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Neurobehavioral recovery in patients who emerged from prolonged disorder of consciousness: a retrospective study

 Hoo Young Lee  ;  Jung Hyun Park  ;  Ae Ryoung Kim  ;  Misun Park  ;  Tae-Woo Kim 
 BMC NEUROLOGY, Vol.20(1) : 198, 2020-05 
Journal Title
Issue Date
Brain injuries ; Consciousness disorders ; Rehabilitation ; Treatment outcome
Background: We investigated the clinical course of patients with prolonged disorders of consciousness (PDoC), predictors of emergence from PDoC (EDoC), and the temporal dynamics of six neurobehavior domains based on the JFK Coma Recovery Scale-Revised (CRS-R) during the recovery. Methods: A total of 50 traumatic and non-traumatic patients with PDoC were enrolled between October 2014 and February 2017. A retrospective analysis of the clinical findings and neurobehavioral signs was conducted using standardized methodology such as CRS-R. The findings were used to investigate the incidence and predictors of EDoC and determine the cumulative pattern of neurobehavioral recovery at 6 months, 1 year, and 2 years post-injury. Results: The results showed that 46% of the subjects emerged from PDoC after 200 median days (64-1197 days) of injury onset. The significant predictors of EDoC included minimally conscious state (MCS) (vs. vegetative state), higher auditory, communication, arousal, total CRS-R scores, shorter lag time post-injury, and the absence of intra-axial lesions. In terms of cumulative recovery of motor and communication signs in patients who emerged from PDoC, 39 and 32% showed EDoC at 6 months post-injury, and 88 and 93% exhibited EDoC at 2 years post-injury, respectively. Conclusions: Nearly half of the patients with PDoC recovered consciousness during inpatient rehabilitation. MCS, shorter lag time, the absence of intra-axial lesions, higher auditory, communication, arousal, and total CRS-R scores were important predictors for EDoC. Motor scores in the early stage of recovery and communication scores after prolonged intervals contributed to the higher levels of cumulative EDoC.
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1. College of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학교실) > 1. Journal Papers
Yonsei Authors
Park, Jung Hyun(박중현) ORCID logo https://orcid.org/0000-0003-3262-7476
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