Author | Lynda Sutliff, RN


Use the Earlobe for Pulse Oximetry

October 01, 2006

When using pulse oximetry to evaluate patients with Buerger disease, Raynaud phenomenon, a history of heavy smoking, or other conditions that cause vasoconstriction of the fingers, place the probe on the earlobe. In such patients, this gives a more accurate measurement of arterial hemoglobin saturation than does a digital placement.