I gave unstable angina pectoris according to my cardiologist. I believe he told me since I had a heart attack and 5 stents later, that I may feel pressure or pain in my chest at times. It may be while I’m sitting or it could happen while I’m doing some work. He’s right on both counts! I just relax and try to sit still when it comes on. I have never felt like I was having another heart attack but am so glad he warned me about the situation that might arise. I always tell the person I’m with what us going on just in case.
Not sure if this is the answer you were looking for but hope it may help you or someone else. It doesn’t happen very often and is unpredictable which I think is why it’s called unstable. Good luck to us all and God Bless!

I have 4 blockages, 50%. And one tiny one that is 100%. They cause angina. If I'm too busy rushing around, or feeding the farm in 100+ degree weather it creeps up and I slow down. Only one heart attack, thank goodness.

I’ve had both. My cardiologist explained that the angina I have now is due to the size of my grafts. They’re not as big as the arteries that were blocked so blood flow gets backed up like traffic on a four lane highway trying to merge to two lanes. The pain I experienced with blockages has been different from one event to another. I’ve had the elephant on my chest feeling, pain that radiated up through my neck and into my jawbone, making me feel like I was choking, and weird pain shooting down my arms that made me feel like I needed to rip them off to get relief.

Sorry, but believe it or not, I have not had an Angina attack. When I had the heart attack the pain was in my left shoulder, not in my chest

Angina is cause by a restriction of the blood flow. In my case it was because I had two blocked arteries but others have the pain from other parts of the heart. Try www. Cardiac college.ca for some real medical experts.