Actually, I'm not sure what you are talking about. And, no question is stupid.
But, to answer what I thought was the question. I work in a hospital, rather by comparison. We have about 200 beds. Our E.R. is in the front of the hospital just off of the front lobby. So, our front doors are ALWAYS OPEN. We do usually have a security gaurd in the area to keep track of who is comming and going, but, this isn't alway the case. I guess I do feel queezy at times that the hospital is always open for anyone who wants to come in. And, people do tend to wander around the hospital. Our C.E.O. is really a nice guy, but, he doesn't really understand that there should be some rules regaurding visiting hours etc...
We'll have "friends" visiting patients at 2a.m. in the I.C.U.. And, although they may not cause too much trouble they are sometimes loud and disturb others. Because of our open hospital policy we aren/t at liberty to do anything about this.
Our IMC is down the hall from L/D and post partum. And, this area often times is mobbed with young children, families of women etc... I don't get it really, when I had my children only husbands (or signifigan others) were allowed in the area. But, we have loads of people running through.
So, if safety is the question we have virtually none in our hospital. I have a feeling something tragic will happen some day and it will be a "what in the world was this hospital so open for" type of situation.. Any way, I hope this answers your question