Escape from hospital

There is no dentist with a long line to him, from which you really want to get up and leave, although this is no less scary, the situation is different. In the middle of the night, you woke up in one of the hospital wards from a strange noise. Someone groans and groans. Something is clearly not in order, its time to get out of the dirty bed and take up your hidden knife. But it seems that the knife will not be enough, so you need to see if one of the patients was reasonable and hid something hea...