If i had a heart attack, what is the likelihood that i will not survive?

Dependends on risk: Survival likelihood depends on the extent of their heart attack and the health and age of the patient. One commonly used tools to calculate likelihood of dying considers age, history of diabetes, high blood pressure, or angina, evidence of heart failure, severity of attack, weight, and timing of therapy. Risk of dying within 30 days with mid-high score is 1-36%. After 30 days, it's 1-17% for 1 yr.

Depends: Many heart attacks result in sudden death, but this can improved by the use of CPR and automatic defibrillators in the community. Large heart attacks are frequently fatal even with prompt treatment, but smaller ones have a good possibility of survival. About 40% of heart attacks occur without prior symptoms and can cause sudden death.