ABGs are done in the ICU multiple times daily. The acid/base balance within the body enables the body to perform its most basic functions; we often directly affect this balance when someone is on a ventilator or recieving exogenous bicarb.
Practice interpreting ABGs: click here
FCCS Ch. 6 (part of it)
Acid-Base, Fluid, Electrolytes made ridiculously simple (PRIMARY RESOURCE)