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Card 9 / 13:
Case Study: Kim is a 38-year-old women admitted to the hospital for bulimia. Her laboratory results are as follows: pH 7.48, pCO 2 in the normal range, and total HCO 3 – higher than normal. Classify her acid-base balance as acidosis or alkalosis, and as metabolic or respiratory. Is there evidence of compensation? Propose the mechanism by which bulimia contributed to the lab results seen.
Metabolic alkalosis is present as evidenced by the increased pH and increased HCO 3 – , without compensation as seen in the normal pCO 2 . The bulimia has caused excessive loss of hydrochloric acid from the stomach and a loss of hydrogen ions from the body, resulting in an excess of bicarbonate ions in the blood.
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