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Card 8 / 13:
Case Study: Bob is a 64-year-old male admitted to the emergency room for asthma. His laboratory results are as follows: pH 7.31, pCO 2 higher than normal, and total HCO 3 – also higher than normal. Classify his acid-base balance as acidosis or alkalosis, and as metabolic or respiratory. Is there evidence of compensation? Propose the mechanism by which asthma contributed to the lab results seen.
Respiratory acidosis is present as evidenced by the decreased pH and increased pCO 2 , with some compensation as shown by the increased total HCO 3 – . His asthma has compromised his respiratory functions, and excess CO 2 is being retained in his blood.
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