scholarly journals Near-Infrared Spectroscopy Can Predict the Onset of Cerebral Hyperperfusion Syndrome after Carotid Endarterectomy

2012 ◽  
Vol 34 (4) ◽  
pp. 314-321 ◽  
Author(s):  
C.W.A. Pennekamp ◽  
R.V. Immink ◽  
H.M. den Ruijter ◽  
L.J. Kappelle ◽  
C.M. Ferrier ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Endarterectomy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cerebral Hyperperfusion Syndrome ◽  
Hyperperfusion Syndrome ◽  
Cerebral Hyperperfusion

scholarly journals Near-infrared spectroscopy to predict cerebral hyperperfusion after carotid endarterectomy

2018 ◽  
Vol 7 (4) ◽  
pp. e0411
Author(s):  
Ivan N. Shchanitsyn ◽  
Igor V. Larin ◽  
Roman M. Bakharev ◽  
Oleg Yu. Lukin
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Endarterectomy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cerebral Hyperperfusion

Near infrared spectroscopy as a guide to surgical intervention during carotid endarterectomy

2004 ◽  
Vol 21 (Supplement 32) ◽  
pp. 43
Author(s):  
I. Zogogiannis ◽  
C. latrou ◽  
C. Alexopoulos ◽  
V. Voukena ◽  
T. Vogiatzaki ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Carotid Endarterectomy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Surgical Intervention

Defining thresholds for critical ischemia by using near-infrared spectroscopy in the adult brain

1998 ◽  
Vol 89 (3) ◽  
pp. 389-394 ◽  
Author(s):  
Peter J. Kirkpatrick ◽  
Joseph Lam ◽  
Pippa Al-Rawi ◽  
Piotr Smielewski ◽  
Marek Czosnyka
Keyword(s):  
Infrared Spectroscopy ◽  
Cerebral Ischemia ◽  
Carotid Artery ◽  
Carotid Endarterectomy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Adult Brain ◽  
Content Type ◽  
Signal Changes ◽  
Fine Print

Object. Signal changes in adult extracranial tissues may have a profound effect on cerebral near-infrared spectroscopy (NIRS) measurements. During carotid surgery NIRS signals provide the opportunity to determine the relative contributions from the intra- and extracranial vascular territories, allowing for a more accurate quantification. In this study the authors applied multimodal monitoring methods to patients undergoing carotid endarterectomy and explored the hypothesis that NIRS can define thresholds for cerebral ischemia, provided extracranial NIRS signal changes are identified and removed. Relative criteria for intraoperative severe cerebral ischemia (SCI) were applied to 103 patients undergoing carotid endarterectomy. Methods. One hundred three patients underwent carotid endarterectomy. An intraoperative fall in transcranial Doppler—detected middle cerebral artery flow velocity (%ΔFV) of greater than 60% accompanied by a sustained fall in cortical electrical activity were adopted as criteria for SCI. Ipsilateral frontal NIRS recorded the total difference in concentrations of oxyhemoglobin and deoxyhemoglobin (Total ΔHbdiff). Interrupted time series analysis following clamping of the external carotid artery (ECA) and the internal carotid artery (ICA) allowed the different vascular components of Total ΔHbdiff (ECA ΔHbdiff and ICA ΔHbdiff) to be identified. Data obtained in 76 patients were deemed suitable. A good correlation between %ΔFV and ICA ΔHbdiff (r = 0.73, p < 0.0001) was evident. Sixteen patients (21%) fulfilled the criteria for SCI. All patients who demonstrated an ICA ΔHbdiff of greater than 6.8 µmol/L showed SCI, and in two patients within this group nondisabling watershed infarction developed, as seen on postoperative computerized tomography scans. No patient with an ICA ΔHbdiff less than 5 µmol/L exhibited SCI or suffered a stroke. Within the resolution of the criteria used an ICA ΔHbdiff threshold of 6.8 µmol/L provided 100% specificity for SCI, whereas an ICA ΔHbdiff less than 5 µmol/L was 100% sensitive for excluding SCI. When Total ΔHbdiff was used without removing the ECA component, no thresholds for SCI were apparent. Conclusions. Carotid endarterectomy provides a stable environment for exploring NIRS-quantified thresholds for SCI in the adult head.

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