Heydrich got top-flight care from mostly German doctors, seemed to be recovering, then went into shock from septicimia (sez there). His injuries from the shrapnel were serious, the previous accounts I’d read had him lying wounded in his open car, but he actually got up and shot at his attackers, and gave chase before he realized he’d been seriously wounded. The boculism hypothesis doesn’t appear to hold water.
http://en.wikipedia.org/wiki/Operation_Anthropoid
Heydrich also was a pilot who flew several missions before Hitler personally told him to stop. To me, of all the Nazi bigwigs, he was the most fascinating and complex, intellectually, he towered over the others, which I am sure earned him a lot of contempt from them.
He’s been portrayed several times in TV and movies, but the one that stuck with me was David Warner’s portrayal in the miniseries “Holocaust.”