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Respiratory acidosis occurs when the arterial partial pressure of carbon dioxide (Pa CO2) is elevated above the normal range (>44 mm Hg) leading to a blood pH lower than 7.35.By definition, the diagnosis of respiratory acidosis requires measurement of Pa CO2 and pH. When the diagnosis is made, the underlying cause should be thoroughly investigated.
1 Lactic acidosis occurs when there is too much lactic acid in your body. 2  Many things can cause a buildup of lactic acid. 3  These include chronic alcohol use, heart failure, cancer, seizures, liver failure, prolonged lack of oxygen, and low blood sugar.here are two types of acidosis--metabolic and respiratory. Metabolic acidosis occurs when your kidneys canât get rid of acid buildup or when your body gets rid of too much base. Bases neutralize acids, and vice versa.