Your EMS unit is called to a private residence at 7:00 a.m. for an unknown medical emergency. Dispatch tells you that a woman called screaming about her baby, but the dispatcher couldn’t get any more information. You arrived to find a woman holding a cyanotic three-month-old girl on her front lawn. Through her tears, you understand she found the baby this way when she checked on her in her crib. You and your partner are alone on the scene in a rural area 45 minutes from the closest hospital. Your partner places the mother in the front seat and begins rapid transport while you start CPR in the back. Using the STOP mnemonic, when is it appropriate to discontinue CPR?