Acid/Base Relationship H,O+CO, f H,CO t HCO,+ H+
H2O + CO2 H2CO3 HCO3 + H+ Acid/Base Relationship
Normal aBg values 7.35-7.45 PCO 35-45mmH g PO 80-100mmHg HCO3 22-26mmo/L BE 2-+2 Sao >95%
Normal ABG values pH 7.35 – 7.45 PCO2 35 – 45 mmHg PO2 80 – 100 mmHg HCO3 22 – 26 mmol/L BE -2 - +2 SaO2 >95%
A CidOSiS Alkalosis pH<7.35 pH>7.45 PCO >45 PCO, <35 HCO, <22 HCO,>26
Acidosis Alkalosis pH < 7.35 PCO2 > 45 HCO3 < 22 pH > 7.45 PCO2 < 35 HCO3 > 26
Respiratory acidosis Think of co as an acid failure of the lungs to exhale adequate cO2 pH<735 PCO2>45 CO2+H2CO3→↓pH
Respiratory Acidosis ➢ Think of CO2 as an acid ➢ failure of the lungs to exhale adequate CO2 ➢ pH < 7.35 ➢ PCO2 > 45 ➢ CO2 + H2CO3 pH
Causes of respiratory acidosis emphysema drug overdose narcosis respiratory arrest airway obstruction
Causes of Respiratory Acidosis ➢ emphysema ➢ drug overdose ➢ narcosis ➢ respiratory arrest ➢ airway obstruction