It is possible to wake up from a cerebellar hemorrhage that compresses the brainstem, but this is relatively rare.
The function of the brainstem is mainly to maintain the life of an individual. A series of important physiological functions, including heartbeat, respiration and digestion, are all related to the brainstem. If a cerebellar hemorrhage compresses the brainstem, it will affect the heartbeat, breathing, digestion and other functions to some extent.
If the center controlling respiration in the brainstem is damaged, respiratory depression or even apnea may occur, and respiratory depression for a long period of time will cause lack of oxygen in the brain, and you may not be able to wake up after a long period of time.
If the heartbeat function is affected, the amount of blood that the heart can pump to maintain the metabolism of the whole body will also be significantly reduced, which in turn will result in a lack of oxygen to the brain, and the situation of not waking up.
Some patients with small amount of bleeding may have less impact on the brain stem, and after active treatment, it is possible to wake up, but this situation is relatively rare.
It is recommended that patients with cerebellar hemorrhage should seek timely medical treatment under the guidance of a doctor to avoid delays in their condition.