I don't know how they administered CPR through the huge implants. They take up her entire chest region! If she was lying down, they would still be sitting on top- instead of falling to the sides. I just finished my CPR re-certification, and you have to use quite a bit of force for each compression- you're supposed to push the chest 1.5-2inches inwards. Even on the plastic CPR dummies (no breast implants!), it's quite a bit of work.