What should you do immediately after calling 911 in a medical emergency?

In a medical emergency, starting CPR immediately after calling 911 is crucial if the person is unresponsive and not breathing. This action can significantly increase the chances of survival by maintaining blood flow to vital organs, particularly the brain and heart. Commencing CPR as soon as possible ensures that oxygenated blood continues to circulate until professional help arrives, which can be critical in a cardiac arrest scenario.

Once 911 has been called, every second counts, and providing immediate care, such as CPR, can make a life-saving difference. Other actions, like waiting for help, checking vital signs, or monitoring temperature, would not be as effective in maintaining the person's life and health during the critical moments following a medical emergency.