There's a big shootout near the end in which many people are shot (blood sprays visible).
There are two prolonged brain surgery scenes, depicted with details seen in close-ups, including one that involves an aneurysm rupture, resulting in large amount of blood squirting from an open wound on the brain.
The depictions are realistic and hence could be disturbing to some viewers.,
In addition, there is a brief scene where a patient slits his wrist in close-up, as well as a prolonged shootout between the police and thugs in the hospital ward with injuries sustained and blood spurts from gunshot wounds.