
Carbon Monoxide Poisoning, Tremors, Unconscious. How Severe Is The Brain Damage?

EYE RESPONSE
1. No eye opening
2. Eye opening in response to pain. (Patient responds to pressure on the patient’s fingernail bed; if this does not elicit a response, supraorbital and sternal pressure or rub may be used.)
3. Eye opening to speech. (Not to be confused with an awaking of a sleeping person; such patients receive a score of 4, not 3.)
4. Eyes opening spontaneously
Verbal response
1. No verbal response
2. Incomprehensible sounds. (Moaning but no words.)
3. Inappropriate words. (Random or exclamatory articulated speech, but no conversational exchange)
4. Confused. (The patient responds to questions coherently but there is some disorientation and confusion.)
5. Oriented. (Patient responds coherently and appropriately to questions such as the patient’s name and age, where they are and why, the year, month, etc.)
Motor response
1. No motor response
2. Extension to pain (abduction of arm, external rotation of shoulder, supination of forearm, extension of wrist, decerebrate response)
3. Abnormal flexion to pain (adduction of arm, internal rotation of shoulder, pronation of forearm, flexion of wrist, decorticate response)
4. Flexion/Withdrawal to pain (flexion of elbow, supination of forearm, flexion of wrist when supra-orbital pressure applied ; pulls part of body away when nailbed pinched)
5. Localizes to pain. (Purposeful movements towards painful stimuli; e.g., hand crosses mid-line and gets above clavicle when supra-orbital pressure applied.)
6. Obeys commands. (The patient does simple things as asked.)
His score:
Eye Response - 4
Verbal Response - 1
Motor Response - 4
Thanks for the query.
One of the major concerns following acute carbon monoxide poisoning is the severe delayed neurological manifestations that may occur. Problems may include difficulty with higher cognitive functions, memory loss, amnesia, psychosis, irritability, a strange gait, speech disturbances, Parkinson's disease-like syndromes, cortical blindness, and a depressed mood.
Permanent neurological sequelae may occur in up to 50% of poisoned patients. It is difficult to predict who will develop delayed sequelae. Poor outcomes are seen in older patients, loss of consciousness at the time of poisoning and initial neurological abnormalities which are seen in this case.
Brain damage is confirmed following MRI or CAT scans. If no damage is seen on the MRI scan and with the given level of conscious state and the motor movements, I personally feel recovery is possible with minimal neurological damage. However to tell you frankly outcomes are often difficult to predict following poisoning.
I thank you again for the query. I hope you found my response to be helpful and informative. I you have any additional concerns I would be happy to address them.
Sincerely,
Dr Shiva Kumar R
Consultant Neurologist & Epileptologist


If MRI does not show any signs of damage, the problem may lie at the cellular level which will not be picked up by conventional MRI.
Loss of consciousness as already mentioned is not a good sign and delays the Neurological recovery.
Based on the details given to me, he has shown some signs of recovery in a week. However it is difficult for me to predict the outcome and the duration of his illness.
I thank you again for the query. I hope you found my response to be helpful and informative. I you have any additional concerns I would be happy to address them. Please accept my answer in case you have no follow up query.
Sincerely,
Dr Shiva Kumar R
Consultant Neurologist & Epileptologist

Answered by

Get personalised answers from verified doctor in minutes across 80+ specialties
