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Association between ICP pulse waveform morphology and ICP B waves
Magdalena Kasprowicz1, Marvin Bergsneider, Marek Czosnyka
1Department of Neurosurgery, University of California, Los Angeles, CA 90095, USA.
Acta Neurochirurgica. Supplement
|February 14, 2012
Summary
Changes in intracranial pressure (ICP) pulse shape can differentiate ICP slow wave patterns in hydrocephalus patients. This analysis aids in understanding ICP overnight monitoring data.
Area of Science:
- Neurosurgery
- Biomedical Engineering
- Neurology
Background:
- Intracranial pressure (ICP) monitoring is crucial for managing hydrocephalus.
- ICP slow waves (0.5-2.0 cycles/min) are significant physiological indicators.
- Understanding ICP pulse morphology variations is key to interpreting ICP dynamics.
Purpose of the Study:
- To investigate how intracranial pressure (ICP) pulse shape changes with different ICP slow wave patterns.
- To analyze ICP morphology during overnight monitoring in hydrocephalus patients.
Main Methods:
- Characterized four ICP slow wave patterns (NW, SW, AS, PW) in 44 overnight ICP recordings.
- Utilized the Morphological Clustering and Analysis of ICP Pulse (MOCAIP) algorithm to assess ICP pulse morphology.
- Employed stepwise discriminant analysis to identify distinguishing morphological features.
Main Results:
- Distinguished between NW + SW and AS + PW groups based on P(2) and P(3) amplitude variability (p < 0.000001).
- Differentiated AS from PW patterns using mean curvature of P(2) and P(3) (p < 0.000001).
- No MOCAIP features could separate NW from SW patterns.
Conclusions:
- ICP pulse morphology analysis, particularly P(2) and P(3) characteristics, can help differentiate specific ICP slow wave patterns.
- This approach offers valuable insights for interpreting overnight ICP recordings in hydrocephalus.
- Further research may refine MOCAIP for more granular ICP waveform analysis.
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