Yes. I was advised by an Army medic that effective CPR will break ribs. Also, you need to blow really hard for the breathing to be effective -- you need to see

Yes. I was advised by an Army medic that effective CPR will break ribs. Also, you need to blow really hard for the breathing to be effective -- you need to see the chest actually move upwards as a result of your blowing. If you've had CPR training, hopefully you had an opportunity to use a real Resusci-Annie (sp?), which has sensors indicating that your doing both the chest compression and the breathing with sufficient force. That same medic also told me that generally the victim will vomit, probably right into your mouth.