What is the immediate priority care for heat stroke after calling 9-1-1?

Immerse the person up to their neck in cold water is the correct response to the immediate priority care for heat stroke after calling 9-1-1. Heat stroke is a severe condition that occurs when the body overheats, often due to prolonged exposure to high temperatures, leading to complications like organ failure or even death. Rapid cooling of the body is essential to lower the core temperature and prevent serious damage.

Immersion in cool water is one of the most effective methods for quickly reducing body temperature. This method allows for direct and efficient heat absorption from the body, promoting faster cooling compared to other methods.

Other options do not provide effective cooling and can hinder recovery. For instance, wrapping the person in blankets could trap heat and exacerbate their condition. Giving them cold drinks is not advisable as they may be unable to safely consume fluids, especially if they are confused or unconscious. Moving them outdoors could expose them to further heat, which is counterproductive.