A COPD patient was having pedal oedema for which thiazides were prescribed. Since he was complaining of excessive sleepiness an ABG sample was taken. Repo is pH= 7.42, pCO2= 67 mmHg and HCO3 = 42mEq with Na =140 mEq, K = 3.0, CL- =88 mEq. What is the diagnosis?
Correct Answer: Metabolic alkalosis with respiratory acidosis
Description: pCO2 - || 67 mmHg (N = 40 mmHg) Every 10 mm | pCO2= | HCO3- 1 meq 27mm |pCO2 = |HCO3- 2.7 meq CO2 retention : Respiratory acidosis Thiazides leads to dehydration which | GFR - | aldosterone- hypokalemic alkalosis.
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