Cerebral autoregulation in the preterm newborn using near-infrared spectroscopy: a comparison of time-domain and frequency-domain analyses

Eriksen, Vibeke R.; Hahn, Gitte Holst; Greisen, Gorm

doi:10.1117/1.jbo.20.3.037009

Cited by 27 publications

(22 citation statements)

References 32 publications

(34 reference statements)

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“…More recent studies have focussed on the use of NIRS to assess cerebral autoregulation in neonates, see for example Caicedo et al (2011a), Eriksen et al (2015). It has been shown that there are few differences between different NIRS metrics, indicating that a range of such metrics can be used to assess autoregulation, Caicedo et al (2011b), although interpretation of any of these metrics needs to be done with care.…”

Section: Neonatesmentioning

confidence: 99%

Cerebral Autoregulation

Payne

2016

SpringerBriefs in Bioengineering

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SpringerBriefs present concise summaries of cutting-edge research and practical applications across a wide spectrum of fields. Featuring compact volumes of 50 to 125 pages, the series covers a range of content from professional to academic. Typical topics might include: A timely report of state-of-the art analytical techniques, a bridge between new research results, as published in journal articles, and a contextual literature review, a snapshot of a hot or emerging topic, an in-depth case study, a presentation of core concepts that students must understand in order to make independent contributions.More information about this series at

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Section: Neonatesmentioning

confidence: 99%

Cerebral Autoregulation

Payne

2016

SpringerBriefs in Bioengineering

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“…In the frequency-domain analysis, they used the variables coherence and gain, and for the time-domain analysis, they used COx in 60 very preterm infants (GA 26.6 ± 1.3 weeks). They found that the concordance between the two methods was poor: the two methods did not classify the same infants as having intact or impaired cerebrovascular autoregulation [76].…”

Section: Time-domain Versus Frequency-domain Analysismentioning

confidence: 99%

Measuring cerebrovascular autoregulation in preterm infants using near-infrared spectroscopy: an overview of the literature

Kooi¹,

Verhagen

Elting

et al. 2017

Expert Review of Neurotherapeutics

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(2017) Measuring cerebrovascular autoregulation in preterm infants using near-infrared spectroscopy: an overview of the literature, Expert Review of Neurotherapeutics, 17:8, 801-818, DOI: 10.1080/14737175.2017 Introduction:The preterm born infant's ability to regulate its cerebral blood flow (CBF) is crucial in preventing secondary ischemic and hemorrhagic damage in the developing brain. The relationship between arterial blood pressure (ABP) and CBF estimates, such as regional cerebral oxygenation as measured by near-infrared spectroscopy (NIRS), is an attractive option for continuous non-invasive assessment of cerebrovascular autoregulation. Areas covered: The authors performed a literature search to provide an overview of the current literature on various current clinical practices and methods to measure cerebrovascular autoregulation in the preterm infant by NIRS. The authors focused on various aspects: Characteristics of patient cohorts, surrogate measures for cerebral perfusion pressure, NIRS devices and their accompanying parameters, definitions for impaired cerebrovascular autoregulation, methods of measurements and clinical implications. Expert commentary: Autoregulation research in preterm infants has reported many methods for measuring autoregulation using different mathematical models, signal processing and data requirements. At present, it remains unclear which NIRS signals and algorithms should be used that result in the most accurate and clinically relevant assessment of cerebrovascular autoregulation. Future studies should focus on optimizing strategies for cerebrovascular autoregulation assessment in preterm infants in order to develop autoregulation-based cerebral perfusion treatment strategies. ARTICLE HISTORY

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“…Fundamental limitations of CW fNIRS are difficult to overcome without high density optode arrangements and innovative signal processing. FD fNIRS requires slightly more complex instrumentation with a frequency modulated source and phase-locked detector, but it is able to quantify absolute concentration of chromophores and can image deeper than CW [18,19]. TD fNIRS requires the most complex instrumentation due to the need for picosecond time gating on each detector, but it also has the most promise for high resolution imaging of chromophore concentration [20,21].…”

Section: Introductionmentioning

confidence: 99%

NIR light propagation in a digital head model for traumatic brain injury (TBI)

Francis

Khan²,

Alexandrakis

et al. 2015

Biomed. Opt. Express

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Near infrared spectroscopy (NIRS) is capable of detecting and monitoring acute changes in cerebral blood volume and oxygenation associated with traumatic brain injury (TBI). Wavelength selection, sourcedetector separation, optode density, and detector sensitivity are key design parameters that determine the imaging depth, chromophore separability, and, ultimately, clinical usefulness of a NIRS instrument. We present simulation results of NIR light propagation in a digital head model as it relates to the ability to detect intracranial hematomas and monitor the perihematomal tissue viability. These results inform NIRS instrument design specific to TBI diagnosis and monitoring.

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Cerebral autoregulation in the preterm newborn using near-infrared spectroscopy: a comparison of time-domain and frequency-domain analyses

Cited by 27 publications

References 32 publications

Cerebral Autoregulation

Cerebral Autoregulation

Measuring cerebrovascular autoregulation in preterm infants using near-infrared spectroscopy: an overview of the literature

NIR light propagation in a digital head model for traumatic brain injury (TBI)

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