Fig. 3.
![Bias plot of (Spo2 − Sao2) across different ranges of oxyhemoglobin saturation (Sao2). Bias is calculated as Spo2 (oxyhemoglobin saturation as measured by the indicated pulse oximeter) minus Sao2 (oxyhemoglobin saturation as measured by the Radiometer ABL-90 [Denmark] multiwavelength oximetry of arterial blood). Bias values are separated by perfusion index (PI). PI < 2 (blue triangle) and PI ≥ 2 (red star). Dashed horizontal lines are the upper and lower limits of agreement.](https://asa2.silverchair-cdn.com/asa2/content_public/journal/anesthesiology/128/3/10.1097_aln.0000000000002002/2/16ff03.png?Expires=1716577182&Signature=aXUx76wUQGtkHZzhUEDU5HLiaLG-B1vMsZqdkr8TRQADPpBHmq3dwl0gy3Ace7892qX2MiKzux503xkJyCSlYtFTkM0D-nyBgYCsQTIDUEtbYLReNDINwVWlyBxEa4aSTg2BzuflKr6qKDo3OuL0d5PGV68g4tSq6Oj~VMT1-VSuTN5MGYUN7cx90r-NcxZKbs6cfwYA~1LjTfQNJtqr0V4UEF6eSGryNCFKU9h2BmD-11GZysbbUKE4X1XUgaZngO0pmCodTxlNL3ZcUILZkOS7sQzlQrAys6PdFLMsmWSKTC7qNSRqFD-~aFmT3RPPTOmHL1h~S853MmcB9YL7EQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Bias plot of (Spo2 − Sao2) across different ranges of oxyhemoglobin saturation (Sao2). Bias is calculated as Spo2 (oxyhemoglobin saturation as measured by the indicated pulse oximeter) minus Sao2 (oxyhemoglobin saturation as measured by the Radiometer ABL-90 [Denmark] multiwavelength oximetry of arterial blood). Bias values are separated by perfusion index (PI). PI < 2 (blue triangle) and PI ≥ 2 (red star). Dashed horizontal lines are the upper and lower limits of agreement.
