Noninvasive optical monitoring of critical closing pressure and arteriole compliance in human subjects

The critical closing pressure (CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure (ABP) at which cerebral blood flow approaches zero, and their difference (ABP − CrCP) is an accurate estimate of cerebral perfusi...

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Published inJournal of cerebral blood flow and metabolism Vol. 37; no. 8; pp. 2691 - 2705
Main Authors Baker, Wesley B, Parthasarathy, Ashwin B, Gannon, Kimberly P, Kavuri, Venkaiah C, Busch, David R, Abramson, Kenneth, He, Lian, Mesquita, Rickson C, Mullen, Michael T, Detre, John A, Greenberg, Joel H, Licht, Daniel J, Balu, Ramani, Kofke, W Andrew, Yodh, Arjun G
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.08.2017
Subjects
Adult
Blood Flow Velocity - physiology
Blood Pressure - physiology
Cerebrovascular Circulation - physiology
Craniocerebral Trauma - diagnostic imaging
Craniocerebral Trauma - physiopathology
Healthy Volunteers
Humans
Intracranial Pressure - physiology
Microvessels - diagnostic imaging
Microvessels - physiopathology
Models, Biological
Monitoring, Physiologic - instrumentation
Monitoring, Physiologic - methods
Optical Imaging
Rapid Communications
Sensitivity and Specificity
Spectrum Analysis
Ultrasonography, Doppler, Transcranial
near infrared spectroscopy
Arterioles
cerebral blood flow measurement
intrinsic optical imaging
neurocritical care
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Abstract The critical closing pressure (CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure (ABP) at which cerebral blood flow approaches zero, and their difference (ABP − CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.
AbstractList The critical closing pressure ( CrCP ) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure ( ABP ) at which cerebral blood flow approaches zero, and their difference ( ABP  −  CrCP ) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.
The critical closing pressure (CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure (ABP) at which cerebral blood flow approaches zero, and their difference (ABP − CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.
The critical closing pressure ( CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure ( ABP) at which cerebral blood flow approaches zero, and their difference ( ABP -  CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.
The critical closing pressure ( CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure ( ABP) at which cerebral blood flow approaches zero, and their difference ( ABP -  CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.The critical closing pressure ( CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial blood pressure ( ABP) at which cerebral blood flow approaches zero, and their difference ( ABP -  CrCP) is an accurate estimate of cerebral perfusion pressure. Here we demonstrate a novel non-invasive technique for continuous monitoring of CrCP at the bedside. The methodology combines optical diffuse correlation spectroscopy (DCS) measurements of pulsatile cerebral blood flow in arterioles with concurrent ABP data during the cardiac cycle. Together, the two waveforms permit calculation of CrCP via the two-compartment Windkessel model for flow in the cerebral arterioles. Measurements of CrCP by optics (DCS) and transcranial Doppler ultrasound (TCD) were carried out in 18 healthy adults; they demonstrated good agreement (R = 0.66, slope = 1.14 ± 0.23) with means of 11.1 ± 5.0 and 13.0 ± 7.5 mmHg, respectively. Additionally, a potentially useful and rarely measured arteriole compliance parameter was derived from the phase difference between ABP and DCS arteriole blood flow waveforms. The measurements provide evidence that DCS signals originate predominantly from arteriole blood flow and are well suited for long-term continuous monitoring of CrCP and assessment of arteriole compliance in the clinic.
Author Detre, John A
Gannon, Kimberly P
Kofke, W Andrew
Busch, David R
Mullen, Michael T
Abramson, Kenneth
Mesquita, Rickson C
Balu, Ramani
Parthasarathy, Ashwin B
Greenberg, Joel H
Licht, Daniel J
Yodh, Arjun G
He, Lian
Baker, Wesley B
Kavuri, Venkaiah C
AuthorAffiliation 4 Department of Neurology, University of Pennsylvania, Philadelphia, USA
6 Institute of Physics, University of Campinas, Campinas, Brazil
3 Department of Electrical Engineering, University of South Florida, Tampa, USA
2 Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, USA
1 Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, USA
5 Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, USA
AuthorAffiliation_xml – name: 2 Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, USA
– name: 6 Institute of Physics, University of Campinas, Campinas, Brazil
– name: 3 Department of Electrical Engineering, University of South Florida, Tampa, USA
– name: 4 Department of Neurology, University of Pennsylvania, Philadelphia, USA
– name: 1 Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, USA
– name: 5 Division of Neurology, Department of Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, USA
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  surname: Gannon
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  givenname: Venkaiah C
  surname: Kavuri
  fullname: Kavuri, Venkaiah C
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  givenname: David R
  surname: Busch
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  givenname: Arjun G
  surname: Yodh
  fullname: Yodh, Arjun G
BackLink https://www.ncbi.nlm.nih.gov/pubmed/28541158$$D View this record in MEDLINE/PubMed
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Keywords near infrared spectroscopy
Arterioles
cerebral blood flow measurement
intrinsic optical imaging
neurocritical care
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– name: United States
– name: Sage UK: London, England
PublicationTitle Journal of cerebral blood flow and metabolism
PublicationTitleAlternate J Cereb Blood Flow Metab
PublicationYear 2017
Publisher SAGE Publications
Publisher_xml – name: SAGE Publications
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SSID ssj0008355
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Snippet The critical closing pressure (CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial...
The critical closing pressure ( CrCP) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial...
The critical closing pressure ( CrCP ) of the cerebral circulation depends on both tissue intracranial pressure and vasomotor tone. CrCP defines the arterial...
SourceID pubmedcentral
proquest
pubmed
crossref
sage
SourceType Open Access Repository
Aggregation Database
Index Database
Enrichment Source
Publisher
StartPage 2691
SubjectTerms Adult
Blood Flow Velocity - physiology
Blood Pressure - physiology
Cerebrovascular Circulation - physiology
Craniocerebral Trauma - diagnostic imaging
Craniocerebral Trauma - physiopathology
Healthy Volunteers
Humans
Intracranial Pressure - physiology
Microvessels - diagnostic imaging
Microvessels - physiopathology
Models, Biological
Monitoring, Physiologic - instrumentation
Monitoring, Physiologic - methods
Optical Imaging
Rapid Communications
Sensitivity and Specificity
Spectrum Analysis
Ultrasonography, Doppler, Transcranial
Title Noninvasive optical monitoring of critical closing pressure and arteriole compliance in human subjects
URI https://journals.sagepub.com/doi/full/10.1177/0271678X17709166
https://www.ncbi.nlm.nih.gov/pubmed/28541158
https://www.proquest.com/docview/1902482035
https://pubmed.ncbi.nlm.nih.gov/PMC5536813
Volume 37
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