One time when I was in, another lady had a very similar last name as mine, actually it was off by one letter. Her first name was Jean, I am Jenn so it was confusing at times (especially with dietary) Luckily, I am on the floor enough where nurses know who I am (kind of like Norm on Cheers lol) so they always double check. But I could definitely see where it could be a problem.
As a former nurse, I used to bring in the actual Med-Ex with the orders written on it, check the bracelet and ask the patient who they were if they were oriented (they always hated this because they would always say "you know who I am, why do you have to ask every time you come in?) This was to prevent medication errors that could kill patients, and if every nurse did this, there wouldn't be any unless there was an error in transcription to the Med-Ex itself (which happens) and then you need to check the chart. As you can see, there are so many points where things can go wrong medication wise from order to administration of the med. So scary....
Jenn 40 w/CF