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What is ABG analysis of a patient on ventilator, shows decreased pCO2, normal pO2, pH 7.5, diagnosis is - and explain in detail?
First step

Determine whether academia or alkalemia is present by observing the pH.
pH is increased, indicating alkalosis

Second step

Inspect HCO3- /CO2 to determine the cause of academia or alkalemia
pCO2 is decreased indicating respiratory alkalosis.