A comparison of the monitors INVOS 3100 and NIRO 500 in detecting changes in cerebral oxygenation

Grubhofer, G.; Tonninger, W; Keznickl, P.; Skyllouriotis, Petrus; Ehrlich, Marek; Hiesmayr, Michael; Lassnigg, Andrea

doi:10.1034/j.1399-6576.1999.430417.x

Cited by 51 publications

(38 citation statements)

References 25 publications

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“…The subjects were asked to hyperventilate to achieve and maintain for 1 min an end-tidal carbon dioxide pressure (PETCO 2 ) of 20 mmHg. Visual feedback was obtained directly from the display of the capnograph (20).…”

Section: Protocolsmentioning

confidence: 99%

Inconsistent detection of changes in cerebral blood volume by near infrared spectroscopy in standard clinical tests

Canova

Roatta

Bosone³

et al. 2011

Journal of Applied Physiology

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The attractive possibility of near infrared spectroscopy (NIRS) to noninvasively assess cerebral blood volume and oxygenation is challenged by the possible interference from extracranial tissues. However, to what extent this may affect cerebral NIRS monitoring during standard clinical tests is ignored. To address this issue, 29 healthy subjects underwent a randomized sequence of three maneuvers that differently affect intra- and extracranial circulation: Valsalva maneuver (VM), hyperventilation (HV), and head-up tilt (HUT). Putative intracranial (“i”) and extracranial (“e”) NIRS signals were collected from the forehead and from the cheek, respectively, and acquired together with cutaneous plethysmography at the forehead (PPG), cerebral blood velocity from the middle cerebral artery, and arterial blood pressure. Extracranial contribution to cerebral NIRS monitoring was investigated by comparing Beer-Lambert (BL) and spatially resolved spectroscopy (SRS) blood volume indicators [the total hemoglobin concentration (tHb) and the total hemoglobin index, (THI)] and by correlating their changes with changes in extracranial circulation. While THIe and tHbe generally provided concordant indications, tHbi and THIi exhibited opposite-sign changes in a high percentage of cases (VM: 46%; HV: 31%; HUT: 40%). Moreover, tHbi was correlated with THIi only during HV ( P < 0.05), not during VM and HUT, while it correlated with PPG in all three maneuvers ( P < 0.01). These results evidence that extracranial circulation may markedly affect BL parameters in a high percentage of cases, even during standard clinical tests. Surface plethysmography at the forehead is suggested as complementary monitoring helpful in the interpretation of cerebral NIRS parameters.

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Section: Protocolsmentioning

confidence: 99%

Inconsistent detection of changes in cerebral blood volume by near infrared spectroscopy in standard clinical tests

Canova

Roatta

Bosone³

et al. 2011

Journal of Applied Physiology

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“…Grubhofer et al (18) compared the INVOS 3100 (Somanetics, Troy, MI) and NIRO 500 (Hamamatsu Photonics) devices during and after hypocapnia. Although the overall correlation between the two devices was significant, changes in cerebral hemoglobin oxygenation state were more accurately measured by the INVOS 3100.…”

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confidence: 99%

Comparing near-infrared spectroscopy devices and their sensors for monitoring regional cerebral oxygen saturation in the neonate

et al. 2013

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Background: Near-infrared spectroscopy (NIRS) is an upcoming clinical method for monitoring regional cerebral oxygen saturation (rScO 2 ) in neonates. There is a growing market offering different devices and sensors. Even though this technique is increasingly clinically applied, little is known about the similarities and/or differences in rScO 2 values between the different devices and sensors. The aim of this study was to compare the rScO 2 values obtained in (preterm) neonates with all available sensors of three frequently used NIRS devices. Methods: Fifty-five neonates admitted to our neonatal intensive care unit (NICU) were included in this study. rScO 2 was simultaneously monitored bilaterally with two different NIRS sensors (left and right frontoparietal) for at least 1 h. Then, the sensors were switched, and measurements were collected for at least another hour. results: We detected a rather close correlation between all investigated sensors from the three different NIRS devices, but absolute rScO 2 values showed substantial differences: BlandAltman analysis showed average differences from 10 to 15%. conclusion: Although the rScO 2 values correlated well between different NIRS sensors, sometimes there were substantial differences between the absolute rScO 2 values, which may complicate clinical application.

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“…Schwartz et al (18) determined the mean value of CO in 18 healthy adults subjects as 68% ± 5%. On the other hand, Grubhofer et al (19) measured the mean CO values in the first three days of newborn premature infants as 54-65.7%, 61.9-82.3% and 67.8-80.1%, respectively. Isobe et al (20) determined CO as 67-74% when SpO 2 was above 95%.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Cerebral Oximeter and Pulse Oximeter Values in the first 72 hours in Premature, Asphyctic and Healthy Newborns

Kaya¹,

Okur²,

Sal³

et al. 2014

West Indian Med J

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A comparison of the monitors INVOS 3100 and NIRO 500 in detecting changes in cerebral oxygenation

Abstract: Changes in cerebral haemoglobin oxygenation state were reflected more accurately by INVOS 3100 than NIRO 500. The cause may be the different technology of the monitors, since INVOS 3100 eliminates the contribution of extracranial oxygenation.

Cited by 51 publications

References 25 publications

Inconsistent detection of changes in cerebral blood volume by near infrared spectroscopy in standard clinical tests

Inconsistent detection of changes in cerebral blood volume by near infrared spectroscopy in standard clinical tests

Comparing near-infrared spectroscopy devices and their sensors for monitoring regional cerebral oxygen saturation in the neonate

Comparison of Cerebral Oximeter and Pulse Oximeter Values in the first 72 hours in Premature, Asphyctic and Healthy Newborns

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