Most of doors in hospital without locks,however, some type of doors also with locks or with electric locks. On psychiatric units they are always active controlled by employee keycards usually. Otherwise the locks only come into use during a fire alarm. When a fire alarm sounds all doors shut locking people in units, hallways, waiting rooms everywhere so that wherever the fire may be it will not spread throughout the hospital. Only the stairwells remain unlocked.

There are also areas like surgical areas where the OR rooms(Operation Room) and floors that hold rooms for highly infectious disease patients that are always locked as well at all times for obvious reasons not just psychiatric units.

What's more, there are any number of locked doors in a typical hospital, safeguarding staff, at-risk patients, and psychiatric patients, for medication and pharmacy control, keeping people out of dangerous areas like utility control rooms and boiler rooms, the laundry, and janitor closets, even exterior doors are often locked, and all are capable of lockdown. This wasn’t always the case, an unfortunate sign of the times.

Patient room doors typically remain unlocked for staff convenience in making their rounds and to keep an eye on patients, as well as for visitors .

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