alt Hacker News> heart attack and had to be revived from arrest
Worth pointing out that heart attacks and cardiac arrest are not the same. A heart attack (myocardial infarction) is insufficient supply of blood to the heart, which causes damage. Cardiac arrest is when the heart stops completely (and is much more serious).
Heart attacks can cause cardiac arrest (especially if not treated), but the most common outcome is not immediate death. With proper treatment maybe 95% of MCI patients will survive. The prognosis for cardiac arrest is much worse - ~90% of patients experiencing a cardiac arrest will not survive, even if temporarily revived.
Out-of-hospital arrests are that deadly. Those that occur in a hospital are somewhat more survivable.
Not a whole lot more, but if you're going to arrest you want to do it in a hospital with lots of nurses nearby.