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- Publisher Website: 10.1093/bja/66.4.476
- Scopus: eid_2-s2.0-0025869918
- PMID: 2025475
- WOS: WOS:A1991FH24100010
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Article: Systems analysis applied to intracranial pressure waveforms and correlation with clinical status in head injured patients
Title | Systems analysis applied to intracranial pressure waveforms and correlation with clinical status in head injured patients |
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Authors | |
Keywords | Brain: head injury Measurement techniques: spectral analysis Monitoring: intracranial pressure waveform |
Issue Date | 1991 |
Citation | British Journal of Anaesthesia, 1991, v. 66, n. 4, p. 476-482 How to Cite? |
Abstract | Intracranial pressure waveforms (ICPWF) in head injured patients vary with the nature and severity of injury. Clinical interpretation of ICPWF shape is not defined. Spectral analysis provides an objective method of measuring changes in waveform shape, but the indices most suitable for clinical use remain unknown. Spectral analysis has been applied to ICPWF recorded from 30 patients with head injury, classified on clinical grounds into good, poor and intermediate groups. Normalized indices derived from ratios of certain characteristics of the ICP waveform to those of the arterial pressure (AP) waveform, were different (P < 0.05) in all groups. A simple index examined was the harmonic count ratio (Nc:Na) which decreased with increasing severity of injury. ICP/AP harmonic transfer functions were derived, and demonstrated a peaked response in the range 10-12 Hz. Increasing attenuation of this peaked response occurred with increasing severity of injury. These results suggest that transfer functions may be a clinically useful index of intracranial conditions. © 1991 Copyright: 1991 British Journal of Anaesthesia. |
Persistent Identifier | http://hdl.handle.net/10722/324976 |
ISSN | 2023 Impact Factor: 9.1 2023 SCImago Journal Rankings: 2.397 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lin, E. S. | - |
dc.contributor.author | Poon, W. | - |
dc.contributor.author | Hutchinson, R. C. | - |
dc.contributor.author | Oh, T. E. | - |
dc.date.accessioned | 2023-02-27T07:28:41Z | - |
dc.date.available | 2023-02-27T07:28:41Z | - |
dc.date.issued | 1991 | - |
dc.identifier.citation | British Journal of Anaesthesia, 1991, v. 66, n. 4, p. 476-482 | - |
dc.identifier.issn | 0007-0912 | - |
dc.identifier.uri | http://hdl.handle.net/10722/324976 | - |
dc.description.abstract | Intracranial pressure waveforms (ICPWF) in head injured patients vary with the nature and severity of injury. Clinical interpretation of ICPWF shape is not defined. Spectral analysis provides an objective method of measuring changes in waveform shape, but the indices most suitable for clinical use remain unknown. Spectral analysis has been applied to ICPWF recorded from 30 patients with head injury, classified on clinical grounds into good, poor and intermediate groups. Normalized indices derived from ratios of certain characteristics of the ICP waveform to those of the arterial pressure (AP) waveform, were different (P < 0.05) in all groups. A simple index examined was the harmonic count ratio (Nc:Na) which decreased with increasing severity of injury. ICP/AP harmonic transfer functions were derived, and demonstrated a peaked response in the range 10-12 Hz. Increasing attenuation of this peaked response occurred with increasing severity of injury. These results suggest that transfer functions may be a clinically useful index of intracranial conditions. © 1991 Copyright: 1991 British Journal of Anaesthesia. | - |
dc.language | eng | - |
dc.relation.ispartof | British Journal of Anaesthesia | - |
dc.subject | Brain: head injury | - |
dc.subject | Measurement techniques: spectral analysis | - |
dc.subject | Monitoring: intracranial pressure waveform | - |
dc.title | Systems analysis applied to intracranial pressure waveforms and correlation with clinical status in head injured patients | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1093/bja/66.4.476 | - |
dc.identifier.pmid | 2025475 | - |
dc.identifier.scopus | eid_2-s2.0-0025869918 | - |
dc.identifier.volume | 66 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | 476 | - |
dc.identifier.epage | 482 | - |
dc.identifier.isi | WOS:A1991FH24100010 | - |