Panic attack due to nitrous oxide?

Not sure if this is the right place to post this, but I recently had a somewhat terrifying wisdom tooth extraction while being put under nitrous oxide. I read beforehand that nitrous oxide is supposed to relax you or even give you a euphoric high, so I went in feeling very calm. After the initial administration (while they were giving me local), I started feeling tingles and kind of glazing over (the noises around me sort of played on repeat in my head which I found really scary). I think I... Panic attack due to nitrous oxide?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums