Ruined Hospital Escape 4

This was a popular hospital once and it is in a ruined state now. You used to work here and today you came into the ruined hospital for old times’ sake and got trapped. Now, you are in trouble as you are not able to get out. You need to find the key if you want to escape from the ruined hospital. The only way to escape is by finding the key to the door. Use objects you can find in the hospital and solve puzzles to get the key and escape