That's not necessarily the case -- although it's one possibility. You could also be charged with involuntary manslaugher or nothing depending on state and local

That's not necessarily the case -- although it's one possibility. You could also be charged with involuntary manslaugher or nothing depending on state and local laws, what the prosecutor believes your state of mind is and, frankly, the whim of the prosecutor and the strength of your defense attorneys. Conversely, you could face a higher charge for exactly the same reasons. There's what should happen -- which will vary according to local law, at least in the US -- and then what will happen, which will vary significantly depending on the DA.