Consider also that hospitals are a good place to hang out if you want to get a cleaning product and antibiotic resistant bacterial infection.

This is why I covered my existing procedure "wounds" with loads of vaseline and securely bandaged them, before I went in for another, longer, procedure. The nurses and doctors were completely understanding and made sure to tell anyone involved, which was good to hear.

Of course, I'm not sure how effective that sort of prep would be, but I hope I reduced my risk, at least.

That’s probably a really good idea, smart thinking.

It’s a wonder hospitals don’t require existing wounds to be dressed in touch a way prior to admission.

It's a different issue. You can't autoclave your spaceship for example. Or use the same substances they use, though you might be able to use other ones