Arterial Blood Gases
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At the end of this lecture you will be able to Interpret: Respiratory Acidosis Respiratory Alkalosis Metabolic Acidosis Metabolic Alkalosis Respiratory Compensation Metabolic Compensation Partial Compensated Metabolic Acidosis Complete Compensated Metabolic Acidosis Partial Compensated Metabolic Alkalosis Complete Compensated Metabolic Alkalosis
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Arterial Blood Gases
- 1. Dr. Abid Ullah (PT) DPT (GU), BCST-MSK (RIU), MS-OMPT (RIU), PgD.HM (HSA) Physiotherapist LRH-MTI, Peshawar Arterial Blood Gases Interpretation
- 2. Arterial Blood Gases Interpretation At the end of this lecture you will be able to Interpret: • Respiratory Acidosis • Respiratory Alkalosis • Metabolic Acidosis • Metabolic Alkalosis • Respiratory Compensation • Metabolic Compensation • Partial Compensated Metabolic Acidosis • Complete Compensated Metabolic Acidosis • Partial Compensated Metabolic Alkalosis • Complete Compensated Metabolic Alkalosis
- 3. Arterial Blood Gases Interpretation Normal values PH = 7.35 – 7.45 PCO2 = 35 -45 mmHg HCOˉ3 = 22 -26 mEq/L PO2 = 80 – 100 mmHg CO2 + H2O H2CO2 HCOˉ3 + H + Respiratory Metabolic Respiratory Acidosis Respiratory Alkalosis PH PCO2 HCOˉ3 = Normal PH PCO2 HCOˉ3 = Normal Metabolic Acidosis PH HCOˉ3 PCO2 = Normal Metabolic Alkalosis PH HCOˉ3 PCO2 = Normal PH = 7.31 PCO2 = 60 mmHg HCOˉ3 = 24 mEq/L Respiratory Acidosis PH = 7.48 PCO2 = 30 mmHg HCOˉ3 = 24 mEq/L Respiratory Alkalosis PH = 7.31 PCO2 = 40 mmHg HCOˉ3 = 17 mEq/L Metabolic Acidosis PH = 7.48 PCO2 = 42 mmHg HCOˉ3 = 30 mEq/L Metabolic Alkalosis
- 4. Respiratory Compensation Normal values PH = 7.35 – 7.45 PCO2 = 35 -45 mmHg HCOˉ3 = 22 -26 mEq/L PO2 = 80 – 100 mmHg CO2 + H2O H2CO2 HCOˉ3 + H + Respiratory Metabolic Respiratory Compensation Metabolic Acidosis PH HCOˉ3 PCO2 Partial compensated PH = Near Normal Complete compensated PH = Normal Hyperventilated Metabolic Alkalosis PH HCOˉ3 PCO2 Hypoventilated Partial compensated PH = Near Normal Complete compensated PH = Normal PH = 7.31 PCO2 = 18 mmHg HCOˉ3 = 19 mEq/L Partially Compensated Metabolic Acidosis PH = 7.49 PCO2 = 60 mmHg HCOˉ3 = 30 mEq/L Partially Compensated Metabolic Alkalosis
- 5. Renal Compensation Normal values PH = 7.35 – 7.45 PCO2 = 35 -45 mmHg HCOˉ3 = 22 -26 mEq/L PO2 = 80 – 100 mmHg CO2 + H2O H2CO2 HCOˉ3 + H + Respiratory Metabolic Renal Compensation Respiratory Acidosis PH HCOˉ3 PCO2 Partial compensated PH = Near Normal Complete compensated PH = Normal Respiratory Alkalosis PH HCOˉ3 PCO2 Partial compensated PH = Near Normal Complete compensated PH = Normal PH = 7.31 PCO2 = 60 mmHg HCOˉ3 = 35 mEq/L Partially Compensated Respiratory Acidosis PH = 7.49 PCO2 = 25 mmHg HCOˉ3 = 16 mEq/L Partially Compensated Respiratory Alkalosis
- 6. Combined Respiratory & Metabolic (Acidosis & Alkalosis) Normal values PH = 7.35 – 7.45 PCO2 = 35 -45 mmHg HCOˉ3 = 22 -26 mEq/L PO2 = 80 – 100 mmHg CO2 + H2O H2CO2 HCOˉ3 + H + Respiratory Metabolic Combined Respiratory & Metabolic Acidosis PH PCO2 HCOˉ3 PH PCO2 HCOˉ3 PH = 7.31 PCO2 = 60 mmHg HCOˉ3 = 19 mEq/L Combined Respiratory & Metabolic Acidosis PH = 7.49 PCO2 = 20 mmHg HCOˉ3 = 30 mEq/L Combined Respiratory & Metabolic Alkalosis Combined Respiratory & Metabolic Alkalosis
- 7. Complete Compensation interpretation Normal values PH = 7.35 – 7.45 PCO2 = 35 -45 mmHg HCOˉ3 = 22 -26 mEq/L PO2 = 80 – 100 mmHg CO2 + H2O H2CO2 HCOˉ3 + H + Respiratory Metabolic PH = 7.43 PCO2 = 25 mmHg HCOˉ3 = 19 mEq/L Compensated Respiratory Alkalosis PH = 7.37 PCO2 = 60 mmHg HCOˉ3 = 30 mEq/L Compensated Respiratory Acidosis 7.35 7.36 7.37 7.38 3.39 Acidotic Side 7.41 7.42 7.43 7.44 7.45 Alkalotic Side PH = 7.43 PCO2 = 60 mmHg HCOˉ3 = 30 mEq/L Compensated Metabolic Alkalosis PH = 7.37 PCO2 = 25 mmHg HCOˉ3 = 19 mEq/L Compensated Respiratory Acidosis