Oxyhemoglobin Disassociation Curve

Oxyhemoglobin Dissociation Curve

• The shape of the curve demonstrates that at 90% saturation, the patient is at risk of critically low oxygen levels (< 40 mm Hg PaO2) if even a brief period of time elapses without reoxygenation.
• Patients will take a much longer time to desaturate from 100% to 90% than to go from 90% to 70%

Ref: www.medscape.com