When I had my surgery I assumed I would not be able to vomit. I always carry anti-nausea drugs, just in case. about a year ago I wasn't feeling well, but had no nausea. Suddenly, I vomited. And yes...I mean vomited. So, I'm one of those who can vomit after a Nissen. Still, I wouldn't recommend it. I took my anti-nausea drugs immediately, and continued taking it every four hours until I was better. It worked, too...If I went a moment past the four hour mark, I'd be heading to the bathroom.
I'm happy to deal with this issue, since my Nissen has restored the health of my lungs--and they were very sick!