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Winters' formula

Winters' formula for respiratory compensation in metabolic acidosis

Checks whether respiratory compensation for a metabolic acidosis is appropriate. Score = measured minus expected (1.5xHCO3+8) arterial pCO2.

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Appears in these tutorials

See this calculator worked on a real patient, then read the teaching around it.

  • Acid-base disorders15_100
    Worked example: Chris Bailey, 81
  • Metabolic acidosis15_101
    Worked example: Renata Fontana, 19
Celsus MedEd - Decoding the Matrix of Medicine