<s>[INST] My husband had been having a pain in the left side of his stomach just about the last rib area,diverticulitis was diagnosed, given cipro for antibiotic, died in his sleep a week later, autopsy saying b75% blocked arteies in 3 of them, no chest pain, no shortage of breath, sounds funny to me, what could have caused his death? [/INST] Hi and welcome to HCM. I am sorry about your husband. If you mean coronary arteries blockage then I dont know what is so mysterious to you . It seems like he had a fatal heart attack. YOu cant know did he have pain before death occured,it can last for 1-2 minutes. It is not uncommon that people dont have angina pectoris or any other chest pain before heart attack. It depends from man to man. Wish you good health. </s>