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Pulmonology · Critical Care

Bohr Dead Space Fraction (Vd/Vt) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Result

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Formula inputs

  • Bohr Paco2 Mmhg (mmHg)Accepted range: 20 to 80
  • Bohr Peco2 Mmhg (mmHg)Accepted range: 10 to 70

Primary source

Bohr C. Über die Lungenatmung. Skand Arch Physiol. DOI: 10.1111/j.1748-1716.1891.tb00105.x. PMID: 10470572. Scope: Physiological dead space fraction Vd/Vt = (PaCO₂ − PeCO₂) / PaCO₂. (1999)

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