Τετάρτη 11 Απριλίου 2018

Assessment of nociception and pain in participants with unresponsive or minimally conscious state after acquired brain injury: the relationship between the Coma Recovery Scale-Revised and the Nociception Coma Scale-Revised.

Publication date: Available online 10 April 2018
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Camille Chatelle, Solveig L. Hauger, Charlotte Martial, Frank Becker, Bernd Eifert, Dana Boering, Joseph T. Giacino, Steven Laureys, Marianne Løvstad, Petra Maurer-Karattup
ObjectiveInvestigate the relationship between consciousness and nociceptive responsiveness (i.e., Nociception Coma Scale-Revised [NCS-R]), examine the suitability of the NCS-R for assessing nociception in participants with disorders of consciousness (DoC) and replicate previous findings on psychometric properties of the scale.DesignWe prospectively assessed consciousness with the Coma Recovery Scale-Revised (CRS-R). Responses during baseline, non-noxious and noxious stimulations were scored with the NCS-R, CRS-R oromotor and motor subscales.SettingSpecialized DoC program and university hospitals.ParticipantsEighty-five participants diagnosed with DoCs.Main Outcome MeasuresCorrelation between CRS-R total scores and CRS-R and NCS-R (sub)scores to noxious stimulation, proportion of grimace and/or cry in participants with minimally consciousness (MCS) and unresponsive wakefulness syndrome (UWS) during non-noxious and noxious conditions.InterventionsNot applicableResultsCRS-R total scores correlated with NCS-R total scores and subscores. CRS-R motor subscale correlated with NCS-R total scores and motor subscale and CRS-R oromotor subscale correlated with NCS-R total scores, as well as verbal and facial expression. There was a difference between participants with UWS and MCS in the proportion of grimace and/or crying during the noxious condition. We replicated previous findings on psychometric properties of the scale, but found a different score as the best threshold for nociception.ConclusionWe report a strong relationship between responsiveness to nociception and the level of consciousness. The NCS-R seems to offer a valuable tool to assess nociception in an efficient manner, but additional studies are needed to allow recommendations for clinical assessment of subjective pain experience.



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