The timing of awakening after a coma caused by a brainstem hemorrhage must be judged based on the situation. As brainstem hemorrhages are relatively severe, there is generally no possibility of awakening if the patient's breathing, heartbeat, and circulation are not stable. If the patient can breathe normally off a ventilator and has a normal heartbeat and other vital signs, and pupil responses are also normal, then typically, they may awaken within one to two weeks. However, recovery times vary from person to person depending on the specifics of the condition, the location of the hemorrhage, and the surrounding tissue involved. Therefore, assessments should be made based on specific clinical signs at the time. Particularly with hemorrhages in the medulla oblongata, once coma ensues, it's often impossible to fully awaken the patient, and many succumb to complications later on. Therefore, adequate psychological preparation is essential in clinical settings.