Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH): Potential for the detection of vasospasm

Alfredo Martinez-Coll; Michael K. Morgan; Hung Nguyen; Stephen N. Hunyor

Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH)

Potential for the detection of vasospasm

Alfredo Martinez-Coll^*, Michael K. Morgan, Hung Nguyen, Stephen N. Hunyor

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

1 Citation (Scopus)

Abstract

Bilateral NIRS measurements of relative blood volume (BV) and oxygen saturation (DESAT) from frontal, temporal and parietal regions were acquired daily (n = 42) in 4 SAH patients (supine and with the head elevated 30 degrees) and compared with subtraction angiography for the detection of vasospasm. Significant differences in NIRS signals were found exclusively in one patient who developed vasospasm. There were significant differences in DESAT (right vs. left temporal region [supine], p = .003); while head elevated data revealed side to side differences for individual wavelengths as well as for BV and DESAT in the temporal and frontal regions, respectively. Differences were also found between periods of spasm and non-spasm for BV in the left parietal (p = .035) and left frontal (p = .023) region. Angiographically confirmed vasospasm was confined to the internal carotid and middle cerebral arteries on the left side. NIRS showed differences only in the affected side, and although not able to identify the location of the spasm, the technique may prove useful in the routine, daily assessment, of these patients.

Original language	English
Title of host publication	Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society
Place of Publication	New York
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	826
Number of pages	1
Volume	2
ISBN (Print)	0780356756, 9780780356757, 0780356748
Publication status	Published - 1999
Externally published	Yes
Event	Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA Duration: 13 Oct 1999 → 16 Oct 1999

Other

Other	Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
City	Atlanta, GA, USA
Period	13/10/99 → 16/10/99

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Martinez-Coll, A., Morgan, M. K., Nguyen, H., & Hunyor, S. N. (1999). Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH): Potential for the detection of vasospasm. In Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society (Vol. 2, pp. 826). New York: Institute of Electrical and Electronics Engineers (IEEE).

Martinez-Coll, Alfredo ; Morgan, Michael K. ; Nguyen, Hung ; Hunyor, Stephen N. / Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH) : Potential for the detection of vasospasm. Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society. Vol. 2 New York : Institute of Electrical and Electronics Engineers (IEEE), 1999. pp. 826

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title = "Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH): Potential for the detection of vasospasm",

abstract = "Bilateral NIRS measurements of relative blood volume (BV) and oxygen saturation (DESAT) from frontal, temporal and parietal regions were acquired daily (n = 42) in 4 SAH patients (supine and with the head elevated 30 degrees) and compared with subtraction angiography for the detection of vasospasm. Significant differences in NIRS signals were found exclusively in one patient who developed vasospasm. There were significant differences in DESAT (right vs. left temporal region [supine], p = .003); while head elevated data revealed side to side differences for individual wavelengths as well as for BV and DESAT in the temporal and frontal regions, respectively. Differences were also found between periods of spasm and non-spasm for BV in the left parietal (p = .035) and left frontal (p = .023) region. Angiographically confirmed vasospasm was confined to the internal carotid and middle cerebral arteries on the left side. NIRS showed differences only in the affected side, and although not able to identify the location of the spasm, the technique may prove useful in the routine, daily assessment, of these patients.",

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Martinez-Coll, A, Morgan, MK, Nguyen, H & Hunyor, SN 1999, Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH): Potential for the detection of vasospasm. in Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society. vol. 2, Institute of Electrical and Electronics Engineers (IEEE), New York, pp. 826, Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS), Atlanta, GA, USA, 13/10/99.

Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH) : Potential for the detection of vasospasm. / Martinez-Coll, Alfredo; Morgan, Michael K.; Nguyen, Hung; Hunyor, Stephen N.

Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society. Vol. 2 New York : Institute of Electrical and Electronics Engineers (IEEE), 1999. p. 826.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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T2 - Potential for the detection of vasospasm

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AU - Morgan, Michael K.

AU - Nguyen, Hung

AU - Hunyor, Stephen N.

PY - 1999

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N2 - Bilateral NIRS measurements of relative blood volume (BV) and oxygen saturation (DESAT) from frontal, temporal and parietal regions were acquired daily (n = 42) in 4 SAH patients (supine and with the head elevated 30 degrees) and compared with subtraction angiography for the detection of vasospasm. Significant differences in NIRS signals were found exclusively in one patient who developed vasospasm. There were significant differences in DESAT (right vs. left temporal region [supine], p = .003); while head elevated data revealed side to side differences for individual wavelengths as well as for BV and DESAT in the temporal and frontal regions, respectively. Differences were also found between periods of spasm and non-spasm for BV in the left parietal (p = .035) and left frontal (p = .023) region. Angiographically confirmed vasospasm was confined to the internal carotid and middle cerebral arteries on the left side. NIRS showed differences only in the affected side, and although not able to identify the location of the spasm, the technique may prove useful in the routine, daily assessment, of these patients.

AB - Bilateral NIRS measurements of relative blood volume (BV) and oxygen saturation (DESAT) from frontal, temporal and parietal regions were acquired daily (n = 42) in 4 SAH patients (supine and with the head elevated 30 degrees) and compared with subtraction angiography for the detection of vasospasm. Significant differences in NIRS signals were found exclusively in one patient who developed vasospasm. There were significant differences in DESAT (right vs. left temporal region [supine], p = .003); while head elevated data revealed side to side differences for individual wavelengths as well as for BV and DESAT in the temporal and frontal regions, respectively. Differences were also found between periods of spasm and non-spasm for BV in the left parietal (p = .035) and left frontal (p = .023) region. Angiographically confirmed vasospasm was confined to the internal carotid and middle cerebral arteries on the left side. NIRS showed differences only in the affected side, and although not able to identify the location of the spasm, the technique may prove useful in the routine, daily assessment, of these patients.

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Martinez-Coll A, Morgan MK, Nguyen H, Hunyor SN. Near infrared spectroscopy (NIRS) measurements following subarachnoid hemorrhage (SAH): Potential for the detection of vasospasm. In Proceedings of the First Joint IEEE Engineering in Medicine and Biology 21st Annual Conference and 2009 Fall Meeting of the Biomedical Engineering Society. Vol. 2. New York: Institute of Electrical and Electronics Engineers (IEEE). 1999. p. 826