Somatosensory evoked potential amplitudes correlate with long-term consciousness recovery in patients with unresponsive wakefulness syndrome
•In unresponsive wakefulness syndrome, SEP amplitudes correlate with consciousness recovery at least 1 year after brain injury.•SEP amplitudes are related to the degree of disability 6 months and 1 year after injury.•The use of SEP amplitudes improves prognosis accuracy in patients with unresponsive...
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| Published in: | Clinical neurophysiology Vol. 132; no. 3; pp. 793 - 799 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
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Elsevier B.V
01-03-2021
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| Abstract | •In unresponsive wakefulness syndrome, SEP amplitudes correlate with consciousness recovery at least 1 year after brain injury.•SEP amplitudes are related to the degree of disability 6 months and 1 year after injury.•The use of SEP amplitudes improves prognosis accuracy in patients with unresponsive wakefulness syndrome.
To prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in the year following brain injury in patients with vegetative state/unresponsive wakefulness syndrome (VS/UWS).
SEPs of 42 patients with VS/UWS were recorded 51.7 ± 23.3 days post-injury. N20–P25 amplitudes were compared between patients with and without consciousness recovery at 6 months and 1 year post-injury.
SEPs were present in 21 patients and bilaterally absent in 21 patients. N20–P25 amplitudes were significantly higher in patients who recovered consciousness than in those who died or did not recover consciousness at 6 months (median, 4.6 vs. 1.9 μV; P = 0.004) and 1 year (median, 4.6 vs. 2.1 μV; P = 0.02) after injury. The lowest N20–P25 amplitude in a patient who recovered consciousness was 2.15 μV. N20–P25 amplitudes correlated significantly with Coma Recovery Scale-Revised and Disability Rating Scale scores at 6 months and 1 year post-injury (both P < 0.05).
In patients with VS/UWS, SEP amplitudes are related to consciousness recovery and disability at 6 months and 1 year post-injury.
The evaluation of SEP amplitudes can help to refine prognoses for patients with VS/UWS. |
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| AbstractList | To prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in the year following brain injury in patients with vegetative state/unresponsive wakefulness syndrome (VS/UWS).
SEPs of 42 patients with VS/UWS were recorded 51.7 ± 23.3 days post-injury. N20-P25 amplitudes were compared between patients with and without consciousness recovery at 6 months and 1 year post-injury.
SEPs were present in 21 patients and bilaterally absent in 21 patients. N20-P25 amplitudes were significantly higher in patients who recovered consciousness than in those who died or did not recover consciousness at 6 months (median, 4.6 vs. 1.9 μV; P = 0.004) and 1 year (median, 4.6 vs. 2.1 μV; P = 0.02) after injury. The lowest N20-P25 amplitude in a patient who recovered consciousness was 2.15 μV. N20-P25 amplitudes correlated significantly with Coma Recovery Scale-Revised and Disability Rating Scale scores at 6 months and 1 year post-injury (both P < 0.05).
In patients with VS/UWS, SEP amplitudes are related to consciousness recovery and disability at 6 months and 1 year post-injury.
The evaluation of SEP amplitudes can help to refine prognoses for patients with VS/UWS. OBJECTIVETo prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in the year following brain injury in patients with vegetative state/unresponsive wakefulness syndrome (VS/UWS). METHODSSEPs of 42 patients with VS/UWS were recorded 51.7 ± 23.3 days post-injury. N20-P25 amplitudes were compared between patients with and without consciousness recovery at 6 months and 1 year post-injury. RESULTSSEPs were present in 21 patients and bilaterally absent in 21 patients. N20-P25 amplitudes were significantly higher in patients who recovered consciousness than in those who died or did not recover consciousness at 6 months (median, 4.6 vs. 1.9 μV; P = 0.004) and 1 year (median, 4.6 vs. 2.1 μV; P = 0.02) after injury. The lowest N20-P25 amplitude in a patient who recovered consciousness was 2.15 μV. N20-P25 amplitudes correlated significantly with Coma Recovery Scale-Revised and Disability Rating Scale scores at 6 months and 1 year post-injury (both P < 0.05). CONCLUSIONSIn patients with VS/UWS, SEP amplitudes are related to consciousness recovery and disability at 6 months and 1 year post-injury. SIGNIFICANCEThe evaluation of SEP amplitudes can help to refine prognoses for patients with VS/UWS. •In unresponsive wakefulness syndrome, SEP amplitudes correlate with consciousness recovery at least 1 year after brain injury.•SEP amplitudes are related to the degree of disability 6 months and 1 year after injury.•The use of SEP amplitudes improves prognosis accuracy in patients with unresponsive wakefulness syndrome. To prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in the year following brain injury in patients with vegetative state/unresponsive wakefulness syndrome (VS/UWS). SEPs of 42 patients with VS/UWS were recorded 51.7 ± 23.3 days post-injury. N20–P25 amplitudes were compared between patients with and without consciousness recovery at 6 months and 1 year post-injury. SEPs were present in 21 patients and bilaterally absent in 21 patients. N20–P25 amplitudes were significantly higher in patients who recovered consciousness than in those who died or did not recover consciousness at 6 months (median, 4.6 vs. 1.9 μV; P = 0.004) and 1 year (median, 4.6 vs. 2.1 μV; P = 0.02) after injury. The lowest N20–P25 amplitude in a patient who recovered consciousness was 2.15 μV. N20–P25 amplitudes correlated significantly with Coma Recovery Scale-Revised and Disability Rating Scale scores at 6 months and 1 year post-injury (both P < 0.05). In patients with VS/UWS, SEP amplitudes are related to consciousness recovery and disability at 6 months and 1 year post-injury. The evaluation of SEP amplitudes can help to refine prognoses for patients with VS/UWS. |
| Author | D'Agostino, Tiziana Bagnato, Sergio Prestandrea, Caterina Rubino, Francesca Boccagni, Cristina |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/33578338$$D View this record in MEDLINE/PubMed |
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| Keywords | Hypoxic brain injury SEPs Traumatic brain injury Prognosis Vegetative state Disorders of consciousness |
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| Snippet | •In unresponsive wakefulness syndrome, SEP amplitudes correlate with consciousness recovery at least 1 year after brain injury.•SEP amplitudes are related to... To prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in the year... OBJECTIVETo prospectively investigate relationships of cortical somatosensory evoked potential (SEP) amplitudes with consciousness recovery and disability in... |
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| SubjectTerms | Disorders of consciousness Hypoxic brain injury Prognosis SEPs Traumatic brain injury Vegetative state |
| Title | Somatosensory evoked potential amplitudes correlate with long-term consciousness recovery in patients with unresponsive wakefulness syndrome |
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