You're trying to resuscitate a casualty who’s not breathing. For how long should you continue compressions if they’ve not started breathing again? You're trying to resuscitate a casualty who’s not breathing. For how long should you continue compressions if they’ve not started breathing again?

• Possible answers:

   
• A. Give up if you think they're dead
• B. Keep trying for up to 2 minutes
• C. Until medical help arrives and takes over
• D. Keep trying for up to 4 minutes