Hello!
Welcome and thank you for asking on HCM!
I understand your concern and would explain that the chances of a stroke reoccurrence depend on his cardiovascular risk factors, the cause of his primary stroke and the preventive treatment that he is taking.
I would like to have some more information on his current medication and on his past medical history and possible risk factors (smoking,
high blood pressure, diabetes, atrial
fibrillation).
It is also necessary to know the situation of his cervical arteries (possible atherosklerotic plaques) and brain collateral circulation.
With the best preventive therapy (anticoagulation or antiplatelet agents, coupled with statins and a better control of risk factors like
hypertension and diabetes) the chances of re-occurrence would be up to 30-50%.
It is also important to continue
rehabilitation, even if 6 months have passed away. This will keep him active, avoid pneumonia and bed sores and also muscular
spasticity which is a secondary complication of paralysis after stroke.
Hope you will find this answer helpful!
Kind regards,
Dr. Iliri