Hi my husband (50, 5'11", 180 lbs) - had a kidney removed last year (cancer contained removed before it spread). High blood pressure under control w/med's. He has had two espisodes in the last two weeks - one receded and he was fine the other resulted in him passing out for over 10 min. syptoms are: shaking, vision goes white and he passes out (or feels like he is going to pass out). He also mentioned he is experiencing heart burn. EMT's took test - blood pressure fine, blood sugar fine, oxygen levels fine - released him as he was coherent.