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Titolo:
HOW RELIABLE IS THE PREDICTIVE VALUE OF SEP (SOMATOSENSORY-EVOKED POTENTIALS) PATTERNS IN SEVERE BRAIN-DAMAGE WITH SPECIAL REGARD TO THE BILATERAL LOSS OF CORTICAL RESPONSES
Autore:
POHLMANNEDEN B; DINGETHAL K; BENDER HJ; KOELFEN W;
Indirizzi:
UNIV HEIDELBERG,MANNHEIM HOSP,DEPT NEUROL,THEODOR KUTZER UFER D-68135MANNHEIM GERMANY UNIV HEIDELBERG,KLINIKUM MANNHEIM,DEPT ANESTHESIOL D-68135 MANNHEIM GERMANY UNIV HEIDELBERG,KLINIKUM MANNHEIM,DEPT PEDIAT D-68135 MANNHEIM GERMANY
Titolo Testata:
Intensive care medicine
fascicolo: 3, volume: 23, anno: 1997,
pagine: 301 - 308
SICI:
0342-4642(1997)23:3<301:HRITPV>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEVERE HEAD-INJURY; COMATOSE CHILDREN; PROGNOSTIC UTILITY; CEREBRAL TRAUMA; CONDUCTION; TIME;
Keywords:
SEVERE BRAIN DAMAGE; COMA; BRAIN DEATH; SOMATOSENSORY EVOKED POTENTIALS; PROGNOSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
B. Pohlmanneden et al., "HOW RELIABLE IS THE PREDICTIVE VALUE OF SEP (SOMATOSENSORY-EVOKED POTENTIALS) PATTERNS IN SEVERE BRAIN-DAMAGE WITH SPECIAL REGARD TO THE BILATERAL LOSS OF CORTICAL RESPONSES", Intensive care medicine, 23(3), 1997, pp. 301-308

Abstract

Objective: In patients sustaining severe brain damage (SBD), prediction of later outcome is often very difficult, in particular under conditions of therapeutic management like relaxation and intravenous phenobarbital. Somatosensory evoked potentials (SEP) correlated best with later prognosis and expected neurological deficit. In detail, the primary bilateral loss of cortical responses (BLCR) is regarded to be a reliable marker for poor prognosis. The goal of the following prospective study was to reassess the prognostic value of early serial median nerve SEP recording in severe brain damage in comparison to other neurophysiologica, clinical, and neuroradiological parameters and, additionally, to test the hypothesis, that the BLCR-pattern is always associated with a poor prognosis and is never reversible. Design: Prospective study. Setting: Anaesthesiological hospital intensive care unit. Patientsand participants: 42 comatose patients with severe brain damage (29 males/13 females), mean age 39.6 +/- 19.3 years, mean initial Glasgow Coma Scare (GCS) 6.6 +/- 3.1, investigated by means of median somatosensory evoked potentials (SEP) and brainstem auditory evoked potentials (BAEP) with serial recordings on day 1, 3 to 4, and 8 to 1, and repeated cranial computerized tomography. Measurements and results. We classified the outcome according to the Glasgow Outcome Scale (GOS). Our data showed a high correlation of initial SEP scores (Spearman correlation coefficient = - 0.70) with outcome for both a favorable and an unfavorable prognosis (p = 0.0001). The reliability increased with serial recordings. The SEPs showed superiority to parallel brainstem auditoryevoked potentials (Spearman correlation coefficient = - 0.50, p = 0.0007), GCS, and standardized neuroradiological criteria. Primary (BLCR)occurred in 16 patients (38 %) and implied a fatal prognosis in all adult patients (n = 15, specificity = 93.3 %, sensitivity = 59.3 %). Incontrast, a young child with predominant brainstem hemorrhagic contusions regained consciousness and developed mild to moderate neurological deficit (GOS 3-4) during long-term follow-up of 4 years. This clinical improvement paralleled bilateral asymmetric recovery of cortical SEP responses. Conclusions: SEP allow an early reliable assessment of both poor and good prognosis in SBD, in particular when applied serially. BLCR does not always imply a fatal diagnosis, as a circumscribed contusional lesion rarely may lead to selective reversible blockage of ascending somatosensory pathways in the brainstem.

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Documento generato il 04/08/20 alle ore 10:50:15