I'm looking now...
No smoking guns on this issue, but here are some interesting links on it...
petechial hemorrhage in coronary arteries/general vicinity of heart (in infants) due to brain injury:
http://aappolicy.aappublications.org/cgi/content/full/pediatrics;107/2/437
Cardiac ph due to causes other than asphyxiation (shock):
http://history.amedd.army.mil/booksdocs/korea/Vol3-BattleCasualties/Chap21.htm
ph as a result of intracerebral hemorrhage:
http://professionals.epilepsy.com/wi/print_section.php?section=cerebrovas_hemorr
Link showing that blood in BBB was due to head trauma, not livor mortis:
http://www.geocities.com/SiliconValley/Haven/9101/wecht.html