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| Content Provider | IET Digital Library |
|---|---|
| Author | Adjei, Tricia Abásolo, Daniel Santamarta, David |
| Abstract | Hydrocephalus is a condition characterised by enlarged cerebral ventricles, which in turn affects intracranial pressure (ICP); however, the mechanisms regulating ICP are not fully understood. A nonlinear signal processing approach was applied to ICP signals measured during infusion studies from patients with two forms of hydrocephalus, in a bid to compare the differences. This is the first study of its kind. The two forms of hydrocephalus were idiopathic normal pressure hydrocephalus (iNPH) and secondary normal pressure hydrocephalus (SH). Following infusion tests, the Lempel–Ziv (LZ) complexity was calculated from the iNPH and SH ICP signals. The LZ complexity values were averaged for the baseline, infusion, plateau and recovery stages of the tests. It was found that as the ICP increased from basal levels, the LZ complexities decreased, reaching their lowest during the plateau stage. However, the complexities computed from the SH ICP signals decreased to a lesser extent when compared with the iNPH ICP signals. Furthermore, statistically significant differences were found between the plateau and recovery stage complexities when comparing the iNPH and SH results (p = 0.05). This Letter suggests that advanced signal processing of ICP signals with LZ complexity can help characterise different types of hydrocephalus in more detail. |
| Starting Page | 226 |
| Ending Page | 229 |
| Page Count | 4 |
| Volume Number | 3 |
| e-ISSN | 20533713 |
| Issue Number | Issue 3, Sep (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/htl/3/3 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/htl.2016.0018 |
| Journal | Healthcare Technology Letters |
| Publisher Date | 2016-07-05 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Biomedical Engineering Biomedical Measurement And Imaging Biophysics of Neurophysiological Processes Brain Enlarged Cerebral Ventricles Idiopathic Normal Pressure Hydrocephalus Patients Infusion Studies INPH Intracranial Pressure Signal Lempel–Ziv Complexity Medical Disorders Medical Signal Processing Nonlinear Signal Processing Secondary Normal Pressure Hydrocephalus Patients Signal Processing And Detection |
| Content Type | Text |
| Resource Type | Article |
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