Abstract
Severe traumatic brain injury (TBI) patients are monitored with continuous arterial blood pressure (ABP) and intracranial pressure (ICP). The pressure reactivity index (PRx) is a frequently used correlation coefficient between ABP and ICP to inform clinicians at the bedside about trends in global cerebrovascular pressure regulation status. We present an unexpected influence of cyclic anti-decubitus mattress inflations and deflations on invasive ICP, ABP and PRx calculations in our TBI patients. This might affect autoregulation guided management. In our database, 23% (9/39) of the patients show recurrent peaks in the monitoring signals. We hypothesize that these peaks are caused by (a combination) of hydrostatic change, local (cervical) compression and/or incorrect sensor zeroing due to positional changes induced by the anti-decubitus mattress. This warrants further investigation by the manufacturer and exploration of data filters.
Original language | English |
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Pages (from-to) | 423-425 |
Number of pages | 3 |
Journal | Journal of Clinical Monitoring and Computing |
Volume | 35 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Apr 2021 |
Keywords
- anti-decubitus bed mattress
- icp
- prx
- traumatic brain-injury
- TRAUMATIC BRAIN-INJURY
- ICP
- Prx
- Anti-decubitus bed mattress