Tic tac toe grid to type in2/17/2024 ![]() ![]() Any normal blood pH that falls between 7.35-7.40 is NORMAL but on the “acidotic” side and any normal blood pH that falls between 7.40-7.45 is on the “alkalotic” side. Let’s talk about blood pH for a moment because if FULL compensation presents there will NOT be a tic tac toe and you will have to look closely at the blood pH to determine which system is causing the issue and which system is trying to “fix” the issue (hence compensate).Ī normal blood pH is 7.35-7.45. Here is a guide to help you understand it: For HCO3 anything less than 22 is an acid and anything greater than 26 is a base. For CO2 (NOTE: it is the opposite) anything less than 35 is a base and anything greater than 45 is an acid. For pH anything less than 7.35 is an acid and anything greater than 7.45 is a base. Now to determine when these values are considered an acid or base. HCO3: 22-26 (HCO3 lab value ALWAYS indicates a METABOLIC issue).CO2: 35-45 (CO2 lab value ALWAYS indicates a RESPIRATORY issue).Here they are and their normal numeric values (commit them to memory): When you are analyzing ABG results there are three things to look for when trying to find out if your patient is in respiratory or metabolic acidosis or alkalosis. Metabolic Alkalosis (uncompensated, partially compensated, or fully compensated). ![]()
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