the item isnt showing up when you press to leave the area?
id say try restarting your computer and retrying, or even deleting the game and redownloading! sometimes files can get corrupted and result in weird glitches like that when you install the game!
you wanna go straight down from the hospital, click space or enter to go to the next area, once the item appears behind, grab it and then continue down and it should continue like normal!
sorry for the issue!