If the nerves on that side were weaker or mildly damaged, I would think any Nitrous exposure would accelerate that.
The studies where Nitrous has caused problems were in people with marginally low B12 to begin with. People with good stores of B12 may not have a reaction from one Nitrous administration.
What other anesthetics were used? Any neuromuscular blocking agents?
This link shows neuromuscular blockade and how it works.
http://en.wikipedia.org/wiki/Muscle_relaxant
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Weezie looking at petunias 8.25.2017
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