A medical condition where the blood becomes too acidic, with a pH lower than the normal range of 7.35-7.45.
From Latin 'acidus' (sour) and Greek 'haima' (blood), coined in medical terminology to describe abnormal blood chemistry. The spelling variation 'acidemia' (without the 'a') is the more common American usage.
Doctors use the blood pH scale constantly—acidemia is one side of the balance (the other side is alkalemia), and both can be life-threatening if severe, which is why ICUs monitor this so carefully.
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