Hello, welcome to HCM,
The situation is very much dangerous. The prognosis sometimes becomes very bad. Here first priority should be given to give him platelet as early as possible. It is a medical emergency.
I dont know., when you came to know, that his platelet count
is decreased? If you had the report earlier, and you could take him to hospital for platelet transfusion early. That could avoid the situation.
Whatever, hope for the best.