If you get very sick or badly hurt and need help right away, you should use emergency medical services. These services use specially trained people and specially equipped facilities.
You may need care in the hospital emergency room (ER). Doctors and nurses there treat emergencies, such as heart attacks and injuries. For some emergencies, you need help where you are. Emergency medical technicians, or EMTs, do specific rescue jobs. They answer emergency calls, drive ambulances and give basic medical care. Some EMTs are paramedics - they have training to do medical procedures on site. They usually drive you to the ER for more care.
If you or someone you know needs emergency care, go to your hospital's emergency room. If you think the problem is life threatening, call 9-1-1.
To read more about this topic, from this and related documents, please see the MedlinePlus section on Emergency Medical Services.