Near-Infrared Spectroscopy

Denault, André; Shaaban-Ali, Mohamed; Cournoyer, Alexis; Benkreira, Aymen; Mailhot, Tanya

doi:10.1016/b978-0-12-809915-5.00007-3

Cited by 14 publications

(9 citation statements)

References 179 publications

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“…Denault et al. recently proposed a modified NIRS algorithm in which ultrasound imaging plays a distinct role in hemodynamic evaluation and cerebral imaging in the case of increased intracranial pressure [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

Extended neuromonitoring in aortic arch surgery

et al. 2021

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Background Aortic arch repair for aortic dissection is still associated with a high mortality rate. Providing adequate means of neuromonitoring to guide cerebral hemodynamics is advantageous, especially during selective anterior cerebral perfusion (SACP). Objective We aimed to investigate an easy multimodal neuromonitoring set-up consisting of processed electroencephalography (EEG), near infrared spectroscopy (NIRS), and transcranial doppler sonography (TCD). Material and methods We collected intraoperative data from six patients undergoing surgery for aortic dissection. In addition to standard hemodynamic monitoring, patients underwent continuous bilateral NIRS, processed EEG with bispectral index (BIS), and intermittent transcranial doppler sonography of the medial cerebral artery (MCA) with a standard B‑mode ultrasound device. Doppler measurements were taken bilaterally before cardiopulmonary bypass (CPB), during CPB, and during SACP at regular intervals. Results Of the patients four survived without neurological deficits while two suffered fatal outcomes. Of the survivors two suffered from transient postoperative delirium. Multimodal monitoring led to a change in CPB flow or cannula repositioning in three patients. Left-sided mean flow velocities of the MCA decreased during SACP, as did BIS values. Conclusion Monitoring consisting of BIS, NIRS, and TCD may have an impact on hemodynamic management in aortic arch operations.

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Section: Discussionmentioning

confidence: 99%

Extended neuromonitoring in aortic arch surgery

et al. 2021

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“…Along with the research progress in NIRS-based rSO 2 monitoring, many new types of monitoring equipment emerged, most of which are based on the above-mentioned principles. Although each has its own special technical features, NIRS-based rSO 2 monitoring equipment mainly utilizes three types of method: continuous wave spectroscopy (CWS), time-resolved spectroscopy (TRS), and frequency domain photon migration (FDPM) [ 10 , 55 ]. CWS is the most simple and reliable in terms of system function realization.…”

Section: Cerebral Blood Oxygen Saturation Monitoring Methodsmentioning

confidence: 99%

“… Diagram of the NIRS sensor monitoring light path [ 10 ]. ( a ) Single light source; ( b ) dual light source.…”

Section: Figurementioning

confidence: 99%

“…Recent studies have reported that these new monitoring methods tend to be more effective and reliable than conventional ones and are more suitable for cerebral blood oxygen saturation monitoring and relevant research. Based on different principles and techniques, these new methods have their own advantages and defects in the following aspects: temporal resolution, spatial resolution, cost, detection scope, noise artifacts, and applicable environment [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

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A Review of Monitoring Methods for Cerebral Blood Oxygen Saturation

Zhong

Sun

2021

Healthcare

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In recent years, cerebral blood oxygen saturation has become a key indicator during the perioperative period. Cerebral blood oxygen saturation monitoring is conducive to the early diagnosis and treatment of cerebral ischemia and hypoxia. The present study discusses the three most extensively used clinical methods for cerebral blood oxygen saturation monitoring from different aspects: working principles, relevant parameters, current situations of research, commonly used equipment, and relative advantages of different methods. Furthermore, through comprehensive comparisons of the methods, we find that near-infrared spectroscopy (NIRS) technology has significant potentials and broad applications prospects in terms of cerebral oxygen saturation monitoring. Despite the current NIRS technology, the only bedside non-invasive cerebral oxygen saturation monitoring technology, still has many defects, it is more in line with the future development trend in the field of medical and health, and will become the main method gradually.

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“…It can be applied to multiple tissues. NIRS, based on the Beer-Lambert principle enables the measurement of oxygenated hemoglobin concentration in relation to total hemoglobin concentration [31]. NIRS is a promising method for the assessment of microvascular changes related to hemodialysis.…”

Section: Near-infrared Spectroscopymentioning

confidence: 99%

Assessment of microcirculatory function during hemodialysis

Penny

Moradshahi

McIntyre

2022

Current Opinion in Nephrology &Amp; Hypertension

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Purpose of reviewPatients with chronic kidney disease characteristically exhibit microcirculatory dysfunction, in combination with vascular damage. Hemodialysis superimposes additional circulatory stress to the microvasculature (repetitive ischemic insults/cumulative damage) resulting in high mortality. Intradialytic monitoring and hemodialysis delivery is currently limited to macrovascular/systemic assessment and detection of intradialytic systemic hypotension. Monitoring of the microcirculation has the potential to provide valuable information on hemodialysis-induced circulatory stress likely to result in end-organ ischemia (with/without systemic hypotension) generating an opportunity to intervene before tissue injury occurs. Recent findingsVarious noninvasive technologies have been used assessing the microcirculation in hemodialysis patients at rest. Some technologies have also been applied during hemodialysis studying the effects of treatment on the microcirculation. Despite the approach used, results are consistent. Hemodialysis patients have impaired microcirculations with treatment adding additional stress to inadequately regulated vascular beds. Utility/practicality/clinical relevance vary significantly between methodologies.

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Near-Infrared Spectroscopy

Cited by 14 publications

References 179 publications

Extended neuromonitoring in aortic arch surgery

Extended neuromonitoring in aortic arch surgery

A Review of Monitoring Methods for Cerebral Blood Oxygen Saturation

Assessment of microcirculatory function during hemodialysis

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