Good chest compressions during CPR does lead to significant injuries.

A brief accounting of the injuries from CPR from this study show:

  • Multiple rib fractures: 57.3%
  • Sternal fractures: 54.2%
  • Intrathoracic bleeding: 36.1%
  • Cardiac injuries: 7.2%
  • Liver injuries: 3.6%

Luckily none of these injuries were judged to have contributed to the cause of death.