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James I. Ausman - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Cerebral oximetry during endovascular treatment of carotid-cavernous fistula
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, Fady T Charbel, James I. AusmanAbstract:Endovascular treatment of carotid cavernous fistula is done routinely in our institution. We have been monitoring these patients with transcranial Cerebral oximetry. The transcranial Cerebral Oximeter is a reliable, low-cost, non-invasive device that provides real-time evaluation of regional brain oxygen saturation during and after endovascular treatment of cerebrovascular diseases. We used the INVOS 3100A (Somanetics, Troy, MI) in our study. We discuss seven patients with carotid-cavernous fistulas treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation depicted was directly related to the side of the venous drainage of the fistula, with the brain oxygen saturation 15 - 20% higher on the side of the venous drainage. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on both sides. In our patients treated for carotid-cavernous fistula, we evaluated the sensitivity and usefulness of Cerebral oximetry as an important non-invasive monitoring tool for the endovascular treatment of carotid-cavernous fistula.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: M. Serdar Alp, Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Changes in Cerebral oxygen saturation with change in posture: a preliminary report.
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association, 1997Co-Authors: Mukesh Misra, James I. Ausman, Manuel Dujovny, M. Serdar Alp, Konstantin V. Slavin, Ronald WidmanAbstract:Background . Disease of the major vessels in the neck can disrupt autoregulation and lead to changes in the Cerebral blood flow and Cerebral autoregulation. These changes can be reflected by means of Cerebral oxygen saturation. Methods . We measured Cerebral oxygen saturation in 20 patients with atherosclerotic disease of the carotid and vertebral arteries and compared results with 10 normal subjects. Saturation was measured using a noninvasive near-infrared device, the transcranial Cerebral Oximeter. Results . There were marked decreases in Cerebral oxygen saturation in patients with carotid-vertebral artery disease when the position of the patient was changed, from supine to erect. Conclusion . Changes in regional Cerebral oxygen saturation inpatients with carotid-vertebral artery disease may reflect disruption of Cerebral autoregulation.
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Transcranial Cerebral oximetry in endovascular treatment of carotid-cavernous fistula.
Neuroradiology, 1996Co-Authors: Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The transcranial Cerebral Oximeter is a reliable, low-cost, noninvasive device that provides real-time evaluation of regional brain oxygen saturation during endovascular treatment of cerebrovascular diseases. We discuss three patients with carotid-cavernous fistulae treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation measured was directly related to the side of the venous drainage of the fistula, being 15-20% higher on that side. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on the two sides.
Mukesh Misra - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Cerebral oximetry during endovascular treatment of carotid-cavernous fistula
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, Fady T Charbel, James I. AusmanAbstract:Endovascular treatment of carotid cavernous fistula is done routinely in our institution. We have been monitoring these patients with transcranial Cerebral oximetry. The transcranial Cerebral Oximeter is a reliable, low-cost, non-invasive device that provides real-time evaluation of regional brain oxygen saturation during and after endovascular treatment of cerebrovascular diseases. We used the INVOS 3100A (Somanetics, Troy, MI) in our study. We discuss seven patients with carotid-cavernous fistulas treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation depicted was directly related to the side of the venous drainage of the fistula, with the brain oxygen saturation 15 - 20% higher on the side of the venous drainage. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on both sides. In our patients treated for carotid-cavernous fistula, we evaluated the sensitivity and usefulness of Cerebral oximetry as an important non-invasive monitoring tool for the endovascular treatment of carotid-cavernous fistula.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: M. Serdar Alp, Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Changes in Cerebral oxygen saturation with change in posture: a preliminary report.
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association, 1997Co-Authors: Mukesh Misra, James I. Ausman, Manuel Dujovny, M. Serdar Alp, Konstantin V. Slavin, Ronald WidmanAbstract:Background . Disease of the major vessels in the neck can disrupt autoregulation and lead to changes in the Cerebral blood flow and Cerebral autoregulation. These changes can be reflected by means of Cerebral oxygen saturation. Methods . We measured Cerebral oxygen saturation in 20 patients with atherosclerotic disease of the carotid and vertebral arteries and compared results with 10 normal subjects. Saturation was measured using a noninvasive near-infrared device, the transcranial Cerebral Oximeter. Results . There were marked decreases in Cerebral oxygen saturation in patients with carotid-vertebral artery disease when the position of the patient was changed, from supine to erect. Conclusion . Changes in regional Cerebral oxygen saturation inpatients with carotid-vertebral artery disease may reflect disruption of Cerebral autoregulation.
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Transcranial Cerebral oximetry in endovascular treatment of carotid-cavernous fistula.
Neuroradiology, 1996Co-Authors: Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The transcranial Cerebral Oximeter is a reliable, low-cost, noninvasive device that provides real-time evaluation of regional brain oxygen saturation during endovascular treatment of cerebrovascular diseases. We discuss three patients with carotid-cavernous fistulae treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation measured was directly related to the side of the venous drainage of the fistula, being 15-20% higher on that side. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on the two sides.
M Dinkel - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Near-Infrared Spectroscopy and Somatosensory Evoked Potentials for the Detection of Cerebral Ischemia During Carotid Endarterectomy
Stroke, 1998Co-Authors: U Beese, H Langer, W Lang, M DinkelAbstract:Background and Purpose—We sought to assess the clinical value of regional Cerebral saturation (rSo2) obtained by means of the Cerebral Oximeter INVOS 3100A (Somanetics) in comparison to monitoring of somatosensory evoked potentials (SEP) for the reliable detection of severe Cerebral ischemia requiring shunt placement in the individual patient undergoing carotid surgery under general anesthesia. Methods—In 317 patients undergoing reconstructive surgery on the internal carotid artery, simultaneous recordings of SEP and rSo2 were obtained throughout the operation. Results—All 287 patients with preserved cortical SEP remained neurologically intact. Shunt placement was performed in 27 patients (9%) after flattening of cortical SEP during cross-clamping of the internal carotid artery. A stable rSo2 value just before cross-clamping and the lowest value after cross-clamping were registered, and the decrease was calculated. A statistically significant (P
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Comparison of near-infrared spectroscopy and somatosensory evoked potentials for the detection of Cerebral ischemia during carotid endarterectomy.
Stroke, 1998Co-Authors: U Beese, H Langer, W Lang, M DinkelAbstract:We sought to assess the clinical value of regional Cerebral saturation (rSO2) obtained by means of the Cerebral Oximeter INVOS 3100A (Somanetics) in comparison to monitoring of somatosensory evoked potentials (SEP) for the reliable detection of severe Cerebral ischemia requiring shunt placement in the individual patient undergoing carotid surgery under general anesthesia. In 317 patients undergoing reconstructive surgery on the internal carotid artery, simultaneous recordings of SEP and rSO2 were obtained throughout the operation. All 287 patients with preserved cortical SEP remained neurologically intact. Shunt placement was performed in 27 patients (9%) after flattening of cortical SEP during cross-clamping of the internal carotid artery. A stable rSO2 value just before cross-clamping and the lowest value after cross-clamping were registered, and the decrease was calculated. A statistically significant (P<0.01) decrease of rSO2 after cross-clamping could be found in patients without (64.9+/-8.3% to 60.9+/-9.9%) as well as in patients with consecutive loss of cortical SEP (65.8+/-9.1% to 56.1+/-13.4%). The difference of the decrease of rSO2 in both groups was highly significant (6.9+/-9.0% versus 15.6+/-14.0%; P<0.001). However, substantial interindividual variability of rSO2 and derived change of rSO2 did not allow the definition of a threshold value indicating need of shunt placement. The reliability of SEP for the detection of clamp-related hypoperfusion has been reaffirmed. As long as rSO2 threshold values indicating critical Cerebral ischemia are not defined, therapeutic interventions based on monitoring with the Cerebral Oximeter INVOS 3100A are not justified.
Manuel Dujovny - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of Cerebral oximetry during endovascular treatment of carotid-cavernous fistula
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, Fady T Charbel, James I. AusmanAbstract:Endovascular treatment of carotid cavernous fistula is done routinely in our institution. We have been monitoring these patients with transcranial Cerebral oximetry. The transcranial Cerebral Oximeter is a reliable, low-cost, non-invasive device that provides real-time evaluation of regional brain oxygen saturation during and after endovascular treatment of cerebrovascular diseases. We used the INVOS 3100A (Somanetics, Troy, MI) in our study. We discuss seven patients with carotid-cavernous fistulas treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation depicted was directly related to the side of the venous drainage of the fistula, with the brain oxygen saturation 15 - 20% higher on the side of the venous drainage. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on both sides. In our patients treated for carotid-cavernous fistula, we evaluated the sensitivity and usefulness of Cerebral oximetry as an important non-invasive monitoring tool for the endovascular treatment of carotid-cavernous fistula.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: M. Serdar Alp, Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Application of transcranial Cerebral oxygen monitoring during the balloon occlusion test
Optical Tomography and Spectroscopy of Tissue: Theory Instrumentation Model and Human Studies II, 1997Co-Authors: Manuel Dujovny, Mukesh Misra, Gerard Debrun, Victor A Aletich, James I. AusmanAbstract:The purpose of this paper is to evaluate the value of transcranial Cerebral Oximeter in combination with other monitoring techniques during the balloon occlusion test. In this study 22 patients underwent balloon occlusion testing and were monitored by neurological examination, electroencephalography, transcranial Doppler, and transcranial Cerebral oximetry. Eighteen patients had an intracranial aneurysm and four patients had skull base meningiomas. Seventeen patients passed the test without any symptoms. One patient underwent extracranial-intracranial by-pass surgery after failing the first test and passed the second test after the treatment. Transcranial Cerebral Oximeter showed 10% or less decrease in rSO2 in patients who passed the test and 10% or higher decrease in rSO2 for more than one minute in patients who failed. Electroencephalography and Cerebral oximetry are found to be the most dependable monitoring methods for predicting neurological deficits after balloon inflation. Transcranial Cerebral Oximeter has provided non- invasive monitoring with real-time quantitative information and it was very useful during the balloon occlusion test.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Changes in Cerebral oxygen saturation with change in posture: a preliminary report.
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association, 1997Co-Authors: Mukesh Misra, James I. Ausman, Manuel Dujovny, M. Serdar Alp, Konstantin V. Slavin, Ronald WidmanAbstract:Background . Disease of the major vessels in the neck can disrupt autoregulation and lead to changes in the Cerebral blood flow and Cerebral autoregulation. These changes can be reflected by means of Cerebral oxygen saturation. Methods . We measured Cerebral oxygen saturation in 20 patients with atherosclerotic disease of the carotid and vertebral arteries and compared results with 10 normal subjects. Saturation was measured using a noninvasive near-infrared device, the transcranial Cerebral Oximeter. Results . There were marked decreases in Cerebral oxygen saturation in patients with carotid-vertebral artery disease when the position of the patient was changed, from supine to erect. Conclusion . Changes in regional Cerebral oxygen saturation inpatients with carotid-vertebral artery disease may reflect disruption of Cerebral autoregulation.
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Transcranial Cerebral oximetry in endovascular treatment of carotid-cavernous fistula.
Neuroradiology, 1996Co-Authors: Mukesh Misra, Gerard Debrun, Victor A Aletich, Manuel Dujovny, James I. AusmanAbstract:The transcranial Cerebral Oximeter is a reliable, low-cost, noninvasive device that provides real-time evaluation of regional brain oxygen saturation during endovascular treatment of cerebrovascular diseases. We discuss three patients with carotid-cavernous fistulae treated by endovascular balloon occlusion, each monitored continuously before, during, and after the procedure with transcranial Cerebral oximetry. The Cerebral oxygen saturation measured was directly related to the side of the venous drainage of the fistula, being 15-20% higher on that side. Following endovascular occlusion of the fistula, oxygen saturation gradually became equal on the two sides.
Christopher F. Kearns - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Cerebral Oximeter and evoked potential monitoring in carotid endarterectomy
Canadian Journal of Anaesthesia, 1997Co-Authors: Catherine M. Duffy, Pirjo H. Manninen, Andrew Chan, Christopher F. KearnsAbstract:Objectif Évaluer l’oxymètre cérébral, un appareil non invasif de mesure de la saturation régionale en oxygène (rSO_2) en continu, comme moniteur cérébral de l’endartérectomie carotidienne (EAC). L’étude compare la capacité de la rSO_2 de prédire le besoin de shunter et les déficits neurologiques postopératoires avec celle des potentiels évoqués somatosensoriels (PESS). Méthodes Soixante-douze patients consentants programmés pour une EAC sous anesthésie générale participaient à l’étude. L’expérience s’est déroulée dans des conditions de normocarbie, de normothermie et de normotension. Les PESS bilatéraux du nerf médian et l’oxymètre cérébral INVOS 3100 dont le capteur était placé à la région frontale homolatérale faisaient fonction de moniteurs cérébraux. Une baisse de l’amplitude de 50% des PESS et de 10% de la rSO_2 était considérée d’importance clinique. Un examen neurologique était effectué au réveil, 24 h après l’intervention ainsi qu’au moment du congé. Les changements de la rSO_2 ont été mis en parallèle avec les changements des PESS et les déficits neurologiques. La comparaison statistique a utilisé la méthode du chi carré et l’analyse de variance, P < 0,05 étant considéré comme significatif. Résultats Pendant le clampage de la carotide, la rSO_2 diminuait de 72 ±8% à 68 ±9% et la pression artérielle moyenne augmentait de 92 ±14 mmHg à 98 ±14 mmHg. Quatre patients ont présenté une baisse de ≥10% de la sRO_2 après l’application du clamp. Des changements de PESS et de rSO_2 concomitants sont survenus chez deux patients. Trois des quatre patients shuntés ont présenté des déficits neurologiques transitoires. Un patient a manifesté un déficit transitoire demeuré invisible sur les moniteurs. Aucun patient n’a souffert de déficit postopératoire permanent. Comparativement aux PESS, la rSO2 avait une sensibilité de 50% et une spécificité de 96%. Conclusion Lexpérimentation clinique de cette nouvelle technologie suit son cours. Son rôle reste à déterminer pour les interventions neurovasculaires. Purpose To assess the Cerebral Oximeter, which measures regional oxygen saturation (rSO_2) continuously and noninvasively, as a Cerebral monitor during carotid endarterectomy (CEA). The rSO_2 was compared with Somatosensory Evoked Potentials (SSEPs) as an indicator for shunting and as a predictor of postoperative neurological deficits. Methods Seventy-two consenting patients undergoing CEA with general anaesthesia were studied. Normocarbia, normothermia and normotension were maintained. Cerebral monitoring consisted of bilateral median nerve SSEPs and the INVOS 3100 Cerebral Oximeter with the sensor pad placed on the ipsilateral forehead. Decreases in SSEP amplitude of 50% and in rSO_2 of 10% were considered clinically significant. Neurological assessment was performed at emergence from anaesthesia, 24 hr postoperatively and at discharge. The rSO_2 changes were compared with SSEP changes and with neurological deficits. Statistical analysis was with chi square and analysis of variance. P < 0.05 was considered significant. Results During carotid artery clamping, rSO_2 decreased from 72 ±8% to 68 ±9% and mean arterial blood pressure increased from 92 ±14 mmHg to 98 ±14 mmHg. In four patients, the carotid artery was shunted because of SSEP changes after cross-clamping. Five patients had ≥10% decreases in rSO_2 following clamp application. Changes in both SSEP and rSO_2 occurred in two patients. Three of the four shunted patients had transient postoperative neurological deficits. One patient had a transient deficit without changes in either monitor. There were no persistent postoperative deficits. Compared with SSEPs, rSO_2 had a sensitivity of 50% and a specificity of 96%. Conclusion Clinical experience with this evolving technology is ongoing. Its role in neurovascular procedures has yet to be established.
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Comparison of Cerebral Oximeter and evoked potential monitoring in carotid endarterectomy
Canadian journal of anaesthesia = Journal canadien d'anesthesie, 1997Co-Authors: Catherine M. Duffy, Pirjo H. Manninen, Andrew T. Chan, Christopher F. KearnsAbstract:Purpose To assess the Cerebral Oximeter, which measures regional oxygen saturation (rSO2) continuously and noninvasively, as a Cerebral monitor during carotid endarterectomy (CEA). The rSO2 was compared with Somatosensory Evoked Potentials (SSEPs) as an indicator for shunting and as a predictor of postoperative neurological deficits.