Cerebral Tissue Oxygen Saturation
Cerebral Tissue Oxygen Saturation - Related Videos
01:19
Special considerations while measuring oxygen saturation
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2024
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention. Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 28 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
01:59
Solution Equilibrium and Saturation
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2020
Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
11:35
Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
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Cited by 16 •
2010
A dual-mode imaging system was developed for non-contact assessment of cutaneous tissue oxygenation and vascular function.
01:21
Thioflavin-S Staining of Amyloid-Beta Aggregation in Cerebral Hypoperfused Mouse Brain Tissue
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2025
MCCH is characterized by reduced blood flow to the brain. This limits oxygen and nutrient supply to the endothelial cell layer of cerebral blood vessels, damaging the cells.
FAQs
The relative absorption of light by oxyhemoglobin and deoxyhemoglobin provides the signal basis for estimating oxygenation in tissue reached by near-infrared light. As these hemoglobin forms contribute different signals, their relationship is used to derive a saturation value. Because the light travels through the scalp and skull, the result represents the sampled cerebral region rather than an unspecified whole-brain average.
Considering both hemoglobin forms links the measurement to the balance between oxygen delivery and consumption. A change in their relative signals can therefore indicate that the oxygenation state of the sampled tissue has shifted, even when the clinical question concerns perfusion or oxygen supply. This relationship makes the measure useful for following physiological changes over time.
Trend monitoring adds temporal information that a single value cannot provide. Repeated cerebral tissue oxygen saturation measurements can reveal whether regional oxygenation is stable, changing, or recovering during a clinical event. In medicine, this pattern may help clinicians recognize altered cerebral perfusion or oxygen supply and consider intervention while the change is occurring.
In anesthesia, cardiac or vascular surgery, and critical care, clinicians can follow cerebral tissue oxygen saturation as a regional oxygenation signal during periods when cerebral perfusion or oxygen supply may change. They examine its values over time rather than treating the measurement as a static description. Observed trends can support recognition of physiological deterioration and inform timely clinical attention.
Near-infrared spectroscopy evaluates light signals from tissue reached after passing through the scalp and skull, so the resulting value reflects a particular sampled cerebral region. This regional emphasis helps clinicians and researchers connect changes in the measurement with local cerebral oxygenation rather than assuming that every brain area has the same oxygen supply or consumption pattern.
Researchers can use these measurements to study brain physiology, examine how treatments affect cerebral oxygenation, and evaluate neurological risk. Because the technique provides a noninvasive estimate of regional oxygenation, investigators can follow changes in the sampled tissue during relevant clinical or experimental conditions. The resulting trends help characterize oxygen supply and consumption in relation to the research question.