Crit Care Resusc
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Near-infrared spectroscopy (NIRS) has been used in clinical practice to assess regional cerebral tissue oxygen saturation (StcO2). There is no evidence whether repeated use of the same sensor affects StcO2 measurements. We aimed to assess whether there was a significant systematic decrease or increase in StcO2 when NIRS sensors were reused. ⋯ Repeated use of NIRS sensors measured StcO2 in different individuals for up to 10 days. There were no significant, systematic, persistent or progressive changes in StcO2 with extended use over time. Our findings suggest that StcO2 does not change with sensor reuse for up to 10 days.