Intermediate
Technical
In the Industry Vocabulary Test
cerebral oximetry
Non-invasive monitoring technique measuring regional cerebral oxygen saturation during cardiac surgery.
Full Definition
A continuous, non-invasive monitoring modality that uses near-infrared spectroscopy to measure regional oxygen saturation in cerebral tissue (rScO2). Sensors placed on the forehead provide real-time assessment of cerebral oxygenation, helping detect cerebral hypoperfusion or ischemia during cardiac surgery. Values typically range from 55-75%, with decreases >20% from baseline or absolute values <50% being concerning and potentially requiring intervention to optimize cerebral perfusion.
Usage
Usage note: Values reported as percentages; include bilateral readings when available.
In Context
- "Cerebral oximetry values remained stable at 68-72% throughout the procedure." — Anesthesia record
- "A decrease in cerebral oximetry to 45% prompted immediate assessment of perfusion parameters." — Intraoperative note
Also known as
cerebral NIRS
rScO2 monitoring
brain oximetry
Don't confuse with
pulse oximetry
jugular venous saturation