## Normal arterial blood gas values and serum electrolytes mnemonic

Know the** normal pH of blood 7.35 - 7.45**.. That’s all you need to remember I promise!

Take the numbers after the decimal, **35 - 45; and that’s your pCO2.**

Divide 45 by 2, approx **22; and that’s your bicarbonate levels.**

Multiply 45 by 2, that is, **90; and that’s your pO2.**

So in summary -**pH: **7.35 - 7.45**PCO2: **33 - 45 mm Hg**PO2: **75 - 105 mm Hg**Serum bicarbonate:** 22 - 28 mEq/L

That’s all!

Eid mubarak to everyone :)