Dear friend, welcome and thanks for entrusting your query here at Healthcaremagic! I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here. A ‘widow maker’ heart attack is due to blockade of a major heart vessel called LAD. The death rates are high for such attacks and it is good luck to survive these. With modern medical treatment survivals are possible and your friend is one of them. Usually blood thinners like aspirin, statins, short term heparins, BP and heart muscle modifiers like ACEI, BBs are given. Despite treatments and survivals, these patients can variably have complications like heart failure, abnormal heart rates and even delayed sudden deaths. If there was any damage to the brain during the heart attach and consequent low blood supply, personality changes may occur or even otherwise due to psychological impact. As your friend’s damage is told to be minor, he may have lesser chance of complications, but he should be strict with treatment regimens advised. I hope to have answered your query satisfactorily. I would be glad to answer any further queries. Please ask for any clarifications before closing and rating this answer. Take care and please keep me informed of your progress at http://bit.ly/Dr-Prasad-Akole Good Luck! Thank you!!