to conditions like diabetic ketoacidosis, renal failure, or severe diarrhea. It is not typically associated with hyperventilation. Choice D rationale: Respiratory acidosis occurs when there is an accumulation of CO2 in the blood due to hypoventilation or impaired lung function. This condition is not consistent with hyperventilation, which reduces CO2 levels.