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partial pressure of oxygen in arterial blood (PaO2)

Partial pressure of oxygen in arterial blood (PaO2). Normal range: - 83-108 mm Hg - PaO2 tends to decline with age: - For age-related decline, estimate using the equation: 100 - age/3 (i.e. for age 90, PaO2 = 70 mm Hg)# # grossly over simplified, but may have some use Notes: - a PaO2 of 70 mm Hg is generally satisfactory for air travel* or travel to 8000 feet in elevation. * Airline cabins are pressurized to an atmosphere equivalent to about 8000 feet in elevation

Related

alveolar oxygen pressure (pAO2)

General

partial pressure of oxygen in blood

References

  1. Diagnostic History & Physical Examination in Medicine, Chan & Winkle, Current Clinical Strategies, Laguna Hills, CA 1996
  2. Mader S. In: Intensive Course in Geriatric Medicine & Board Review, Marina Del Ray, CA, Sept 12-15, 2001

Component-of

arterial blood gas (ABG) partial pressure of oxygen in arterial blood/fractional inspired oxygen; PaO2/FiO2