NotSpaghetti
Is Margomar's heart issue "unstable" David?
We don't know how recent the diagnosis is but it sounds to me that it's come "out of the blue" - which can initially be pretty scary. Even the OP says she is "probably being unreasonable".
I have been taking blood pressure tablets for 3 yrs it's under control and stable, Ive declare the treatment and insurance has accepted the risk
The OP says the condition is recently diagnosed it could be controlled quickly it might get worse, at present you don't know. The insurance will most likely refuse insurance, it's possible they would exclude any heart event as a preexisting condition, so travel at your own risk.

