Oh gosh, I don't even know what a nuclear stress test is? Assume it involves an injection and imaging after exertion? But that sounds cruel and unusual to me. I know they subjected my mum to multiple (more than 5) nuclear testing & imaging post her csf leak, she came through them ok. You remain in my prayers and I'll have to go google. Please try to remain calm Eva, my dad would say don't sweat the small stuff, worry not over what you have no control.