Évaluation de la conscience aux soins intensifs
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Transcript of Évaluation de la conscience aux soins intensifs
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www.comascience.org
Évaluation de la conscience aux soins intensifs
Steven LaureysComa Science GroupService de Neurologie &Centre de Recherches du CyclotronUniversité de Liège
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www.comascience.org
Disorders of consciousness Behavioural evaluation Electrophysiology Neuroimaging Ethics & quality of life
Terry Schiavo °1963, vegetative 1990, † 2005
Overviewdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
A brief history of coma
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Bjørn Ibsen (1952)
The resuscitation greats. Bjørn IbsenResuscitation. 2003
Rigshospitalet Copenhagen
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www.comascience.org
Pius XII (1957)
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Coma dépassé (1959)
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Jean Morelle & Guy Alexandre (1963)
The first organ transplant from a brain-dead donorNeurology, 2005;64;1938-1942
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Christiaan Barnard (1967)
Louis Washkansky
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Ad Hoc Committee Harvard (1968)
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Disorders of consciousness
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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QUESTIONS (répondez par OUI ou NON)
Age / Sexe (F-M) / Nationalité / Profession
1. L’esprit et le cerveau sont deux entités séparées
2. L’esprit est une entité purement physique
3. Une part spirituelle de nous-même survit après la mort
4. Chacun de nous a une âme qui est séparée de notre corps
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www.comascience.org
Mind brain beliefs
Zeman 2005 in The Boundaries of Consciousness (Ed) Laureys
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Laureys, Owen and Schiff, Lancet Neurology, 2005
Consciousness: arousal & awareness
NORMALCONSCIOUSNESS
AR
OU
SAL
AW
AR
ENES
SCOMA
AR
OU
SAL
AW
AR
ENES
S
VEGETATIVESTATE
AR
OU
SAL
AW
AR
ENES
S
MINIMALLYCONSCIOUS
STATE
AR
OU
SAL
AW
AR
ENES
S
LOCKED-INSYNDROME
AR
OU
SAL
AW
AR
ENES
S
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
Clinical evaluation
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
The absence of proof isn’t proof of the absenceAnonymous
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Brain death criteria
Wijdicks, NEJM 2001
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Motor activity in brain death
Lazarus' sign in brain deathBueri et al Mov Disord. 2000, 15:583-6
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www.comascience.orgLaureys et al., Current Opinion in Neurology, 2005
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Reflex versus voluntary
COGNITIVE CAPACITY
MO
TO
R R
ES
PO
NS
IVEN
ES
S
coma
VS
MCS
severe disability
eye opening
communication
moderate disability
goodrecovery
live independently
professional reinsertion
voluntary behavior
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Glasgow Coma Scale
4. Spontaneous
3. To speech
2. To pain
1. None
AROUSAL
E - eye opening
PAIN
PAIN
HELLO
C. Not assessable
Laureys et al., Yearbook of Intensive Care Medicine, 2002
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Teasdale & Jennett, Lancet, 1974
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Glasgow Coma Scale
AWARENESS
V - verbal response
A.C. CidentICU Liège,March 2002
WHERE AM I ?
STUPID !!! … OFF !?
GROAN
…
5. Oriented conversation
4. Confused speech
3. Inappropriate words
2. Incomprehensible sounds
1. None
T. Not assessable
Laureys et al., Yearbook of Intensive Care Medicine, 2002
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Teasdale & Jennett, Lancet, 1974
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Glasgow Coma Scale
AWARENESS
M - motor response
5. Localizes pain
4. Withdraws (normal flexion)
3. Stereotyped flexion
2. Stereotyped extension
1. None
6. Obeys simple commands CLOSE YOUR EYES
PAIN
PAIN
PAIN
PAIN
PAIN
Laureys et al., Yearbook of Intensive Care Medicine, 2002
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Teasdale & Jennett, Lancet, 1974
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
FOURdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Wijdicks et al, 2005
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
FOURdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Wijdicks et al, 2005
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Blink and you live
Laureys et al., Progress in Brain Research, 2005
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Pensez-vous que5. Le patient en état végétatif ressent la douleur? 6. Le patient en état de conscience minimale ressent la douleur?7. Le patient en locked-in syndrome ressent la douleur?
Être en état végétatif chronique est pire que la mort8A. du point de vue du patient? 8B. du point de vue de la famille?
Être en état de conscience minimale chronique est pire qu’être en état végétatif
9A. du point de vue du patient? 9B. du point de vue de la famille?
Être en locked-in syndrome est pire qu’être en état végétatif ou en état de conscience minimale
10A. du point de vue du patient?10B. du point de vue de la famille?
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Coma recovery scaledisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Fear for misdiagnosis
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Andreas Vesalius (1514-1564)
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Fear of being buried alive (1896)
1896, Karnice-Karnicki, chamberlain of the tsar of Russia
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Death and the media (1980)
Transplants - Are the donors really dead ?
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Misdiagnosis of brain death
Over last 50 years no single recovery recorded if properly declared brain death
(apnea test!)
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Misdiagnosis of vegetative state
n=103 post-comatose patients
45 clinical consensus diagnosis of “vegetative state”
27 Coma Recovery Scale diagnosis(Coma Recuperatie Schaal)
40% misdiagnosis38% Schnakers et al Ann Neurol ´06 Schnakers et al, submitted37% Childs et al Neurology ´9343% Andrews et al BMJ ´96
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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How to assess eye tracking ?
Vanhaudenhuyse et al, JNNP 2008
n=52
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Blinking to threat
n=91 VS patients 46 (51%) blinking to visual threat 17 (37%) recovered to MCS
11/45 without blink recovered MCS (24%)
blinking is no sign of consciousness
Schnakers, Giacino et al, submitted
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Electrophysiology
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgGosseries et al, in preparation
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
EEG entropydisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
MCS(n=15)
VS(n=15)
CONTROL(n=15)
tim
e-fr
eque
ncy
bala
nced
spe
ctra
l ent
ropy
75% sensitivity75% specificity
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www.comascience.orgLaureys, Perrin et al., Neurology, 2004
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Cognitive evoked potentialsdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
minimally conscious stateµV
0.0
-2.5
-5.0
-7.5
-10.0
2.5
5.0
7.5
10.0
OTHER NAMES
N1
ms100 300 500 800 1000 1300200 400 600 700 900 1100 1200 15001400
P3
OWN NAME
Perrin et al, Archives in Neurology, 2006
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Functional neuroimaging
The map is not the territoryAlfred Korzybski (1879-1950)
disorders of consciousness | clinical evaluation | neuroimaging | ethics & quality of life | future | conclusion
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resting metabolismactivation studies
passive active
disorders of consciousness | clinical evaluation | neuroimaging | ethics & quality of life | future | conclusion
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www.comascience.orgLaureys, Owen & Schiff, Lancet Neurology, 2004 (sleep data from Pierre Maquet; anesthesia data from Mike Alkire)
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Resting metabolismdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
“Awareness network”disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
n=60
Laureys et al, NeuroImage 1999
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www.comascience.orgVoss, … Schiff, Journal of Clinical Investigation, 2006
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
“miracle” recovery from MCS
Terry Wallis wakes from 19-year MCS
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgLaureys et al., Lancet, 2000
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Thalamo-cortical modulationdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgSchiff et al., Nature, 2007
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Thalamic stimulationdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgSchnakers et al, JNNP 2008
Amantadine in MCSdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
amantadine amantadine
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Neuroimaging
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
resting brain functionbrain activation studies
passive paradigmsactive paradigms
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Pensez-vous que11. on peut arrêter le traitement (nutrition et hydratation) chez le patient en état
végétatif chronique ?
12. on peut arrêter le traitement chez le patient en état de conscience minimale chronique ?
13. on peut arrêter le traitement chez le patients locked-in chronique?
Souhaiteriez-vous de continuer à vivre si vous étiez :
14. en état végétatif chronique
15. en état de conscience minimale chronique
16. en locked-in syndrome chronique
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Do they feel pain ?disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
GRIMACINGNO RESPONSE AWAKENING
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disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Laureys et al., Neuroimage, 2002Laureys, Nature Reviews Neuroscience, 2006
Vegetative is not apallicdisorders of consciousness | clinical evaluation | neuroimaging | ethics & quality of life | future | conclusion
Low level disconnected cortical activation
Painful stimulation
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"…a (wo)men’s brain is a mystery...and even more so in this state."
Hable con Ella
Pedro Almodóvar
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www.comascience.orgLaureys et al., Neurology, 2004
Emotional processingdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
Neuroimaging
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
resting brain functionbrain activation studies
passive paradigmsactive paradigms
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www.comascience.orgOwen, Coleman, Boly, Davis, Laureys and Pickard, Science, 2006
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Active fMRI paradigmsdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
Boly et al, NeuroImage 2007
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www.comascience.orgDi et al, Neurology, 2007
fMRI precedes the clinic vegetative minimally conscious
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Ethics &quality of life
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgLaureys et al., Progress in Brain Research, 2005
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Locked-in syndrome (LIS)disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.orgBruno, Pellas… Laureys, in preparation
disorders of consciousness | behavioural evaluation | electrophysiology | neuroimaging | methods, ethics & quality of life | perspectives
Quality of life in LISdisorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
QUESTION 17.Anamnestic Comparative Self Assessment (Bernheim et al)
X
X Locked-in patients n=70
X
X Matched healthy controls n=70QUESTION 18.Êtes-vous croyant : Non-Oui (quelle religion / pratiquant ?)
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Conclusions
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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Conclusions
• Diagnosis• misdiagnosis of VS (40%) • behavioral evaluation (CRS-R)• need for objective markers of consciousness
• Vegetative state• disconnection syndrome with impaired
fronto-parietal neuronal “workspace”
• Minimally conscious state• preserved emotional & pain perception
• Locked-in syndrome• right to communicate, right to die, right to live
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion
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www.comascience.org
www.comascience.org
also thanks to
Gustave Moonen MD PhDChristophe Phillips PhD IngQuentin Noirhomme PhD IngPierre Maquet MD PhD
Frédéric Pellas MD (Nîmes) Adrian Owen PhD (Cambridge)Louis Puybasset MD (Paris)Fabien Perrin PhD (Lyon)Haibo Di PhD (Zhejiang)Joe Giacino PhD, Nico Schiff MD (NY)
thanks to
Melanie Boly MDDidier Ledoux MDCaroline SchnakersAudrey VanhaudenhuyseMarie-Aurélie BrunoOlivia GosseriesVictor CologanPierre Boveroux MDAthena Demertzi
the patients & families
disorders of consciousness | clinical evaluation | electrophysiology | neuroimaging | ethics & quality of life | conclusion