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GCN N170 ABG's #1
N170 ABG Interpretation - Beginning
| Question | Answer |
|---|---|
| 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 |