The answer is no, there is no mandatory time. Really, it is entirely dependent upon the severity of the stroke and the condition of the individual and what treatments have been provided in order to stabilize or treat the individual. That can be different for every person every time. I can say that the doctors and the nurses will obviously want to keep the patient in until they are confident that leaving the health or the hospital will not put them at adverse risk, but there is no set time because every case is unique.