Because he has no heart. From the Dept. of shit we already knew
Former Vice President Dick Cheney is recuperating from surgery to implant the kind of mechanical pump now being given to a small but growing number of people with heart failure so severe that they would most likely die within a few months without it.Most vampires don't.
The pumps are partial artificial hearts known as ventricular assist devices, and they come in various models. Mr. Cheney’s kind is about the size of a D battery and leaves most recipients without a pulse because it pushes blood continuously instead of mimicking the heart’s own pulsatile beat. Most such pulse-less patients feel nothing unusual. But they are urged to wear bracelets or other identifications to alert emergency room doctors as to why they have no pulse.