Renal Quiz #13Acid-Base Physiology

1. A 22-year-old man is brought to the emergency department following a motor vehicle accident. He is tachypneic and appears to be in significant distress. Arterial blood gas analysis reveals pH 7.25, PaCO2 30 mmHg, and HCO3- 15 mEq/L. Which of the following best describes this patient's acid-base status? 

Question 1 of 5

2. A 58-year-old woman with a history of chronic obstructive pulmonary disease (COPD) presents with confusion and lethargy. Arterial blood gas analysis reveals pH 7.32, PaCO2 58 mmHg, and HCO3- 30 mEq/L. Which of the following best characterizes her acid-base disturbance? 

Question 2 of 5

3. A patient is admitted to the hospital with severe diarrhea. Arterial blood gas shows pH 7.48, PaCO2 45 mmHg, and HCO3- 32 mEq/L. Which of the following mechanisms is most likely compensating for her primary acid-base disorder? 

Question 3 of 5

4. A 40-year-old man with a history of alcoholism presents to the emergency department with vomiting and abdominal pain. An arterial blood gas analysis reveals pH 7.55, PaCO2 40 mmHg, and HCO3- 32 mEq/L. Which of the following is the most likely cause of his acid-base disorder? 

Question 4 of 5

5. A 25-year-old woman is found unconscious in her apartment. She has a history of type 1 diabetes mellitus. Emergency responders note a fruity odor on her breath. Laboratory tests reveal high blood glucose and ketones. Arterial blood gas analysis shows pH 7.30, PaCO2 20 mmHg, and HCO3- 10 mEq/L. What is the primary acid-base disturbance? 

Question 5 of 5


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