Overview:

The Clinical Standard in Regional Oximetry

INVOS™ system adult sensors are used with the INVOS™ (In-Vivo Optical Spectroscopy) oximeter to noninvasively monitor site-specific adequacy of perfusion in the brain or body tissue directly beneath its sensors. This enables you to obtain real-time data on regional oxygen saturation (rSO2), which can detect site-specific ischemic complications even when systemic parameters or lab tests are within normal limits.([FOOTNOTE=Casati A, Fanelli G, Pietropaoli P, et al. Continuous monitoring of cerebral oxygen saturation in elderly patients undergoing major abdominal surgery minimizes brain exposure to potential hypoxia. Anesth Analg. 2005;101(3):740-747.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=143155]),([FOOTNOTE=Janelle GM, et al. Anesthesiology. 2002;96:1263-1265.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297363]),([FOOTNOTE=Blas ML, Lobato EB, Martin T. Noninvasive infrared spectroscopy as a monitor of retrograde cerebral perfusion during deep hypothermia. J Cardiothorac Vasc Anesth. 1999;13(2):244-245.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297323]),([FOOTNOTE=Prabhune A, Sehic A, Spence PA, Church T, Edmonds HL Jr. Cerebral oximetry provides early warning of oxygen delivery failure during cardiopulmonary bypass. J Cardiothorac Vasc Anesth. 2002;16(2):204-206.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297361])4

INVOS system adult sensors are applied to the skin’s surface and can be applied on up to four site-specific areas chosen by the care team. The sensors are user and patient friendly, making monitoring of ischemic threats to the brain and body safe and easy, while supplying the information the care team needs to assess and intervene accordingly. INVOS system adult sensors are applied to the skin’s surface and can be applied on up to four site-specific areas chosen by the care team.

Features:

Features

INOVS™ Cerebral/Somatic Oximetry Adult Sensor Features

  • Interrogation of the microvasculature using near infrared lighting
  • Noninvasive innovation
  • Dual wavelength design
  • For patients > 40 kg
  • Designed with medical-grade, hypoallergenic patient adhesive
  • Disposable; designed for single use
  • Non-sterile
  • Latex-free
Technology:

Reflect Site-Specific Tissue Perfusion Noninvasively

INVOS™ system technology gives you a noninvasive “window” to the body’s microvasculature; a direct and dynamic site of gas exchange that transports about half the body’s blood volume. Measuring blood oxygenation in the microvasculature results in sensitive and site-specific insights on perfusion adequacy or – with multi-sensor monitoring – perfusion distribution across the brain and body.

Unlike parameters that measure only venous or arterial blood, INVOS™ technology includes contributions from both in a 3:1 ratio, yielding a venous-weighted percent saturation. This provides real-time data about the balance or imbalance of oxygen supply and demand, thus reflecting venous oxygen reserve - the oxygen remaining after extraction by tissues and vital organs. Decreases in venous oxygen reserve can be a warning of developing pathology and deteriorating patient condition. Published adult data has shown that an rSO2 of 50 or a 20% decline from baseline are cause for concern and intervention, and an rSO2 of 40 or a 25% decline from baseline are associated with neurologic dysfunction and other adverse outcomes.([FOOTNOTE=Edmonds HL, Jr Ganzel BL, Austin EH 3rd. Cerebral oximetry for cardiac and vascular surgery. Semin Cardiothorac Vasc Anesth. 2004;8(2):147-166.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297413]),([FOOTNOTE=Alexander HC, Kronenefeld MA, Dance GR. Reduced postoperative length of stay may result from using cerebral oximetry monitoring to guide treatment. Ann Thorac Surg. 2002;73:373-C.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=573245]),([FOOTNOTE=Cho H, Nemoto EM, Yonas H, Balzer J, Sclabassi RJ. Cerebral monitoring by means of oximetry and somatosensory evoked potentials during carotid endarterectomy. J Neurosurg. 1998;89(4):533-538.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297313]),([FOOTNOTE=Iglesias I, Murkin JM, Bainbridge D, Adams S. Monitoring oxygen saturation significantly decreases postoperative length of stay: a prospective randomised blinded study. Heart Surg Forum. 2003;6:204.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=573311]),([FOOTNOTE=Edmonds HL Jr, Singer I, Sehic A, Strickland TJ. Multimodality neuromonitoring for neurocardiology. J Interv Cardiol. 1998;11(3):197-204.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=805129]),([FOOTNOTE=Yao FSF, Tseng CC, Woo D, Huang SW, Levin SK. Maintaining cerebral oxygen saturation during cardiac surgery decreased neurological complications. Anesthesiology. 2001;95:A152. ],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=573402]),([FOOTNOTE=Roberts KW, Crnkowic AP, Linnerman IJ. Near infrared spectroscopy detects critical cerebral hypoxia during carotid endarterectomy in awake patients. Anesthesiology. 1998;89(3A):A934. ],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=805131]),([FOOTNOTE=Higami T, Kozawa S, Asada T, et al. Retrograde cerebral perfusion versus selective cerebral perfusion as evaluated by cerebral oxygen saturation during aortic arch reconstruction.Ann Thorac Surg. 1999;67(4):1091-1096. ],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=214004]),([FOOTNOTE=Singer I, Dawn B, Edmonds Jr. H, Stickland TJ. Syncope is predicted by neuromonitoring in patients with ICDs. PACE. 1999;22(1):216-222.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297319])

The INVOS™ system utilizes near-infrared light at wavelengths that are absorbed by hemoglobin (730 and 810 nm). Light travels from the sensor’s light emitting diode to either a proximal or distal detector, permitting separate data processing of shallow and deep optical signals. INVOS™ system’s ability to localize the area of measurement, called spatial resolution, has been empirically validated in human subjects.([FOOTNOTE=Hongo K, Kobayashi S, Okudera H, Hokama M, Nakagawa F. Noninvasive cerebral optical spectroscopy. Depth-resolved measurements of cerebral haemodynamics using indocyanine green. Neurol Res. 1995;17(2):89-93.],[ANCHOR=View Abstract],[LINK=/content/covidien/websites/medtronic/com/en/covidien/support/clinical-evidence.html?id=297292]) Data from the scalp and surface tissue are subtracted and suppressed, reflecting rSO2 in deeper tissues. This same concept applies to somatic monitoring.

The result is continuous, real-time adequacy of perfusion data in up to four sites of your choice.