I've just plotted the risk of being dead in the near future vs post admission glucose for coronary patients in this study. Haven't seen the full text so I've no idea whether there was an acute drop in LDL cholesterol in the survival patients, to keep cardiologists happy, but I guess not or they would have mentioned it. In fact, if you had to guess, you could do worse than to guess that an acute drop in LDL would come accompanied by a black cloak and scythe.
Anyway here are data from the abstract in graph form. Enjoy.
Although it is possible the hyperglycaemia is the problem per se, it is equally possible that it simply reflects underlying insulin resistance. But I doubt anyone is going to ask for an IV glucose infusion plus some diazoxide post MI to find out!