There are primarily 2 types of stroke
. One is ischaemic stroke- where there is loss of blood supply to a part of the brain. Here, if the patient is taken to hospital within a few hours of the onset of symptoms, they are suitable for thrombolytic treatment. This is aimed at opening the blocked arteries of the brain. For patients who present later than the time frame, the treatment is essentially prevention of future stroke by giving medicines like aspirin
etc. The other type of stroke is haemorrhagic- which means that there is bleeding into the brain substance. For this type, usual treatment is supportive, but in some cases where there is increased pressure on the surrounding brain there may be a need to operate and take out the clot.
Hope this helps? De let me know what type of stroke your granny has and if there is any more queries you have?