Blood Gas Interpretation
Uncompensated Metabolic Alkalosis [SIG003US]
This is the blood gas result for Boris Medvedev for scenario SIG003US
Clinical Picture
- 40-year-old male presenting with vomiting
- Patient is alert and responds appropriately; generally unwell
- Known history of alcohol use disorder
- Tachycardic and hypotensive
Findings
- Sample type: Arterial
- pH: 7.49
- PaCO2: 44
- HCO3: 32
- Base excess: 8
- PaO2: 90
- Sats: 96
- Acid-base balance: Abnormal
- Other parameters: Hyponatremia and hypokalemia
Summary
- pH, HCO3, and base excess are not within normal limits on this blood gas (alkalotic). Sodium and potassium are not within normal limits.
- The alkalotic bicarbonate (HCO3) and base excess match with the alkalotic pH, consistent with a metabolic alkalosis. The normal PaCO2 indicates compensation has not yet occurred; therefore, this is an uncompensated metabolic alkalosis, such as that commonly found in persistent vomiting.