Chris B,
I totally understand your concerns and you have a lot of good reasons to be concerned. I worry more when in Negril than I do in other areas of Jamaica. With Cornwall Regional and Savana La Mar being the two closest hospital alternatives doesn't do much to calm those concerns.
Negril is pretty much a "frontier village". What I mean is that it is not a major area close to a medical hub so a heart attack or a major injury is a little riskier to survive due to it's fringe location resulting in length of time before competent treatment. If I had a truly life-threatening event while in St. Elizabeth, I probably wouldn't make it either. A major heart attack would surely be fatal. My best bet would be Mandeville Hospital if I could last long enough to make it there.
I have been visiting Jamaica for 4 decades as well and I feel a lot more vulnerable as each year goes by but I am a person who lives his life in the moment. I accept the risks for the reward I get from living in Jamaica.
As I get older and perhaps a little more vulnerable, I will consider moving to a house across the street from the Mandeville Hospital.
Jamaica is a lot bigger than just Negril.
I hope you find the answer that will calm your concerns.The human body has limitations. The human spirit is boundless.
- Dean Karnazes
Peace and Guidance