Lumbar puncture position influences intracranial pressure.
Hip flexion
Intracranial pressure (ICP)
Lumbar puncture opening pressure (CSFop)
Lumbar puncture position
Neck flexion
Journal
Acta neurochirurgica
ISSN: 0942-0940
Titre abrégé: Acta Neurochir (Wien)
Pays: Austria
ID NLM: 0151000
Informations de publication
Date de publication:
07 2021
07 2021
Historique:
received:
12
10
2020
accepted:
16
03
2021
pubmed:
3
4
2021
medline:
21
10
2021
entrez:
2
4
2021
Statut:
ppublish
Résumé
The standard lumbar puncture position involves maximum flexion of both lumbar and cervical spine. The cerebrospinal fluid opening pressure (CSF Thirty-nine patients, undergoing invasive ICP monitoring as part of diagnostic work-up, were included. The patients underwent either a vertical postural examination (n = 24) or a horizontal postural examination (n = 15) to examine a varying degree of spine flexion. The vertical examination showed that ICP decreased by 15.2 mmHg when straightening the neck in a sitting lumbar puncture position (n = 24, IQR - 20.1 to - 9.7). In the horizontal examination, ICP increased in all but one patient when changing from supine position to lateral recumbent position (n = 15, median increase of 6.9 mmHg, IQR 3.1 to 9.9). Straightening the hips alone decreased ICP with 0.2 mmHg (n = 15, IQR - 0.5 to 2.0), while straightening the neck alone decreased ICP by 4.0 mmHg (n = 15, IQR - 5.9 to - 1.7). However, when straightening the hip and neck simultaneously ICP decreased by 6.4 mmHg (n = 6, IQR - 9.5 to - 4.4). Neck flexion alone, and neck flexion and hip flexion in combination, has significant confounding influence on ICP. This may cause patients to shift from a normal ICP range to a pathological ICP range, which will potentially affect treatment decisions. Consensus on guidelines for body position including neck and hip flexion measuring CSF
Sections du résumé
BACKGROUND
The standard lumbar puncture position involves maximum flexion of both lumbar and cervical spine. The cerebrospinal fluid opening pressure (CSF
METHODS
Thirty-nine patients, undergoing invasive ICP monitoring as part of diagnostic work-up, were included. The patients underwent either a vertical postural examination (n = 24) or a horizontal postural examination (n = 15) to examine a varying degree of spine flexion.
RESULTS
The vertical examination showed that ICP decreased by 15.2 mmHg when straightening the neck in a sitting lumbar puncture position (n = 24, IQR - 20.1 to - 9.7). In the horizontal examination, ICP increased in all but one patient when changing from supine position to lateral recumbent position (n = 15, median increase of 6.9 mmHg, IQR 3.1 to 9.9). Straightening the hips alone decreased ICP with 0.2 mmHg (n = 15, IQR - 0.5 to 2.0), while straightening the neck alone decreased ICP by 4.0 mmHg (n = 15, IQR - 5.9 to - 1.7). However, when straightening the hip and neck simultaneously ICP decreased by 6.4 mmHg (n = 6, IQR - 9.5 to - 4.4).
CONCLUSIONS
Neck flexion alone, and neck flexion and hip flexion in combination, has significant confounding influence on ICP. This may cause patients to shift from a normal ICP range to a pathological ICP range, which will potentially affect treatment decisions. Consensus on guidelines for body position including neck and hip flexion measuring CSF
Identifiants
pubmed: 33797628
doi: 10.1007/s00701-021-04813-3
pii: 10.1007/s00701-021-04813-3
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1997-2004Références
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