Paralysed, rushed to the hospital

Paralyzed, rushed to the hospital, but a doctor still say it wasn’t in time for the injection.
 
Dear doctor,
After having dinner, my mother felt weak, so we rushed to the hospital. About 2 hours after that, we reached the doctor. After consulting with many doctors, the last one came out and said that my mother has paralyzed and arrived too late. An injection to dissolve blood clots could not be done, resulting in the hospitalization for almost a month until now, but her arm still has little to no strength. I would like to ask,
 
Within how many hours would it take to consider not too late for injecting thrombolytic drugs?
Answer
I want you to understand first that there are 2 types of paralysis.

Type 1 : Acute intracerebral hemorrhage (ICH) where the blood vessel within the brain bursts in a sudden, lead to blood congestion in the brain that need surgery to remove the congested blood.

Type 2 : Constricted blood vessels in the brain with a blood clot clogging the narrowing area. If reaching the doctor sooner, then inject the throbolytic drug, if arriving later then only finger cross and wait expectedly for the body to recover.

The minutes of life in management of type 2 paralysis in the past is about 3 hours. From the onset of symptoms toward reaching a doctor's hand through the process of thoroughly examination.(In this case, it may go through several steps, up to asking the relative including sharing the benefit and the risks) which in many cases, is still time consuming for relatives to call these or those person. Some even take more time to analyze. Every step mentioned above must be within 3 hours. Except some limitations, such as patients with high blood pressure or have recently undergone major surgery that will benefit from the injection of thrombolytic drugs more than usual. Therefore, it can be concluded that paralysis is the same urgent matter as a heart attack. The sooner patient arrive, the better patient recover. Olden days people likely say once having paralysis, those wouldn't be able to help themselves for the rest of their lives. That's wrong.

However, a group of European physicians has been researched in  the ECASS III by recruiting 823 paralysis patients who reached the hospital within more than 3 hours but not over 4 and a half hours. Patients were divided into 2 groups; a group of injected thrombinolytic agents and a group of injected water which were said to be a medicine, then wait for 1 month and 3 months to see the results. People who injected real medication recovered faster. So it can be concluded that if a blood vessel in the brain burst, “reaching a doctor late then receiving an injection lead to excessive bleeding” won’t be true and increase the minutes of life for paralyzed patients from 3 hrs to 4 hrs and a half.