What signs indicate someone may be having a heart attack?

The signs indicating someone may be having a heart attack typically include chest pain, shortness of breath, and nausea. Chest pain can manifest as pressure, fullness, or discomfort in the center or left side of the chest, often lasting more than a few minutes or coming and going. Shortness of breath may occur with or without chest discomfort and can happen during rest or physical activity. Nausea can accompany these symptoms, along with other potential indicators such as lightheadedness, cold sweat, or pain radiating to the arms, back, neck, or jaw.

This combination of symptoms is critical for identification as they are frequently reported by individuals experiencing a heart attack, making it essential for bystanders and responders to recognize them for timely intervention. The other options do not represent the common indicators associated with a heart attack, as they pertain to different health issues that are not directly related to cardiac events.