I like the idea, taking "Breakout" and using it to represent the mechanics of the body (the heart passing blood between organs). This is interesting. I like the presentation.
I didn't enjoy playing the game too much though. The heart shape didn't feel conducive to the Breakout formula. (it kept hitting the side)
This may have been because I was using keyboard instead of mouse.
The audio loop also became too repetitive. Perhaps if audio was linked to each organ? So hitting them could switch audio layers on/off?