Question: A 45-year-old man is admitted with severe vomiting for the past 24 hours. His arterial blood gas (ABG) results are as follows:
pH: 7.52
PaCO₂: 6.4 kPa
HCO₃⁻: 38 mmol/L
What is the most likely acid-base disturbance?
A) Metabolic acidosis B) Metabolic alkalosis C) Respiratory acidosis D) Respiratory alkalosis E) Mixed metabolic and respiratory
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Question:
A 45-year-old man is admitted with severe vomiting for the past 24 hours. His arterial blood gas (ABG) results are as follows:
pH: 7.52
PaCO₂: 6.4 kPa
HCO₃⁻: 38 mmol/L
What is the most likely acid-base disturbance?
B) Metabolic alkalosis
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A 28-year-old woman presents to the emergency department after a panic attack. She reports rapid breathing and feeling lightheaded. On examination, her respiratory rate is 28 breaths per minute, and her oxygen saturation is 98% on room air. Arterial blood gas results are as follows:
pH: 7.48
PaCO₂: 3.5 kPa
HCO₃⁻: 22 mmol/L
PaO₂: 12 kPa
What is the most likely acid-base disturbance?
A) Metabolic acidosis B) Respiratory acidosis C) Respiratory alkalosis D) Metabolic alkalosis E) Mixed acidosis
C) Respiratory alkalosis