What killed Vito Corleone?

Can you clarify the context of the question? Are we referring to Vito Corleone, the fictional character from the Godfather franchise, or a real-life individual with a similar name? Assuming we're discussing the fictional character, Vito Corleone's death is a pivotal moment in the story. In the first film, Vito suffers a heart attack and eventually passes away due to his injuries sustained during an attempted assassination. So, in essence, what killed Vito Corleone was a combination of his age, pre-existing health conditions, and the injuries he suffered during the attack. Is there a specific aspect of Vito's death you'd like me to elaborate on?