Sorry, routine medical care is probably fine on island. My personal experience with the ER on the Dutch side was not particularly good, but my view of it is probably skewed by the fact that they gave me a DIAPER to use for a sling when I hurt my arm.. And for sure, expats should have medical evac insurance. Regarding the hospital in Guadelupe, I have no personal experience with it, but that's where I always see people with very serious injuries get sent, so I assume, without knowing, that they do have good specialists there.

Everyone has to make their own decisions, but I still would be very wary about travelling to the island with such a serious condition..