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- Title
Anti-decubitus bed mattress may interfere with cerebrovascular pressure reactivity measures due to induced ICP and ABP cyclic peaks.
- Authors
Jeanette, Tas; Melisa, Borg; Peter, Smielewski; Marek, Czosnyka; Erta, Beqiri; Ari, Ercole; Marcel, Aries
- 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.
- Publication
Journal of Clinical Monitoring & Computing, 2021, Vol 35, Issue 2, p423
- ISSN
1387-1307
- Publication type
Letter
- DOI
10.1007/s10877-020-00471-5