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GCN N170 ABG's #1

N170 ABG Interpretation - Beginning

QuestionAnswer
PaCO2 *partial pressure of CO2 *reflects adequacy of alveolar ventilation, regulated by lungs, alterations indicate resp component of acid base balance *normal values 35-45 mmHg
PaO2 normal values Normal value 80-100 mmHg Partial pressure of oxygen in plasma of arterial blood
PaO2 amount of oxygen available to bind with hemoglobin, amount of pressure exerted on O2 by plasma
SaO2 the percent of Hb saturated with O2, a calculated value (indirect measurement), calculated with pH and PaO2 (combination of O2 sat, PaO2, and Hb), indicates tissue oxygenation
HCO3- (bicarb) *normal 22-26 mEq/L (decreased in acidosis, increased in alkalosis)
pH *negative logarithm of H+ ion concentration in mEq/L (as H+ ion concentration increases, pH decreases) *normal values 7.35 -7.45 (less is acidotic, more is alkalotic)
HCO3 Abbreviation for bicarbonate. A measure of metabolic component of acid base balanceNormal level = 22-26mEq/L
Sp02 Oxygenation saturation = % hgb saturated with oxygen and accounts for 97% of the oxygen in the bloodNormal value = 95-98%
BE A calculated value of bicarbonate levels which is reflective of the metabolic component of acid base balance= base excess Normal value -2 to +2 mEq/L
Acidosis pH <7.35
pH >7.45 Alkalosis
Respiratory Acidosis pH<7.35 PaCO2 >45“see saw”
Respiratory Alkalosis pH >7.45 PaC02 <35 “see saw”
Metabolic Acidosis pH <7.35 HC03 < 22mEQ/L
Metabolic alkalosis pH >7.45 HCO3 >26 mEq/L
Created by: mmaze