Anti-decubitus bed mattress may interfere with cerebrovascular pressure reactivity measures due to induced ICP and ABP cyclic peaks.
Journal of clinical monitoring and computing
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Jeanette, T., Melisa, B., Peter, S., Marek, C., Erta, B., Ari, E., & Marcel, A. (2021). Anti-decubitus bed mattress may interfere with cerebrovascular pressure reactivity measures due to induced ICP and ABP cyclic peaks.. Journal of clinical monitoring and computing, 35 (2), 423-425. https://doi.org/10.1007/s10877-020-00471-5
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 cerebral autoregulation (CA) status. We present an unexpected influence of cyclic anti-decubitus matrass inflations and deflations on invasive ICP, ABP and PRx calculations in our TBI patients. This probably affects autoregulation guided management negatively. 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.
External DOI: https://doi.org/10.1007/s10877-020-00471-5
This record's URL: https://www.repository.cam.ac.uk/handle/1810/301404
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