Venous Hemoglobin Oxygen Saturation

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Frequently Asked Questions

Arterial Hemoglobin Oxygen Saturation

Question: How is InSpectra™ StO₂ different from SpO₂ and SaO₂ ?

Blood Flow

Question: Can the InSpectra^TM StO₂ Tissue Oxygenation Monitor measure blood flow?

Blood Substitutes

Question: How is StO₂ affected by blood substitutes?

Edema

Question: How does edema affect StO₂?

Hypothermia

Question: How is StO₂ affected by hypothermia?

Massive Blood Transfusion

Question: What is the utility of InSpectra™ StO₂ in Massive Blood Transfusion trauma patients?

Myoglobin

Question: How is StO₂ affected by myoglobin?

THI Display

Question: What does the THI display mean and what can I do with it?

Vasoactive Medications

Question: How is StO₂ affected by vasoactive medications?

Venous Hemoglobin Oxygen Saturation

Question: How is InSpectra™ StO₂ different from SvO₂ and ScvO₂ ?

The InSpectra™ StO₂ Tissue Oxygenation Monitor provides a noninvasive, continuous, real-time, and direct measurement of hemoglobin oxygen saturation in tissue (StO₂), providing trauma teams the ability to measure tissue oxygen saturation and monitor it during resuscitation. It is the only perfusion status monitor designed for trauma environments. The InSpectra StO₂ Tissue Oxygenation Monitor uses near infrared light to illuminate tissue, and then analyzes the returned light to produce a quantitative measurement of oxygen saturation in the tissue's microcirculation.

The StO₂ Trauma Study researched the role that tissue oxygen saturation monitoring could play in hemorrhagic shock and resuscitation. Study results demonstrate that StO₂ measurements less than 75% may indicate serious hypoperfusion in trauma patients and that StO₂ functions as well as base deficit in indicating hypoperfusion in trauma patients.