Overview


GE SpO2 has history of innovation for more than 20 years through the legacy of Datex-Ohmeda*, and provides Advanced Plethysmographic Technologies: 

SPIa: Nociception-antinociception balance during general anaesthesia

SpO2: Reliable and robust assessment of pulse oximetry parameters 

a) Surgical Pleth Index is to be used for unconscious and fully anesthetized adult (>18 years old) patients during general anesthesia.
SPI is not available in all countries – Not cleared Not available for sale in USA

GE SPiO2 offers multiple clinical measurements (Surgical Pleth Index and SpO2) with a single sensor.

Benefits

All adult TruSignal* finger sensors provide the plethysmographic signal from the patient for the SPIa measurement.

SpO2:

  • TruSignal SpO2 technology’s accuracy exceeds the requirements mandated by ISO 9919 pulse oximetry standard in all conditions

  • Compared to existing alternative technologies, GE SpO2 algorithms have shown high quality SpO2 and Pulse Rate measurements during motion conditions

SPI:

Continuous non-invasive SPI monitoring during general anaesthesia has shown in referenced studies to result:

  • 22.7% to 25% reduction in remifentanil consumption1,2,3

  • 85% reduction of peri-operative unwanted hemodynamic events1,3

  • Faster patient recovery (eyes opening and patient extubation times shortened)2,3

SPI index is part of the Adequacy of Anesthesia (AoA) concept which helps the clinician to assess patient’s responses to anesthetic agents, opioids and NMBAs during general anesthesia. 


a) Surgical Pleth Index is to be used for unconscious and fully anesthetized adult (>18 years old) patients during general anesthesia.
SPI is not available in all countries – Not cleared Not available for sale in USA  

GE SPiO2 offers multiple clinical measurements (Surgical Pleth Index and SpO2) with a single sensor. (1) Chen X et al. Comparison of Surgical Stress Index-guided Analgesia with Standard Clinical Practice during Routine General Anesthesia. A Pilot Study; 112:1175 -83 2010.
(2) Bergmann I. et al. Surgical pleth index-guided remifentanil administration reduces remifentanil and propofol consumption and shortens recovery times in outpatient anaesthesia. Br.J.Anaesth. 2013, Apr: 110(4): 622-8.
(3) Gruenewald M., Ilies C. Monitoring the nociception-antinociception balance. Best Pract Res Clin Anaesthesiol. 2013 Jun; 27(2): 235-47.

Technology

Combining signal acquisition and signal processing excellence, GEHC systems offer continuous non-invasive monitoring of advanced photoplethysmographic parameters. 

SpO2:

  • GE algorithms apply specific calibration curves based on each sensor’s optical characteristics. 

  • Each GE TruSignal sensor is individually tested and calibrated.

  • GE SPO2 monitors and sensors are medical devices and are CE Marked in accordance with the Medical Device Directive 93/42/EEC.

SPIa:

  • Surgical Pleth Indexb is processed from finger plethysmographic hemodynamic features (PPG waveform pulse rate and amplitude). 

  • SPI monitors the adult patient’s hemodynamic responses to surgical stimuli and analgesic medications.


Surgical Pleth Index has been shown in referenced studies to have:

  • Significant correlation with surgical stress level1,2,3

  • Significant correlation with remifentanil amount2,4

  • Better sensitivity to surgical stimuli than HR, BP, or RE5 

  • Better correlation to opioid amount than HR, PPGA, RE, or SE6 

  • No sensitivity to the variation of hypnotic drug amount6


1. Sadhasivam S et al. Pharmacogenomics of opioids and perioperative pain management.Pharmacogenomics. 2012 Nov;13(15):1719-40. doi: 10.2217/pgs.12.152.
2. Wennervirta J. et al. Surgical Stress Index as a Measure of Nociception/Antinociception Balance During General Anesthesia. Acta Anaesthesiol Scand 52, 1038-1045 (2008).
3. Chen X et al. Comparison of Surgical Stress Index-guided Analgesia with Standard Clinical Practice during Routine General Anesthesia. A Pilot Study. Anesthesiology; 112:1175– 83 2010.
4. Struys, MMR F. et al. Changes in a surgical stress index in response to standardized pain stimuli during propofol-remifentanil infusion. British Journal of Anaesth 99(3), 359-367 (2007).
5. Huiku M., et al. Assessment of surgical stress during general anaesthesia. British Journal of Anaesth 98, 447-455 (2007).
6. Ahonen J. et al. Surgical Stress Index During Gynaecological Laparoscopy. British Journal of Anaesth. 98, 456-461 (2007).


a) Surgical Pleth Index is to be used for unconscious and fully anesthetized adult (>18 years old) patients during general anesthesia.
b) SPI monitoring can be performed with CARESCAPE* modular monitors and GE SpO2 technology. SPI measurement site should always be the finger.
SPI is not available in all countries – Not cleared Not available for sale in USA

GE SPiO2 offers multiple clinical measurements (Surgical Pleth Index and SpO2) with a single sensor.

Product Literature

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