<s>[INST] 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. [/INST] Hi,Thanks for writing in.Since your husband is a cancer survivor, it is important to follow up regularly with his doctor. If he is having these symptoms then it might help to evaluate him in detail and know if the present situation has anything to do with his earlier cancer. Though the kidney was removed and he has been doing well, a recurrent cancer cannot be ruled out without investigating in detail.Shaking violently might be a type of seizure and this can have a cause in the brain. Please discuss in detail with his doctors and know if he requires a brain CT or MRI scan. This might show any suspected cause in the brain.The heart burn might be due to gastritis and this can be treated by avoiding foods that cause stomach irritation. Please do not worry. </s>