Medical emergencies are situations that require immediate medical attention to prevent serious harm or death. Common examples include heart attacks, strokes, and severe injuries from accidents. Recognizing the signs of these emergencies, such as chest pain or difficulty breathing, is crucial for timely intervention. In a medical emergency, calling for help quickly is essential. Emergency services, often reached by dialing 911 in the United States, can provide immediate assistance. First aid measures, like performing CPR or controlling bleeding, can also be vital while waiting for professional help to arrive.