Hi, a close friend, aged 39, recently passed away following a sudden cardiac arrest. He had apparently passed a TMT and lipid profile check only six months ago. It was found that he had a 100% block in his heart and despite the emergency angioplasty, he didn't make it. My question therefore is: how come this block escaped the TMT and other tests? I am scheduled to go for a TMT next week, and I'm wondering if it is any indicator at all! Thanks Kay