What Causes Hemorrhagic Stroke?
Would Enbrel or Edaravone be promising any positive effect?
Not promising.
Detailed Answer:
I read your question carefully and I am sorry about your wife's condition. As a neurologist I deal with such situations often and I know how hard it is for the whole family.
Regarding your specific question, I don't know of any use at all of Enbrel for any stroke patient, it is a drug used to treat patients with some autoimmune rheumatological conditions.
As for Edaravone there are some indications about a modest benefit, but it is studied in ischemic not hemorrhagic stroke, even in ischemic stroke its not yet proven, and anyway it's a benefit which has been suggested when it is used in the first 24 hours from the onset of the disease. So I don't see much use in your case.
Generally speaking, there are out there several drugs which claim to help recovery and improve outcome after stroke (cerebrolysine, neuroaid, piracetam, gliatiline etc etc. However non of them has been proven in comparative studies to have any effect, they are not present in expert guidelines, and it is hard to know when their supposed benefit is only a commercial one, trumpeted by pharmaceutical companies. You can try them but I can't recommend them from a sound scientific evidence based point of view. Also most of them are of benefit when used early in the course of the disease. In the particular case of hemorrhage from an aneurysm only Nimodipine started during the first 2 days after the hemorrhage has shown a modest protective benefit on the brain.
Most improvements after stroke happen in the first 3-6 months. After that period, especially after 2 years as in your case, I am afraid not much is expected, I am sorry to have to say that.
I remain at your disposal for further questions.
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Detailed Answer:
Thank you for your feedback.
I did an internet research about the Enbrel claims of efficacy in stroke. Honestly I didn't find them convincing at all. First I found nothing in its mechanism of action to suggest how did it improve stroke recovery. It suppresses a factor active in the immune response, which can make sense for its effect in autoimmune rheumatological conditions, but stroke isn't related to immune activity and I don't really see how can it be effective. Also the more claims a drug has the more doubtful I am generally and it seems really miraculous to have all of a sudden a drug which acts in stroke, Alzheimers and other conditions.
The claims about its effect were made by a couple of doctors (internists) with some case reports. Any drug after case reports is investigated by comparing its effect with placebo in similar groups of patients and I didn't see any such study, even though these doctors make such claims since at least 2011 from what I found. So I would really spare the 5000$ I read the injection costs (which would be repeated again in time).
As for hyperbaric oxygen I don't have any personal experience as it is not approved for this indication, so its only application would be in the setting of a trial. However there are small trials, comparing use and non-use, which indicate effect even after a long time from stroke(the longest 36 months). It is not enough to make a recommendation, it is a question of small trials and more is needed, but its use would at least make sense and would be justifiable. So if offered by your healthcare system for that indication it could be tried.
I hope to have been of help.