When I was a small child (many years ago!), I was taken into hospital during the night. The next day I was stripped and put in a bath, my rather new nightie went off to the hospital laundry, never to be seen again. I remember Mum being non too pleased.
many years ago I was in hospital for 5 days and I know for certain I did not send any washing out so I probably had enough knickers for the 5 days and washed them myself when I got home.