Metabolic Alkalosis: Lab Test

Acid-base status

  • PH ↑
  • Bicabonate (HCO3-) current ↑
  • Bicarbonate standard ↑
  • Basenexcess (base excess) – normal, increased with partial compensation.
  • Blood carbon dioxide partial pressure (pCO2) – normal [after partial compensation by decreased respiration – increased (hypercapnia)]

Other possible examinations

  • Blood oxygen partial pressure (pO2) – unchanged.
  • Oxygen saturation (SpO2)
Acidoses and alkaloses
Acidosis Alkalosis
metabolic respiratory metabolic respiratory
comp. decomp. comp. decomp. comp. decomp. comp. decomp.
pH normal < 7,36 normal < 7,36 normal > 7,44 normal > 7,44
HCO3- ↓ ↓ ↑ normal to (↑) ↑ ↑ ↓ normal to (↓)
pCO2 ↓ normal to (↓) ↑ ↑ ↑ normal to (↑) ↓ ↓
pO2 → → ↓ ↓ → → → ↓

Legend

  • Comp. (= compensated)
  • Decomp. (= decompensated)
  • ↓ (= decreased), ↑ (= increased), → (= unchanged).