A heartbeat signifies that the heart is pumping. There are two parts to this: Part 1: The blood collects in the heart’s two bottom chambers. There is a small contraction of the heart’s two ...

See that teeny tiny rectangle next to that pencil tip up there? That’s a pacemaker – the world’s smallest in fact, which has ...

Because of these episodes an external cardiac stimulator was made ready. At 5:23 p.m. there was sudden cardiac arrest, with absent pulse, blood pressure and heart sounds, dilated pupils and cyanosis.