Tak derzhat' ;)
Well, here's my attempt of interpreting this flash:
The girl was taking care of a very sick guy, who was extremely close to her. She entertained him a little, he felt much better in her company. Then she tied her scarf around him, so his soul can't escape, i guess. She signaled the doctors so they can come in. They arrived, and a rather hostile-looking nurse made a shot to a sick guy, making him fall asleep. He was hallucinating, seeing monsters in doctors, either because of extreme fever or drugs. So i don't think he was actually stabbed in the heart, he just saw it happen.
He woke up in the hospital, recognized the doctors around him, then the girl, and went back to deep-deep sleep.
I might be wrong though.
A very sweet, professionaly made flash.
Delai eshyo ! :p