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Case Reports  |   November 1989
The Penumbra Effect: Vasomotion-Dependent Pulse Oximeter Artifact due to Probe Malposition
Author Affiliations & Notes
  • JOSEPH F. KELLEHER, M.D., M.A.
    *
  • RON H. RUFF, M.D.
  • *Resident in Anesthesia.
  • Staff Anesthesiologist.
Article Information
Case Reports
Case Reports   |   November 1989
The Penumbra Effect: Vasomotion-Dependent Pulse Oximeter Artifact due to Probe Malposition
Anesthesiology 11 1989, Vol.71, 787-790. doi:
Anesthesiology 11 1989, Vol.71, 787-790. doi:
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