DRSABCD is a First Aid acronym to remember the steps to revive a non breathing patient. They refer to Danger, Response, Send (for help), Airway, Breathing, CPR, Defibrillation. These resuscitation guidelines are useful for training purposes. It should be noted that during an emergency, should you forget the individual steps in DRSABCD, any actions taken to revive the patient will be better than none. This includes just compressions or even an older guideline.
In all first aid scenarios you should assess the risk to your personal safety before anything. Then check the safety of the casualty and finally anyone else