Hehe. About two posts in I got the image of someone with oxyrush nanites getting a hole the size of a bowling ball blown in their chest and then just tying a tourniquet around their neck.

The glucose issue would come up pretty fast though. It's all about making that ATP.

Isn't there an Edge that makes a Character Bi-Cardic?
And where am i remembering the decentralized heart from?

The character possesses a second heart located in the right half
of his torso that augments the normal heart in maintaining the
cardiovascular system. Bicardiac characters can perform strenuous
exercise for longer periods of time due to increased blood supply
and higher pulse rates that would cause tachycardia in normal
people. They can take a maximum of 8 boxes of Stun or Fatigue
damage instead of the usual 6 (see Fatigue Damage, p. 155, SR4).
Bicardiac is compatible with synthacadium, though only the
cardinal heart can be augmented with bioware.